{"id":8104,"date":"2026-09-10T09:02:25","date_gmt":"2026-09-10T09:02:25","guid":{"rendered":"https:\/\/korea-transmission.com\/?post_type=product&p=8104"},"modified":"2026-09-16T02:07:03","modified_gmt":"2026-09-16T02:07:03","slug":"l-25a-fertilizer-spreader-gearbox-ratio-11-35-replacement-for-comer-l-25a-gearbox","status":"publish","type":"product","link":"https:\/\/korea-transmission.com\/ms\/product\/l-25a-fertilizer-spreader-gearbox-ratio-11-35-replacement-for-comer-l-25a-gearbox\/","title":{"rendered":"L-25A Fertilizer Spreader Gearbox Ratio 1:1.35 Replacement for Comer L-25A Gearbox"},"content":{"rendered":"

Nisbah Kotak Gear Penyebar Baja L-25A 1:1.35, pengganti langsung untuk Kotak Gear Comer L-25A, merupakan komponen penting dalam jentera pertanian moden. Juga dikenali ramai sebagai kotak gear pengedar baja, unit ini direka bentuk untuk tugas-tugas ketepatan termasuk penyediaan tanah, rawatan tanaman dan penyebaran baja. Terletak di tengah-tengah mesin penyebaran, ia menghantar kuasa dengan cekap daripada Pengambilalihan Kuasa (PTO) traktor ke cakera berputar atau gerimit yang bertanggungjawab untuk mengagihkan baja secara sekata merentasi ladang. Direka bentuk untuk menyampaikan penghantaran kuasa yang konsisten di bawah beban operasi yang berbeza-beza, kotak gear penyebar baja ini mempunyai nisbah peningkatan kelajuan 1:1.35 dengan input maksimum 8.1 kW dan output maksimum 9.9 kW (13.5 HP), menjadikannya sesuai untuk spektrum tugas pertanian yang luas.<\/p>\n

Constructed with a lightweight yet durable aluminium housing and tipping the scales at just 4.1 kg, this agricultural gearbox for fertilizer spreader applications brings together reliability and ease of installation. The internal gear arrangement (reducing stages 3-4) adjusts rotational speed and torque precisely according to spreading requirements, optimising machine performance throughout the season. Compatible with chemical fertiliser spreaders, mowers, and band saws, this fertiliser spreader gearbox is built to endure the harsh chemicals, moisture, and mechanical stress typical of intensive field operations. Supplied without oil, it requires initial fill with SAE 80W-90 (max capacity 0.35 L) before commissioning, with the first oil change due after 50 to 70 operating hours to guarantee long-term reliability. Whether used in large-scale grain farming or specialty horticulture, this unit is a trusted solution from one of the leading fertilizer spreader gearbox manufacturers in Korea.<\/p>\n

\"Kotak<\/p>\n

Parameter Teknikal<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Model<\/strong><\/td>\nKotak Gear L-25A 1:1.35<\/td>\n<\/tr>\n
Gantikan Jenama<\/strong><\/td>\nPenjuru<\/td>\n<\/tr>\n
Butiran produk<\/strong><\/td>\n\n
\u2013 Semua kotak gear dibekalkan tanpa minyak.<\/div>\n
\u2013 Penukaran minyak pertama selepas 50-70 jam operasi, kemudian selepas 500-
\n700 jam operasi atau sekurang-kurangnya sekali setahun.<\/div>\n
\u2013 Hubungi kami untuk mendapatkan kuasa pada RPM yang berbeza.<\/div>\n<\/td>\n<\/tr>\n
Julat aplikasi<\/strong><\/td>\n\n
\u2013 Pelbagai aplikasi (pertanian)<\/div>\n
\u2013 Mesin pemotong rumput<\/div>\n
\u2013 Penyebar baja kimia<\/div>\n
\u2013 Gergaji jalur<\/div>\n<\/td>\n<\/tr>\n
Faktor nisbah<\/strong><\/td>\n1:1.35<\/td>\n<\/tr>\n
Kuasa input maksimum<\/strong><\/td>\n8.1 kW<\/td>\n<\/tr>\n
Kuasa output maksimum<\/strong><\/td>\n9.9 kW<\/td>\n<\/tr>\n
Kuasa output maksimum<\/strong><\/td>\n13.5 HP<\/td>\n<\/tr>\n
Gear arrangement<\/strong>
\nreducing<\/strong><\/td>\n		3-4<\/td>\n<\/tr>\n
Mengandungi minyak<\/strong><\/td>\nTidak<\/td>\n<\/tr>\n
Kapasiti minyak maksimum<\/strong><\/td>\n0.35 liter<\/td>\n<\/tr>\n
Penukaran minyak maksimum<\/strong>
\nselang masa<\/strong><\/td>\n		500 jam<\/td>\n<\/tr>\n
Gred kelikatan SAE minyak<\/strong><\/td>\n80W-90<\/td>\n<\/tr>\n
Bahan perumahan<\/strong><\/td>\nAluminium<\/td>\n<\/tr>\n
Berat<\/strong><\/td>\n4.1 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Kami telah menyelesaikan audit pembekal pihak ketiga dan pengesahan syarikat yang disokong oleh SGS \/ T\u00dcV Rheinland. Pengesahan ini membantu pembeli menyemak identiti syarikat, operasi perniagaan, profil pembekal dan keupayaan pembuatan umum. Laporan pemeriksaan khusus produk, dokumen bahan atau rekod pematuhan boleh disediakan mengikut keperluan pesanan.<\/p>\n

Kuantiti Pesanan Minimum (MOQ):<\/strong> Tetapan fleksibel berdasarkan jenis produk dan jumlah pesanan.<\/p>\n

Sampel:<\/strong> Pelanggan baharu boleh meminta 1\u20135 sampel di bawah keadaan yang sesuai.<\/p>\n

Pesanan Campuran:<\/strong> Menggabungkan model yang berbeza disokong; jumlah pesanan mesti mencapai kira-kira $1,500.<\/p>\n

Pesanan Kecil:<\/strong> Pesanan bermula dari 1\u20132 keping disokong, tetapi harga seunit akan menjadi agak lebih tinggi.<\/p>\n

Masa Pendahuluan:<\/strong> 10\u201325 hari bekerja untuk alat ganti standard; 20\u201345 hari bekerja untuk komponen tersuai; 45\u2013120 hari bekerja untuk peralatan berasaskan projek.<\/p>\n

Syarat Perdagangan:<\/strong> EXW, FOB, CIF dan DAP secara amnya disokong; terma FCA, CFR, CPT, CIP dan DDP boleh dirundingkan secara khusus.<\/p>\n

Dimensi Kotak Gear Penyebar Baja L-25A<\/h2>\n

\"Dimensi\"Dimensi\"Dimensi<\/p>\n

Key Benefits of the L-25A Fertilizer Spreader Gearbox 1:1.35<\/h2>\n

1. Enhanced Precision and Variable Ratio Control
\nNisbah kotak gear penyebar baja 1:1.35 yang direkayasa oleh L-25A menyediakan penukaran kelajuan yang dikalibrasi untuk pengagihan baja yang sekata dan konsisten merentasi setiap laluan. Konfigurasi nisbah berubah-ubah membantu pengendali memperhalusi kadar aplikasi untuk tanaman, jenis tanah dan keadaan lapangan tertentu, sekali gus mengurangkan aplikasi berlebihan dan pembaziran kos input. Pengurusan tork yang tepat bermakna tiada titik panas atau tompok kosong, melindungi hasil dan bajet sepanjang musim tanam.<\/p>\n

2. Exceptional Durability in Harsh Conditions
\nBuilt with a precision die-cast aluminium housing, this fertilizer gearbox delivers outstanding corrosion resistance against aggressive chemical fertilisers, moisture, and field debris. Robust seals and quality bearings protect internal gearing from abrasive wear, while the sealed design prevents contamination ingress during wet-weather field operations. At just 4.1 kg, the lightweight aluminium body reduces machine load without sacrificing structural strength or service life.<\/p>\n

3. Optimised Fuel Efficiency
\nJaringan gear L-25A yang dioptimumkan secara dalaman meminimumkan kehilangan tenaga semasa pemindahan kuasa daripada PTO traktor, sekali gus mengurangkan seretan parasit pada enjin traktor. Dengan input maksimum 8.1 kW dan output 9.9 kW, nisbah penaiktarafan memastikan lebih banyak kuasa enjin sampai ke mekanisme penyebaran. Geseran mekanikal yang lebih rendah bermakna penggunaan bahan api yang berkurangan bagi setiap hektar penyebaran, memberikan penjimatan kos operasi yang boleh diukur sepanjang musim tanaman untuk ladang-ladang pada sebarang skala.<\/p>\n

4. Wide Versatility Across Applications
\nKotak gear untuk mesin penyebar baja ini tidak terhad kepada baja berbutir. Reka bentuknya yang teguh mengendalikan pindaan cecair, pelet dan organik dengan keberkesanan yang sama, dan ia juga dinilai untuk digunakan dalam mesin pemotong rumput dan gergaji jalur, menjadikannya pelaburan berbilang aplikasi. Antara muka input PTO 1\u2033 3\/8 Z6 yang diseragamkan memastikan keserasian traktor yang luas, manakala dimensi aci output sepadan dengan jejak Comer L-25A untuk penggantian OEM yang mudah merentasi pelbagai jenama penyebar.<\/p>\n

5. Reka Bentuk Penyelenggaraan Rendah
\nInternal oil-bath lubrication, combined with a maximum oil change interval of 500 operating hours, dramatically reduces downtime and labour costs. The modular component layout makes access to bearings, seals, and gears straightforward for routine service. A simple SAE 80W-90 fill (max 0.35 L) is all that is required at commissioning. With clearly defined service intervals and readily available fertilizer spreader gearbox parts, operators can plan maintenance around the farming calendar rather than responding to breakdowns.<\/p>\n

6. Keserasian Penggantian Direct Corer L-25A
\nDirekayasa sebagai pengganti tepat untuk Comer L-25A, versi CMN Transmission sepadan dengan semua dimensi pemasangan kritikal, konfigurasi aci (X, Y, Z) dan corak bebibir. Ini bermakna pengubahsuaian mesin sifar diperlukan semasa pemasangan, menghapuskan masa henti yang mahal untuk kejuruteraan semula jentera. Sebagai pembekal penyebar baja yang dipercayai, CMN Transmission menyimpan unit ini sedia untuk dihantar ke seluruh dunia, dengan sokongan teknikal penuh tersedia untuk memastikan penyebar anda kembali ke kerja lapangan yang produktif secepat mungkin.<\/p>\n

\"Kotak<\/p>\n

Working Principle<\/h2>\n

Kotak gear penyebar baja L-25A menerima tenaga putaran terus daripada aci PTO traktor, biasanya beroperasi pada 540 RPM. Melalui set gear serong yang direka bentuk secara dalaman (mengurangkan peringkat 3-4), unit ini menukar kelajuan input ini menggunakan nisbah 1:1.35, meningkatkan kelajuan output untuk menghasilkan RPM cakera atau auger yang konsisten dan lebih tinggi tanpa membebankan saluran pacu. Kuasa input maksimum 8.1 kW diubah dengan cekap kepada output 9.9 kW (13.5 HP), memberikan tork yang diperlukan untuk memacu cakera penyebaran melalui beban granul yang berat, keadaan lembap atau bahan organik yang padat. Proses penukaran adalah lancar dan berterusan, bermakna cakera penyebaran mengekalkan kelajuan putaran yang konsisten tanpa mengira variasi sederhana dalam beban enjin traktor atau kelajuan tanah. Output yang konsisten ini adalah penting untuk mencapai keseragaman.\u00a0kotak gear penyebar baja<\/strong><\/a>\u00a0ratio-dependent spreading widths and application rates required by modern precision agriculture.<\/p>\n

Perumah aluminium tuangan acuan bagi kotak gear pertanian ini ringan dan tegar dari segi struktur, menahan ubah bentuk di bawah beban mekanikal yang biasa berlaku dalam operasi lapangan. Pengedap minyak berkualiti tinggi di sekeliling setiap aci menghalang kemasukan habuk, granul baja, kelembapan dan bahan tumbuhan yang boleh mempercepatkan haus gear dan galas. Sistem pelinciran mandian minyak yang tertutup memastikan semua komponen dalaman, termasuk gear serong, galas dan aci output, kekal dilincirkan secara berterusan walaupun semasa waktu operasi yang panjang. Takungan minyak 0.35 L yang menggunakan minyak gear SAE 80W-90 mengekalkan filem pelincir yang berkesan merentasi semua permukaan sentuhan, meminimumkan haba geseran dan serpihan haus. Aloi aluminium tahan kakisan perumah berfungsi dengan andal apabila terdedah kepada ammonium nitrat, urea, potash dan percikan baja cecair, persekitaran yang akan merosakkan bahan kotak gear yang lebih rendah dengan cepat.<\/p>\n

Although the L-25A operates as a direct-drive unit, it is designed for use within well-specified power limits (max 8.1 kW input) to prevent overload damage. In practice, the upstream PTO driveline incorporating slip clutches or shear bolt protection devices on the connecting PTO shaft interrupts torque if the spreading mechanism encounters a blockage, a large stone, or a sudden jamming event, shielding the fertilizer gearbox internals from catastrophic impact loads. The oil-bath lubrication system doubles as a thermal buffer, absorbing and dissipating heat generated during sustained spreading operations on long field passes. This combination of passive thermal management and upstream mechanical protection means the gearbox can reliably operate through full-day spreading sessions across large agricultural properties without risk of premature failure. Service intervals are straightforward: change oil after the first 50 to 70 hours and thereafter every 500 hours or annually, whichever occurs first, ensuring sustained reliable performance across many seasons of continuous agricultural use.<\/p>\n

\"Aplikasi<\/p>\n

Applications of the L-25A Fertilizer Spreader Gearbox<\/h2>\n
\n

Pengurusan Padang Rumput<\/h3>\n

In livestock operations, even fertiliser coverage across pastures is critical for maintaining consistent forage quality and grass density. The L-25A\u00a0agricultural gearbox for fertilizer spreader\u00a0use drives spreading discs at the right speed to achieve uniform distribution of urea, lime, and blended fertilisers, supporting healthy sward regeneration, improved carrying capacity, and better animal nutrition outcomes across grazing paddocks.<\/p>\n

Dusun dan Ladang Anggur<\/h3>\n

Precision spreading around established fruit tree and vine root zones is critical to avoid fertiliser burn, soil acidification, or root damage from over-application. The L-25A\u00a0agricultural gearbox\u00a0powers inter-row fertiliser spreaders used in high-value permanent crop systems including apples, grapes, citrus, and stone fruits, where accurate placement of granular fertiliser within the root zone directly impacts fruit quality, colour development, and annual yield.<\/p>\n

Pertanian Tanaman<\/h3>\n

Essential for the uniform application of nitrogen, phosphorus, and potassium-based fertilisers across grain crops, vegetables, pulses, and fruit orchards. Precise spreading at the correct\u00a0fertilizer spreader gearbox ratio\u00a0ensures optimal nutrient uptake per hectare, maximising yields and reducing fertiliser input waste. Suitable for both pre-planting broadcast applications and in-season top dressing across all major staple crops.<\/p>\n<\/div>\n

\n

Pengurusan Rumput dan Turf<\/h3>\n

Golf courses, sports stadiums, racecourses, and municipal parks require precision fertiliser delivery to maintain playing surface quality. The L-25A\u00a0fertiliser spreader gearbox\u00a0enables calibrated, low-rate spreading ideal for slow-release granular fertilisers used on fine turf. Its smooth speed output eliminates streaking or uneven application that can cause discolouration or turf inconsistencies on high-profile playing surfaces.<\/p>\n<\/div>\n

\n

Hortikultur dan Nurseri<\/h3>\n

Operasi rumah hijau dan nurseri komersial memerlukan pengagihan baja kawasan kecil yang tepat kepada tanaman pasu dan batas tanaman hiasan. Output kuasa L-25A yang andal menjadikannya berkesan untuk memacu penyebar cakera berskala kecil yang menggunakan baja berbutir pelepasan perlahan, pelet pelepasan terkawal atau bio-stimulan organik dalam kuantiti terkawal kepada tanaman kontena dan batas hortikultur yang dinaikkan tanpa risiko penggunaan berlebihan.<\/p>\n<\/div>\n

\n

Landscaping and Garden Maintenance<\/h3>\n

For small-scale landscaping contractors and garden maintenance teams, the compact 4.1 kg L-25A\u00a0fertilizer gearbox\u00a0is easily integrated into compact tractor-mounted spreading attachments. It enables controlled, low-volume fertiliser delivery to flower beds, ornamental shrubs, and garden borders, where even minor over-application can scorch sensitive plants. Its light weight keeps small spreader machine designs manageable and manoeuvrable in confined residential and commercial garden settings.<\/p>\n<\/div>\n

\n

Soil Amendments and Lime Spreading<\/h3>\n

Beyond conventional fertilisers, this\u00a0fertilizer distributor gearbox is effective for distributing agricultural lime, gypsum, compost granules, and soil conditioners across paddocks requiring pH correction or structure improvement. Consistent disc speed through the L-25A ensures even coverage of these often heavier and denser materials, which require reliable torque delivery to prevent spreading disc stall or uneven throw patterns across different spreading widths.<\/p>\n<\/div>\n

\"Aplikasi<\/p>\n

L-25A Fertiliser Spreader Gearbox Parts<\/h2>\n

1. Gearbox Housing (Aluminium Shell)
\nThe die-cast aluminium housing forms the structural skeleton of the entire fertilizer spreader gearbox assembly. Precision-machined to tight dimensional tolerances, it maintains accurate gear and bearing alignment under load. Its corrosion-resistant alloy composition resists the aggressive chemical environment of fertiliser application, while the lightweight construction (contributing to the total 4.1 kg unit weight) simplifies handling, installation, and machine mounting on a wide range of spreader frames.<\/p>\n

2. Aci Input
\nAci input keluli yang dikeraskan (paksi-X) menerima pemacu PTO dari traktor melalui sambungan splined Z6 1\u2033 3\/8, memindahkan tenaga putaran 540 RPM ke dalam kotak gear sehingga 8.1 kW. Ia digiling dengan ketepatan untuk konsentrisiti dan disokong oleh galas elemen penggelek tertutup pada kedua-dua hujung, memastikan larian minimum dan jangka hayat lesu yang dilanjutkan di bawah beban kilasan kitaran yang tipikal bagi aplikasi alat ganti kotak gear penyebar baja pacuan PTO.<\/p>\n

3. Bevel Gears
\nThe precision-cut bevel gear pair achieves the 1:1.35 speed conversion ratio at the heart of this agricultural gearbox. Manufactured from case-hardened alloy steel with ground tooth profiles, these gears deliver efficient power transmission with minimal noise and heat generation. The bevel arrangement enables a 90-degree axis change between input and output shafts, a configuration essential for connecting horizontal PTO drive to vertically-mounted spinning disc assemblies on fertiliser spreaders.<\/p>\n

4. Aci Keluaran
\nAci output (paksi-Z, silinder berdiameter 1\u2033 3\/8 Z6 atau 25 mm, bergantung pada konfigurasi) menyampaikan kelajuan putaran yang dinaikkan terus ke hab cakera penyebar atau sambungan pemacu perantaraan. Diperbuat daripada keluli tegangan tinggi dengan pengerasan permukaan, aci output dinilai untuk output 9.9 kW penuh pada input 540 RPM. Keserasian pemasangannya sepadan dengan dimensi Comer L-25A asal, membolehkan penggantian pemasangan langsung tanpa pengubahsuaian pada pemasangan pemacu cakera sedia ada.<\/p>\n

5. Galas
\nGalas elemen penggelek tirus atau alur dalam tugas berat menyokong kedua-dua aci input dan output di dalam perumah aluminium. Direka untuk kapasiti beban jejarian dan paksi yang jauh melebihi keadaan operasi yang dinilai L-25A, galas ini memberikan sokongan aci tepat yang diperlukan untuk mengekalkan penjajaran jaringan gear dan mencegah haus gigi pramatang. Dipra-pelincir dan dimeteraikan daripada kelembapan dan pencemaran baja, ia tidak memerlukan penyelenggaraan bebas selain jadual penukaran minyak kotak gear standard.<\/p>\n

6. Pengedap Minyak
\nRadial lip seals fitted at each shaft exit point prevent internal SAE 80W-90 gear oil from leaking out and block the entry of external contaminants including water, fertiliser dust, and abrasive soil particles. The seals are manufactured from oil-resistant elastomer compounds specifically formulated for long-term compatibility with gear lubricants in agricultural conditions. Regular inspection of fertilizer spreader gearbox oil level and seal integrity is recommended during each major service interval to detect early wear.<\/p>\n

7. Oil Fill, Level, and Drain Plugs
\nDedicated plugs on the gearbox housing allow easy oil filling to the 0.35 L capacity mark, level checking, and clean oil drainage during scheduled changes. Correct fertilizer spreader gearbox oil level maintenance is critical to gear and bearing longevity. The plugs are positioned for accessible service without removing the gearbox from the machine, reducing service time. Magnetic drain plugs trap metallic wear particles from the oil, serving as an early warning indicator of internal component wear when inspected at each oil change.<\/p>\n

\"Kotak<\/p>\n

Penyelesaian Masalah Biasa<\/h2>\n

Gearbox Overheating During Operation
\nExcessive heat build-up in the fertilizer gearbox is most commonly caused by insufficient oil level, incorrect oil viscosity, or an oil that has degraded beyond its service life. First, stop the machine and allow the unit to cool. Check the fertilizer spreader gearbox oil level through the level plug and top up to the correct mark with SAE 80W-90 if low. If oil is discoloured (dark brown or black) or contaminated with water, perform an immediate oil change. If overheating persists after correct oil fill, inspect the gear mesh for signs of abnormal wear or a damaged bearing.<\/p>\n

Unusual Noise or Vibration
\nBunyi mengisar, mengklik, atau berdentum dari kotak gear pertanian semasa operasi biasanya menunjukkan haus galas, kerosakan gigi gear, atau ketidaksejajaran aci dengan talian pemacu PTO. Hentikan penyebar dengan segera dan lepaskan PTO. Periksa sambungan aci PTO untuk ketidaksejajaran sudut melebihi sudut operasi yang disyorkan pengeluar. Periksa bolt pelekap kotak gear untuk kelonggaran. Tanggalkan penutup pemeriksaan dan periksa gear untuk gigi yang sumbing atau berlubang. Jika kerosakan dalaman disahkan, penggantian galas atau gear yang terjejas daripada katalog bahagian kotak gear penyebar baja disyorkan sebelum menyambung semula kerja.<\/p>\n

Oil Leakage Around Shaft Seals
\nOil seeping from around the input or output shaft exit points indicates a worn or damaged radial lip seal. This is a common wear item on any fertiliser spreader gearbox operating in dusty or chemically harsh environments. Replace the relevant shaft seal using a seal driver tool appropriate to the shaft diameter. Clean all mating surfaces before fitting the new seal to ensure a proper seat. Overfilling the gearbox beyond the 0.35 L maximum capacity can also cause pressure build-up that pushes oil past otherwise healthy seals, so always verify correct fill volume after topping up.<\/p>\n

Spreader Disc Speed Inconsistency
\nIf the spreading discs are running at variable or reduced speed compared to normal operation, the first check should be tractor PTO shaft engagement and the condition of the connecting PTO driveshaft universal joints, which can seize or wear if lubrication is neglected. Internally, check that the fertilizer spreader gearbox ratio is producing the expected output speed by measuring output shaft RPM with a tachometer. Low output speed at correct PTO input speed may indicate worn bevel gear teeth, which require gear set replacement to restore normal performance.<\/p>\n

Difficult or Stiff PTO Shaft Engagement
\nRintangan semasa menyambungkan aci PTO kepada input L-25A boleh menunjukkan pembentukan kakisan pada aci input splined 1\u2033 3\/8 Z6, bahan asing yang tersangkut pada spline, atau yoke gandingan PTO yang cacat. Bersihkan spline aci input dengan teliti menggunakan berus dawai dan sapukan lapisan nipis gris anti-seize atau perencat kakisan untuk mengelakkan seizure pada masa hadapan. Periksa lubang yoke aci PTO untuk haus atau ubah bentuk yang mungkin terhasil daripada penglibatan berulang pada sudut penjajaran yang salah, yang juga boleh mempercepatkan haus galas aci input dari semasa ke semasa.<\/p>\n

Mounting Looseness or Vibration at Spreader Frame
\nPhysical looseness of the gearbox on its mounting frame leads to driveline vibration, accelerated bearing wear, and eventual gear misalignment. Inspect all four mounting flange bolts (M10 or equivalent to match the 11 mm hole pattern) for correct torque specification. Thread-locking compound applied to mounting bolts is advisable in high-vibration applications. If the mounting flange face shows signs of fretting corrosion or surface damage from prolonged loose mounting, clean and treat the contact surfaces before re-torquing to prevent recurrence of the looseness issue.<\/p>\n

Premature Gear or Bearing Failure
\nKegagalan gear atau bearing awal dalam kotak gear penyebar baja yang belum mencapai jangka hayat perkhidmatan yang dijangkakan hampir selalu boleh dikesan kepada salah satu daripada tiga punca utama: beroperasi pada kuasa input melebihi penarafan maksimum 8.1 kW, beroperasi dengan minyak yang tidak mencukupi atau terdegradasi, atau operasi berterusan dengan ketidaksejajaran aci PTO di luar sudut yang boleh diterima. Semak keadaan operasi mesin terhadap spesifikasi yang dinilai. Sahkan bahawa minyak telah ditukar pada selang awal 50 hingga 70 jam yang ditetapkan dan minyak gred kelikatan SAE 80W-90 sedang digunakan, bukan minyak automotif yang lebih ringan yang kekurangan kekuatan filem pembawa beban yang diperlukan untuk pelinciran gear.<\/p>\n

Fertiliser Contamination of Gearbox Oil
\nWater-mixed fertiliser solutions or hygroscopic granular materials can draw moisture into the gearbox if seals are compromised, leading to oil emulsification and loss of lubricating film strength. Milky or grey-coloured oil at the drain is a clear indicator of water contamination. Drain and flush the gearbox, replace the contaminated oil with fresh SAE 80W-90, and identify the moisture ingress point, typically a worn shaft seal or a cracked housing. Timely attention prevents corrosive damage to polished gear tooth surfaces and bearing raceways.<\/p>\n

\"Kotak<\/p>\n

Correct Maintenance of the L-25A Fertilizer Spreader Gearbox<\/h2>\n
\n

Step 1: Initial Oil Fill Before First Use<\/h3>\n

The L-25A\u00a0fertilizer spreader gearbox\u00a0is supplied dry, without oil. Before the first operation, fill through the top fill plug with the correct SAE 80W-90 gear oil to the level plug mark (maximum 0.35 L). Use only the specified viscosity grade to ensure the oil film is adequate for the gear mesh contact pressures at 540 RPM input. Using incorrect oil viscosity is the leading cause of premature gear tooth surface fatigue in agricultural gearbox applications.<\/p>\n<\/div>\n

\n

Step 2: First Oil Change at 50 to 70 Hours<\/h3>\n

After the initial 50 to 70 operating hours, perform the first oil change. During break-in, small metallic wear particles from the bedding-in of gear tooth surfaces accumulate in the oil. Draining and replacing the oil at this interval removes these particles before they can act as abrasive cutting agents, significantly extending internal component life. Warm the gearbox slightly before draining to improve oil flow and particle suspension. Refill to the level plug mark with fresh SAE 80W-90.<\/p>\n<\/div>\n

\n

Step 3: Regular Oil Changes Every 500 Hours or Annually<\/h3>\n

After the initial change, replace the SAE 80W-90 gear oil every 500 operating hours or at least once per year, whichever comes first. This ensures lubricant additive packages for corrosion protection and extreme-pressure resistance remain effective. At each oil change, inspect the drained oil colour and clarity. Dark brown or grey oil indicates oxidation or water contamination, requiring investigation of seal integrity before the next spreading season. The 500-hour interval aligns conveniently with annual seasonal service schedules for most farming operations.<\/p>\n<\/div>\n

\n

Step 4: Inspect and Clean External Housing<\/h3>\n

After each spreading session, clean fertiliser residue, chemical deposits, and mud from the external surfaces of the aluminium housing. Concentrated fertiliser salts, particularly ammonium nitrate or urea-based products, are corrosive to aluminium if allowed to dry on the surface over extended periods. A low-pressure water rinse followed by drying is sufficient for routine cleaning. Inspect mounting bolts, shaft seal areas, and the housing surface for cracks, corrosion pitting, or mechanical damage that could compromise structural integrity or oil containment during the next operation.<\/p>\n<\/div>\n

\n

Step 5: Check Shaft Seal Condition<\/h3>\n

Inspect input and output shaft lip seals for oil weeping, cracking, or hardening at each seasonal service. A thin film of oil on the outside of the shaft near the seal exit point is an early warning sign that seal replacement is needed within the next operating period. Replace seals proactively at the first sign of degradation, as a failed seal allows both oil loss and contaminant ingress. When replacing seals, always use a proper seal driver sized to the specific shaft diameter to avoid cocking or distorting the new seal lip during installation.<\/p>\n<\/div>\n

\n

Step 6: Lubricate PTO Shaft and Check Alignment<\/h3>\n

Aci pemacu PTO penyambung, sambungan universalnya, dan klac gelincir (jika dipasang) memerlukan jadual pelinciran mereka sendiri yang bebas daripada kotak gear. Griskan semua puting sambungan universal dengan gris EP berasaskan litium pada selang masa yang ditentukan oleh pengeluar aci PTO. Pastikan juga sudut operasi aci PTO tidak melebihi sudut maksimum yang dinilai pengeluar sambungan-U di bawah keadaan kerja, kerana sudut yang berlebihan memendekkan hayat sambungan secara mendadak dan memperkenalkan impuls getaran yang menekan galas aci input kotak gear baja dan pelekap perumah.<\/p>\n<\/div>\n

\"Kotak<\/p>\n

Kotak Gear Penyebar Baja dan Aci Pemacu PTO<\/h2>\n

Kotak gear penyebar baja merupakan antara muka mekanikal kritikal antara Power Take-Off traktor dan mekanisme penyebaran mesin pengagihan baja. Ia menerima kuasa putaran mentah daripada PTO traktor, yang biasanya beroperasi pada kelajuan aci 540 RPM piawai, dan menukarkannya kepada output kelajuan dan tork yang paling sesuai untuk memacu pemasangan cakera penyebaran. Dalam kes L-25A, nisbah 1:1.35 meningkatkan kelajuan input sedikit untuk memberikan putaran cakera yang lebih pantas yang meningkatkan jarak lontaran granul dan lebar corak penyebaran, sambil mengekalkan tahap tork yang boleh digerakkan. Kotak gear juga melaksanakan fungsi geometri kritikal, mengubah sudut penghantaran kuasa daripada paksi aci PTO mendatar kepada paksi pemacu cakera menegak atau bersudut menggunakan set gear serong dalamannya, fungsi yang sebaliknya memerlukan susunan penghantaran rantai atau tali sawat yang kompleks dan tidak boleh dipercayai. Kotak gear penyebar baja daripada pengeluar terkemuka seperti CMN Transmission direka bentuk untuk melaksanakan penghalaan kuasa ini dengan andal selama beribu-ribu jam operasi di bawah keadaan aplikasi baja pertanian yang mencabar dan bermusuhan secara kimia.<\/p>\n

Aci PTO ialah aci pemacu mekanikal yang menghubungkan stub output PTO berputar traktor secara fizikal kepada aci input kotak gear pengedar baja. Kebanyakan aci PTO moden yang digunakan dengan peralatan penyebaran baja ialah pemasangan teleskopik yang menggabungkan dua atau lebih sambungan universal (sambungan-U) yang menampung perubahan sudut dan panjang yang berlaku apabila penyebar bergerak di atas tanah yang tidak rata atau membelok di ladang. Kotak gear L-25A menerima sambungan aci PTO 1\u2033 3\/8 Z6 (enam-spline) standard, yang merupakan antara muka PTO traktor piawai yang paling biasa dalam kategori 540 RPM di seluruh dunia, memastikan keserasian yang luas merentasi jenama dan model traktor dari semua wilayah pertanian utama.<\/p>\n

Semasa beroperasi, pengendali traktor menggunakan tuil PTO, yang menghubungkan transmisi traktor ke aci output PTO pada kelajuan tertentu (540 atau 1000 RPM). Stub PTO yang berputar memacu aci pemacu PTO yang disambungkan, yang menghantar putaran ini melalui sambungan universalnya ke aci input kotak gear pertanian L-25A. Kotak gear menerima putaran ini sehingga 8.1 kW, menukarkannya melalui set gear serong 1:1.35, dan menghantar kelajuan yang dinaikkan dan output tork ke cakera penyebar atau aci gerimit. Cakera kemudian berputar pada kelajuan output yang lebih tinggi dan melemparkan baja berbutir, kapur, atau benih ke luar dalam corak penyebaran terkawal yang ditentukan oleh bentuk cakera, konfigurasi bilah, dan kelajuan keluar. Seluruh sistem beroperasi sebagai rangkaian kuasa mekanikal berterusan, dengan kecekapan setiap pautan, penglibatan PTO traktor, aci pemacu PTO, dan kotak gear, secara langsung mempengaruhi konsistensi dan kualiti corak penyebaran yang dicapai di seluruh lapangan.<\/p>\n

Selecting the right PTO shaft to pair with the L-25A fertilizer spreader gearbox for sale is as important as the gearbox selection itself. The PTO shaft must be rated for at least the maximum power transmitted (8.1 kW at 540 RPM), with an appropriate safety factor for shock loads at PTO engagement. Length must be checked against the tractor-to-spreader distance at both minimum and maximum hitch extension, to ensure the shaft never bottoms out its telescopic tube or over-extends and separates. PTO shafts should incorporate a slip clutch or shear bolt protection device between the shaft and the gearbox input to interrupt torque if the spreading mechanism jams, protecting both the gearbox internals and the tractor PTO clutch from overload damage.<\/p>\n\n\n\n
\"Kotak<\/td>\n\"Aci<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mengapa Memilih Kotak Gear Penyebar Baja CMN Transmission?<\/h2>\n

Korea CMN Transmission Co., Ltd. was established in 2000 and is headquartered in Sandan-o, Danwon-gu, Ansan-si, Gyeonggi-do, Korea. Over more than two decades, CMN Transmission has grown from a focused agricultural gearbox manufacturer into one of the most trusted names among global fertilizer spreader gearbox manufacturers. With more than 100 factory employees dedicated to R&D, precision manufacturing, technical sales, and global after-sale service, the company has consistently delivered agricultural gearboxes that meet and exceed the demands of modern precision farming operations worldwide.<\/p>\n

CMN Transmission exports to more than 60 countries across six continents, with active distribution channels in the United States, Canada, Mexico, Brazil, Argentina, France, Germany, Italy, Spain, the United Kingdom, Russia, China, India, Thailand, Vietnam, Turkey, Australia, New Zealand, and many more. This global reach is supported by a comprehensive product range spanning rotary cutter gearboxes, rotary tiller gearboxes, feed mixer gearboxes, rotary mower gearboxes, fertilizer spreader gearboxes, flail mower gearboxes, post hole digger gearboxes, round baler gearboxes, square baler gearboxes, disc mower gearboxes, centre pivot irrigation gearboxes, hydraulic drive gearboxes, silage machine gearboxes, orchard sprayer gearboxes, rotary rake gearboxes, combine harvester gearboxes, grain storage gearboxes, grain transportation gearboxes, corn header gearboxes, cutting bar gearboxes, poultry feeding gearboxes, and custom agricultural gearboxes covering nearly 1,000 specifications. This breadth makes CMN Transmission a one-stop source for fertilizer spreader suppliers and OEM machinery builders globally.<\/p>\n

Annual production exceeds 500,000 units, supplying both global OEM agricultural machinery manufacturers and distribution networks with the consistent quality and long-term durability they depend on for customer satisfaction. CMN Transmission holds CE, ISO 9001, Environmental Management, and Occupational Health and Safety management system certifications, ensuring every agricultural gearbox for fertilizer spreader and other agricultural applications that leaves the factory conforms to internationally recognised engineering and quality standards.<\/p>\n

Choosing CMN Transmission for your fertilizer spreader gearbox for sale requirements means partnering with a manufacturer that invests continuously in product R&D, maintains strict incoming material and outgoing product inspection protocols, and provides dedicated technical application support for customers worldwide. Whether you are sourcing a single replacement L-25A gearbox or building a large-scale OEM supply relationship for thousands of units per year, CMN Transmission has the manufacturing scale, quality systems, and global logistics capability to support your business reliably season after season.<\/p>\n

\"Pengilang<\/p>\n

Soalan Lazim<\/h2>\n

Q1: Is the CMN L-25A a direct replacement for the Comer L-25A gearbox?<\/strong>
\nA: Yes. The CMN Transmission L-25A fertilizer spreader gearbox is engineered as a direct OEM-equivalent replacement for the Comer L-25A unit. All critical dimensions including the mounting flange bolt hole pattern (N.4 x diameter 11 mm), shaft diameters, and shaft lengths are matched to the original Comer specification. No machine frame modification, adaptor plates, or shaft machining is required for a standard direct swap installation.<\/p>\n

Q2: What oil should I use in the L-25A fertilizer spreader gearbox?<\/strong>
\nA: The L-25A requires SAE 80W-90 gear oil with a maximum fill capacity of 0.35 litres. Use a mineral or synthetic EP (Extreme Pressure) gear oil meeting GL-4 or GL-5 specifications. Do not use engine oil, hydraulic oil, or grease as a substitute. Using the correct viscosity grade is critical for maintaining the protective lubricant film between bevel gear tooth surfaces at 540 RPM input speed. If operating in extreme low-temperature environments, consult CMN Transmission for alternative viscosity recommendations.<\/p>\n

Q3: What is the correct fertilizer spreader gearbox oil level check procedure?<\/strong>
\nA: To check the fertilizer spreader gearbox oil level, ensure the machine is parked on level ground and the gearbox has cooled from operating temperature. Remove the oil level plug (located on the side of the housing) and check that oil is present up to the bottom of the level plug hole thread. If oil does not reach the level plug, add SAE 80W-90 through the top fill plug until oil begins to weep from the level plug hole, then refit both plugs securely. Never overfill beyond the level plug as excess oil creates internal pressure that can blow out shaft seals.<\/p>\n

Q4: What fertilizer spreader gearbox ratio does the L-25A have, and what does it mean for spreading?<\/strong>
\nA: The L-25A has a 1:1.35 fertilizer spreader gearbox ratio. This is a speed-increasing ratio, meaning for every one revolution of the input shaft, the output shaft turns 1.35 times. At standard 540 RPM PTO input, the output shaft turns at approximately 729 RPM. This faster output speed drives spreading discs at a higher rotational velocity, increasing the centrifugal throw force on the fertiliser particles and achieving greater spreading width compared to a 1:1 direct drive gearbox, without requiring a higher tractor PTO speed.<\/p>\n

Q5: Can the L-25A handle liquid fertilizers as well as granular products?<\/strong>
\nA: The L-25A agricultural gearbox is designed to drive the mechanical spreading mechanism, not to contact the fertiliser product directly. Its aluminium housing and sealed shaft design resist external exposure to fertiliser splatter from both granular and liquid product applications. For liquid fertiliser spreading systems using disc or boom spreaders, the gearbox performs the same power transmission function as in granular spreading. Ensure the external housing and seals are rinsed after liquid fertiliser sessions to prevent extended chemical contact with the housing surfaces.<\/p>\n

Q6: How long does the L-25A fertilizer spreader gearbox last under normal farm use?<\/strong>
\nA: Under normal agricultural operating conditions with the prescribed oil changes (initial at 50 to 70 hours, then every 500 hours or annually), the L-25A fertilizer distributor gearbox is designed for a service life of several thousand operating hours. Actual longevity depends on operating within rated power limits, maintaining correct PTO shaft alignment, using the specified SAE 80W-90 oil, and adhering to the maintenance schedule. Operators who follow the recommended service routine consistently report gearboxes running well beyond 1,000 hours before requiring internal component attention.<\/p>\n

Q7: What shaft configurations are available for the L-25A?<\/strong>
\nA: Keluarga L-25A, seperti yang diperincikan dalam katalog Comer dan dipadankan oleh CMN Transmission, tersedia dalam pelbagai konfigurasi aci. Aci input (X) menerima sambungan PTO enam-spline Z6 1\u2033 3\/8 atau aci silinder 25 mm bergantung pada konfigurasi. Aci output (kedudukan Y dan Z) tersedia dalam format silinder 1\u2033 3\/8 Z6, 22 mm, atau 25 mm pada pelbagai panjang, membolehkan penyesuaian kepada antara muka hab cakera penyebar yang berbeza. Hubungi CMN Transmission untuk mengesahkan konfigurasi aci tepat yang diperlukan untuk model penyebar khusus anda sebelum membuat pesanan.<\/p>\n

Q8: Is a PTO shaft included with the L-25A gearbox purchase?<\/strong>
\nA: No, the L-25A fertilizer gearbox is supplied as a standalone unit without a PTO driveshaft. The connecting PTO shaft must be selected separately based on the tractor-to-machine distance and power requirements. CMN Transmission can advise on compatible PTO shaft specifications on request. When selecting a PTO shaft for use with the L-25A, ensure it is rated for at least the maximum 8.1 kW input power and incorporates a slip clutch or shear bolt overload protection device for safe operation.<\/p>\n

Q9: Where can I buy the L-25A fertilizer spreader gearbox and what is the lead time?<\/strong>
\nA: The L-25A fertilizer spreader gearbox for sale is available to order directly from CMN Transmission through this product page, or via our authorised distributor network in the United States, Canada, Europe, Australia, and other major agricultural markets. Standard lead time for in-stock units is 1 to 3 business days for domestic orders, with international shipping times varying by destination. Contact our sales team for express shipping options or bulk order pricing for dealer and OEM customers.<\/p>\n

Q10: What certifications does CMN Transmission hold for the L-25A gearbox?<\/strong>
\nA: CMN Transmission holds CE marking (confirming conformity with European safety standards), ISO 9001 quality management system certification, Environmental Management certification, and Occupational Health and Safety certification. These accreditations demonstrate that the L-25A fertiliser spreader gearbox is manufactured under a verified and audited quality management system, providing customers with confidence in product consistency, dimensional accuracy, and material traceability across all production batches.<\/p>\n

\"Kotak<\/p>\n

Ulasan Pelanggan<\/h2>\n

James, Corn and Soybeans, United States<\/strong>
\n\u201cKami menjalankan operasi tanaman campuran di Iowa dan kotak Comer asal kami rosak sejurus pada permulaan musim penyebaran musim bunga. CMN Transmission mempunyai L-25A dalam stok dan ia dihantar dalam masa 48 jam. Terus dihantar tanpa memerlukan sebarang pengubahsuaian. Telah menggunakannya selama dua musim sekarang dan ia mengendalikan urea dan MAP tanpa sebarang masalah langsung. Kualiti binaan terasa kukuh berbanding apa yang kami ada sebelum ini. Sangat gembira dengan pembelian ini.\u201d<\/p>\n

Michael, Crop Farming, Canada<\/strong>
\n\u201cSaya memesan dua unit kotak gear L-25A untuk persediaan penyebar kami di ladang di Saskatchewan. Nisbah 1:1.35 adalah apa yang diperlukan oleh penyebar kami. Penghantaran tiba di Calgary dalam masa kira-kira 12 hari yang sebenarnya lebih cepat daripada yang saya jangkakan. Satu perkara yang saya sangat hargai ialah pasukan sokongan teknikal yang menjawab soalan saya tentang pengisian minyak sebelum pentauliahan. Tiada masalah setakat ini selepas satu musim bunga penuh dan satu musim luruh. Tidak akan membuat pesanan lagi.\u201d<\/p>\n

Carlos, Soybean and Cotton, Brazil<\/strong>
\n\u201cKami bekerjasama dengan penyebar baja di ladang kami di Mato Grosso dan memerlukan pengganti yang andal untuk Comer L-25A kami. Transmisi CMN dihantar dengan cepat dan produknya sesuai dengan sempurna. Kami telah menggunakannya selama kira-kira 300 jam untuk mengedarkan urea dan kalium tanpa sebarang kebocoran atau terlalu panas. Berat ringan 4.1 kg menjadikan penyelenggaraan di ladang lebih mudah. \u200b\u200bSaya hanya menolak satu bintang kerana masa penghantaran yang dijanjikan sedikit tertangguh. Secara keseluruhan, produknya hebat.\u201d<\/p>\n

Luis, Wheat and Soybeans, Argentina<\/strong>
\n\u201cKami telah menggunakan kotak gear ini pada penyebar baja kami di Cordoba selama tiga kitaran pertanian yang lalu. Nisbah 1:1.35 memberikan kami lebar aplikasi yang tepat yang kami cari dengan gandum dan kacang soya. Perumah aluminium tahan lama walaupun dengan baja cecair campuran. Kali pertama kami menggunakannya, kami menukar minyak pada 60 jam seperti yang ditunjukkan oleh arahan dan sejak itu gear berfungsi dengan sempurna. Produk yang sangat bagus, kami mengesyorkannya.\u201d<\/p>\n

David, Crop Farming, United Kingdom<\/strong>
\n\u201cKami menjalankan operasi penyebaran kontrak di North Yorkshire dan memerlukan kotak gear gantian yang andal pada pertengahan musim. CMN Transmission menghantar L-25A dalam masa 24 jam dan ia tiba pada keesokan paginya. Memasangnya pada treler penyebar pada hari yang sama dan kami kembali ke lapangan menjelang petang. Kualiti perumah aluminium dan gear dalaman kelihatan sebaik mana-mana unit OEM yang pernah saya gunakan. Lima bulan kemudian dan tiada masalah langsung. Nilai yang baik, perkhidmatan yang cemerlang dan produk yang sangat baik untuk harga tersebut.\u201d<\/p>\n

Pierre, Pertanian Tanaman, Perancis<\/strong>
\n\u201cKami telah menggunakan kotak gear ini pada penyebar baja kami di Beauce selama dua musim sekarang. Nisbah 1:1.35 sangat sesuai untuk penyebar baja kami. Kualiti pembuatannya sangat baik dan sarung aluminium dilindungi dengan baik daripada baja yang menghakis. Kami memesan tiga unit secara keseluruhan dan semuanya berfungsi tanpa sebarang masalah. Sokongan teknikal di CMN Transmission sangat responsif; mereka menjawab semua soalan kami dengan cepat. Produk yang sangat bagus.\u201d<\/p>\n

Klaus, Agricultural Equipment, Germany<\/strong>
\n\u201cSebagai pengedar alat ganti peralatan pertanian di Bayern, saya telah mendapatkan kotak gear L-25A ini daripada CMN Transmission untuk beberapa pelanggan kami. Ketepatan pemasangan berbanding unit Comer asal adalah tepat, pelanggan kami semua melaporkan pemasangan yang bebas masalah. Kualiti yang konsisten merentasi kelompok yang kami terima dan harga yang kompetitif telah menjadikan ini cadangan utama kami untuk penggantian Comer L-25A. Dokumentasi CMN Transmission juga disediakan dengan baik, yang membantu pelanggan kami dengan perkhidmatan kali pertama.\u201d<\/p>\n

Andrew, Agricultural Equipment, Australia<\/strong>
\n\u201cKami membekal dan menyelenggara jentera penyebaran baja di Victoria dan New South Wales dan CMN Transmission kini menjadi sumber pilihan kami untuk kotak gear gantian L-25A. Kualiti unit adalah konsisten, penghantaran ke Australia adalah berpatutan, dan kotak gear mengendalikan keadaan di sini dengan baik, termasuk haba dan campuran baja kasar yang digunakan untuk penyebaran tanah yang luas. Seorang pelanggan telah menjalankan L-25A mereka selama lebih 800 jam sebelum servis berjadual dan bahagian dalam kotak gear kelihatan sangat baik semasa pemeriksaan. Sangat kagum dengan ketahanannya.\u201d<\/p>\n

Roberto, Agricultural Machinery, Mexico<\/strong>
\n\u201cKami merupakan sebuah syarikat perkhidmatan jentera pertanian di tengah Mexico dan kami telah memasang beberapa kotak gear ini pada penyebar baja pelanggan kami. Nisbah transmisi 1:1.35 berfungsi dengan baik dengan cakera peralatan Eropah yang kami ada di kawasan kami. Kualitinya bagus dan harganya sangat kompetitif berbanding alat ganti asal. Kami menolak satu bintang kerana kadangkala masa penghantaran antarabangsa agak lama, tetapi produk itu sendiri sangat baik.\u201d<\/p>","protected":false},"excerpt":{"rendered":"

The L-25A Fertilizer Spreader Gearbox Ratio 1:1.35, a direct replacement for the Comer L-25A Gearbox, is an indispensable component of modern agricultural machinery. Also widely known as a fertilizer distributor gearbox, this unit is engineered for precision tasks including soil preparation, crop treatment, and fertilizer spreading. Positioned at the centre of the spreading machine, it efficiently transmits power from the tractor\u2019s Power Take-Off (PTO) to the spinning discs or augers responsible for evenly distributing fertilizer across fields.<\/p>","protected":false},"featured_media":8004,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"The L-25A Fertilizer Spreader Gearbox Ratio 1:1.35, a direct replacement for the Comer L-25A Gearbox, is an indispensable component of modern agricultural machinery. Also widely known as a fertilizer distributor gearbox, this unit is engineered for precision tasks including soil preparation, crop treatment, and fertilizer spreading. Positioned at the centre of the spreading machine, it efficiently transmits power from the tractor's Power Take-Off (PTO) to the spinning discs or augers responsible for evenly distributing fertilizer across fields. Designed to deliver consistent power transmission under varying operational loads, this fertilizer spreader gearbox features a 1:1.35 speed-increasing ratio with a maximum input of 8.1 kW and a maximum output of 9.9 kW (13.5 HP), making it suitable for a broad spectrum of agricultural tasks.\r\n\r\nConstructed with a lightweight yet durable aluminium housing and tipping the scales at just 4.1 kg, this agricultural gearbox for fertilizer spreader applications brings together reliability and ease of installation. The internal gear arrangement (reducing stages 3-4) adjusts rotational speed and torque precisely according to spreading requirements, optimising machine performance throughout the season. Compatible with chemical fertiliser spreaders, mowers, and band saws, this fertiliser spreader gearbox is built to endure the harsh chemicals, moisture, and mechanical stress typical of intensive field operations. Supplied without oil, it requires initial fill with SAE 80W-90 (max capacity 0.35 L) before commissioning, with the first oil change due after 50 to 70 operating hours to guarantee long-term reliability. Whether used in large-scale grain farming or specialty horticulture, this unit is a trusted solution from one of the leading fertilizer spreader gearbox manufacturers in Korea.\r\n\r\n\"L-25A\r\n

Product Specifications<\/h2>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Model<\/strong><\/td>\r\nL-25A Gearbox 1:1.35<\/td>\r\n<\/tr>\r\n
Replace Brand<\/strong><\/td>\r\nComer<\/td>\r\n<\/tr>\r\n
Product details<\/strong><\/td>\r\n\r\n
- All gearboxes are supplied without oil.<\/div>\r\n
- First oil change after 50-70 operating hours, then after 500-\r\n700 operating hours or at least once a year.<\/div>\r\n
- Contact us for power at a different RPM.<\/div><\/td>\r\n<\/tr>\r\n
Application range<\/strong><\/td>\r\n\r\n
- Various (agricultural) applications<\/div>\r\n
- Mowers<\/div>\r\n
- Chemical fertiliser spreaders<\/div>\r\n
- Band saws<\/div><\/td>\r\n<\/tr>\r\n
Ratio factor<\/strong><\/td>\r\n1:1.35<\/td>\r\n<\/tr>\r\n
Max. input power<\/strong><\/td>\r\n8.1 kW<\/td>\r\n<\/tr>\r\n
Max. output power<\/strong><\/td>\r\n9.9 kW<\/td>\r\n<\/tr>\r\n
Max. output power<\/strong><\/td>\r\n13.5 HP<\/td>\r\n<\/tr>\r\n
Gear arrangement<\/strong>\r\nreducing<\/strong><\/td>\r\n3-4<\/td>\r\n<\/tr>\r\n
Contains oil<\/strong><\/td>\r\nNo<\/td>\r\n<\/tr>\r\n
Max. oil capacity<\/strong><\/td>\r\n0.35 l<\/td>\r\n<\/tr>\r\n
Max. oil change<\/strong>\r\ninterval<\/strong><\/td>\r\n500 h<\/td>\r\n<\/tr>\r\n
Oil SAE viscosity grade<\/strong><\/td>\r\n80W-90<\/td>\r\n<\/tr>\r\n
Housing material<\/strong><\/td>\r\nAluminium<\/td>\r\n<\/tr>\r\n
Weight<\/strong><\/td>\r\n4.1 kg<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n

L-25A Fertilizer Spreader Gearbox Dimensions<\/h2>\r\n\"L-25A \"L-25A \"L-25A\r\n

Key Benefits of the L-25A Fertilizer Spreader Gearbox 1:1.35<\/h2>\r\n1. Enhanced Precision and Variable Ratio Control\r\nThe L-25A's engineered 1:1.35 fertilizer spreader gearbox ratio provides calibrated speed conversion for even, consistent fertilizer distribution across every pass. Variable-ratio configurations help operators fine-tune application rates to specific crops, soil types, and field conditions, reducing over-application and input cost waste. Precise torque management means no hot spots or bare patches, protecting both yield and budget throughout the growing season.\r\n\r\n2. Exceptional Durability in Harsh Conditions\r\nBuilt with a precision die-cast aluminium housing, this fertilizer gearbox delivers outstanding corrosion resistance against aggressive chemical fertilisers, moisture, and field debris. Robust seals and quality bearings protect internal gearing from abrasive wear, while the sealed design prevents contamination ingress during wet-weather field operations. At just 4.1 kg, the lightweight aluminium body reduces machine load without sacrificing structural strength or service life.\r\n\r\n3. Optimised Fuel Efficiency\r\nThe L-25A's internally optimised gear mesh minimises energy loss during power transfer from the tractor PTO, reducing parasitic drag on the tractor engine. With a maximum input of 8.1 kW and an output of 9.9 kW, the step-up ratio ensures more of the engine's power reaches the spreading mechanism. Lower mechanical friction means reduced fuel consumption per hectare spread, delivering measurable operating cost savings over an entire cropping season for farms of any scale.\r\n\r\n4. Wide Versatility Across Applications\r\nThis gearbox for fertilizer spreader machines is not limited to granular fertilisers. Its robust design handles liquid, pelletised, and organic amendments with equal effectiveness, and it is also rated for use in mowers and band saws, making it a multi-application investment. The standardised 1\" 3\/8 Z6 PTO input interface ensures broad tractor compatibility, while the output shaft dimensions match the Comer L-25A footprint for straightforward OEM replacement across multiple spreader brands.\r\n\r\n5. Low Maintenance Design\r\nInternal oil-bath lubrication, combined with a maximum oil change interval of 500 operating hours, dramatically reduces downtime and labour costs. The modular component layout makes access to bearings, seals, and gears straightforward for routine service. A simple SAE 80W-90 fill (max 0.35 L) is all that is required at commissioning. With clearly defined service intervals and readily available fertilizer spreader gearbox parts, operators can plan maintenance around the farming calendar rather than responding to breakdowns.\r\n\r\n6. Direct Comer L-25A Replacement Compatibility\r\nEngineered as a precision drop-in replacement for the Comer L-25A, CMN Transmission's version matches all critical mounting dimensions, shaft configurations (X, Y, Z), and flange patterns. This means zero machine modification is required during installation, eliminating costly downtime for machinery re-engineering. As trusted fertilizer spreader suppliers, CMN Transmission stocks this unit ready to ship globally, with full technical support available to ensure your spreader returns to productive field work as quickly as possible.\r\n\r\n\"L-25A\r\n

Working Principle<\/h2>\r\nThe L-25A fertilizer spreader gearbox receives rotational energy directly from the tractor's PTO shaft, typically operating at 540 RPM. Through its internally engineered bevel gear set (reducing stages 3-4), the unit converts this input speed using a 1:1.35 ratio, stepping up the output speed to deliver consistent, higher disc or auger RPM without overloading the driveline. The maximum input power of 8.1 kW is efficiently transformed to 9.9 kW output (13.5 HP), providing the torque necessary to drive spreading discs through heavy granule loads, damp conditions, or dense organic material. The conversion process is smooth and continuous, meaning the spreading discs maintain a consistent rotational speed regardless of modest variations in tractor engine load or ground speed. This consistent output is critical for achieving uniform fertilizer spreader gearbox<\/strong><\/a> ratio-dependent spreading widths and application rates required by modern precision agriculture.\r\n\r\nThe die-cast aluminium housing of this agricultural gearbox is both lightweight and structurally rigid, resisting deformation under the mechanical loads typical of field operation. High-quality oil seals around each shaft prevent ingress of dust, fertiliser granules, moisture, and plant material that could accelerate gear and bearing wear. The sealed oil-bath lubrication system ensures all internal components, including bevel gears, bearings, and output shafts, remain continuously lubricated even during extended operating hours. A 0.35 L oil reservoir using SAE 80W-90 gear oil maintains an effective lubricant film across all contact surfaces, minimising friction heat and wear debris. The housing's corrosion-resistant aluminium alloy performs reliably when exposed to ammonium nitrate, urea, potash, and liquid fertiliser splatter, environments that would rapidly degrade inferior gearbox materials.\r\n\r\nAlthough the L-25A operates as a direct-drive unit, it is designed for use within well-specified power limits (max 8.1 kW input) to prevent overload damage. In practice, the upstream PTO driveline incorporating slip clutches or shear bolt protection devices on the connecting PTO shaft interrupts torque if the spreading mechanism encounters a blockage, a large stone, or a sudden jamming event, shielding the fertilizer gearbox internals from catastrophic impact loads. The oil-bath lubrication system doubles as a thermal buffer, absorbing and dissipating heat generated during sustained spreading operations on long field passes. This combination of passive thermal management and upstream mechanical protection means the gearbox can reliably operate through full-day spreading sessions across large agricultural properties without risk of premature failure. Service intervals are straightforward: change oil after the first 50 to 70 hours and thereafter every 500 hours or annually, whichever occurs first, ensuring sustained reliable performance across many seasons of continuous agricultural use.\r\n\r\n\"Fertilizer\r\n

Applications of the L-25A Fertilizer Spreader Gearbox<\/h2>\r\n
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Pasture Management<\/h3>\r\nIn livestock operations, even fertiliser coverage across pastures is critical for maintaining consistent forage quality and grass density. The L-25A\u00a0agricultural gearbox for fertilizer spreader\u00a0use drives spreading discs at the right speed to achieve uniform distribution of urea, lime, and blended fertilisers, supporting healthy sward regeneration, improved carrying capacity, and better animal nutrition outcomes across grazing paddocks.\r\n

Orchards and Vineyards<\/h3>\r\nPrecision spreading around established fruit tree and vine root zones is critical to avoid fertiliser burn, soil acidification, or root damage from over-application. The L-25A\u00a0agricultural gearbox\u00a0powers inter-row fertiliser spreaders used in high-value permanent crop systems including apples, grapes, citrus, and stone fruits, where accurate placement of granular fertiliser within the root zone directly impacts fruit quality, colour development, and annual yield.\r\n

Crop Farming<\/h3>\r\nEssential for the uniform application of nitrogen, phosphorus, and potassium-based fertilisers across grain crops, vegetables, pulses, and fruit orchards. Precise spreading at the correct\u00a0fertilizer spreader gearbox ratio\u00a0ensures optimal nutrient uptake per hectare, maximising yields and reducing fertiliser input waste. Suitable for both pre-planting broadcast applications and in-season top dressing across all major staple crops.\r\n\r\n<\/div>\r\n
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Lawn and Turf Management<\/h3>\r\nGolf courses, sports stadiums, racecourses, and municipal parks require precision fertiliser delivery to maintain playing surface quality. The L-25A\u00a0fertiliser spreader gearbox\u00a0enables calibrated, low-rate spreading ideal for slow-release granular fertilisers used on fine turf. Its smooth speed output eliminates streaking or uneven application that can cause discolouration or turf inconsistencies on high-profile playing surfaces.\r\n\r\n<\/div>\r\n
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Horticulture and Nurseries<\/h3>\r\nGreenhouse operations and commercial nurseries require precise, small-area fertiliser distribution to potted plants and ornamental crop beds. The L-25A's reliable power output makes it effective for driving small-scale disc spreaders that apply controlled quantities of slow-release granular fertilisers, controlled-release pellets, or organic bio-stimulants to container crops and raised horticultural beds without over-application risk.\r\n\r\n<\/div>\r\n
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Landscaping and Garden Maintenance<\/h3>\r\nFor small-scale landscaping contractors and garden maintenance teams, the compact 4.1 kg L-25A\u00a0fertilizer gearbox\u00a0is easily integrated into compact tractor-mounted spreading attachments. It enables controlled, low-volume fertiliser delivery to flower beds, ornamental shrubs, and garden borders, where even minor over-application can scorch sensitive plants. Its light weight keeps small spreader machine designs manageable and manoeuvrable in confined residential and commercial garden settings.\r\n\r\n<\/div>\r\n
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Soil Amendments and Lime Spreading<\/h3>\r\nBeyond conventional fertilisers, this\u00a0fertilizer distributor gearbox is effective for distributing agricultural lime, gypsum, compost granules, and soil conditioners across paddocks requiring pH correction or structure improvement. Consistent disc speed through the L-25A ensures even coverage of these often heavier and denser materials, which require reliable torque delivery to prevent spreading disc stall or uneven throw patterns across different spreading widths.\r\n\r\n<\/div>\r\n\"Fertilizer\r\n

L-25A Fertiliser Spreader Gearbox Parts<\/h2>\r\n1. Gearbox Housing (Aluminium Shell)\r\nThe die-cast aluminium housing forms the structural skeleton of the entire fertilizer spreader gearbox assembly. Precision-machined to tight dimensional tolerances, it maintains accurate gear and bearing alignment under load. Its corrosion-resistant alloy composition resists the aggressive chemical environment of fertiliser application, while the lightweight construction (contributing to the total 4.1 kg unit weight) simplifies handling, installation, and machine mounting on a wide range of spreader frames.\r\n\r\n2. Input Shaft\r\nThe hardened steel input shaft (X-axis) accepts PTO drive from the tractor via a 1\" 3\/8 Z6 splined connection, transferring 540 RPM rotational energy into the gearbox at up to 8.1 kW. It is precision-ground for concentricity and supported by sealed rolling-element bearings at both ends, ensuring minimal runout and extended fatigue life under the cyclic torsional loads typical of PTO-driven fertilizer spreader gearbox parts applications.\r\n\r\n3. Bevel Gears\r\nThe precision-cut bevel gear pair achieves the 1:1.35 speed conversion ratio at the heart of this agricultural gearbox. Manufactured from case-hardened alloy steel with ground tooth profiles, these gears deliver efficient power transmission with minimal noise and heat generation. The bevel arrangement enables a 90-degree axis change between input and output shafts, a configuration essential for connecting horizontal PTO drive to vertically-mounted spinning disc assemblies on fertiliser spreaders.\r\n\r\n4. Output Shaft\r\nThe output shaft (Z-axis, 1\" 3\/8 Z6 or 25 mm diameter cylindrical, depending on configuration) delivers the stepped-up rotational speed directly to the spreader disc hub or intermediate drive connection. Manufactured from high-tensile steel with surface hardening, the output shaft is rated for the full 9.9 kW output at 540 RPM input. Its mounting compatibility matches original Comer L-25A dimensions, allowing direct-fit replacement without modification to existing disc drive assemblies.\r\n\r\n5. Bearings\r\nHeavy-duty tapered or deep-groove rolling element bearings support both the input and output shafts within the aluminium housing. Designed for radial and axial load capacity well beyond the L-25A's rated operating conditions, these bearings provide the precise shaft support necessary to maintain gear mesh alignment and prevent premature tooth wear. Pre-lubricated and sealed against moisture and fertiliser contamination, they require no independent maintenance beyond the standard gearbox oil change schedule.\r\n\r\n6. Oil Seals\r\nRadial lip seals fitted at each shaft exit point prevent internal SAE 80W-90 gear oil from leaking out and block the entry of external contaminants including water, fertiliser dust, and abrasive soil particles. The seals are manufactured from oil-resistant elastomer compounds specifically formulated for long-term compatibility with gear lubricants in agricultural conditions. Regular inspection of fertilizer spreader gearbox oil level and seal integrity is recommended during each major service interval to detect early wear.\r\n\r\n7. Oil Fill, Level, and Drain Plugs\r\nDedicated plugs on the gearbox housing allow easy oil filling to the 0.35 L capacity mark, level checking, and clean oil drainage during scheduled changes. Correct fertilizer spreader gearbox oil level maintenance is critical to gear and bearing longevity. The plugs are positioned for accessible service without removing the gearbox from the machine, reducing service time. Magnetic drain plugs trap metallic wear particles from the oil, serving as an early warning indicator of internal component wear when inspected at each oil change.\r\n\r\n\"L-25J\r\n

Common Troubleshooting<\/h2>\r\nGearbox Overheating During Operation\r\nExcessive heat build-up in the fertilizer gearbox is most commonly caused by insufficient oil level, incorrect oil viscosity, or an oil that has degraded beyond its service life. First, stop the machine and allow the unit to cool. Check the fertilizer spreader gearbox oil level through the level plug and top up to the correct mark with SAE 80W-90 if low. If oil is discoloured (dark brown or black) or contaminated with water, perform an immediate oil change. If overheating persists after correct oil fill, inspect the gear mesh for signs of abnormal wear or a damaged bearing.\r\n\r\nUnusual Noise or Vibration\r\nGrinding, clicking, or rumbling sounds from the agricultural gearbox during operation typically indicate bearing wear, gear tooth damage, or shaft misalignment with the PTO drive line. Immediately stop the spreader and disengage PTO. Inspect the PTO shaft connection for angular misalignment beyond the manufacturer's recommended operating angle. Check the gearbox mounting bolts for looseness. Remove the inspection cover and examine gears for chipped or pitted teeth. If internal damage is confirmed, replacement of affected bearings or gears from the fertilizer spreader gearbox parts catalogue is recommended before resuming work.\r\n\r\nOil Leakage Around Shaft Seals\r\nOil seeping from around the input or output shaft exit points indicates a worn or damaged radial lip seal. This is a common wear item on any fertiliser spreader gearbox operating in dusty or chemically harsh environments. Replace the relevant shaft seal using a seal driver tool appropriate to the shaft diameter. Clean all mating surfaces before fitting the new seal to ensure a proper seat. Overfilling the gearbox beyond the 0.35 L maximum capacity can also cause pressure build-up that pushes oil past otherwise healthy seals, so always verify correct fill volume after topping up.\r\n\r\nSpreader Disc Speed Inconsistency\r\nIf the spreading discs are running at variable or reduced speed compared to normal operation, the first check should be tractor PTO shaft engagement and the condition of the connecting PTO driveshaft universal joints, which can seize or wear if lubrication is neglected. Internally, check that the fertilizer spreader gearbox ratio is producing the expected output speed by measuring output shaft RPM with a tachometer. Low output speed at correct PTO input speed may indicate worn bevel gear teeth, which require gear set replacement to restore normal performance.\r\n\r\nDifficult or Stiff PTO Shaft Engagement\r\nResistance when connecting the PTO shaft to the L-25A input can indicate corrosion buildup on the 1\" 3\/8 Z6 splined input shaft, foreign material lodged in the spline, or a deformed PTO coupling yoke. Clean the input shaft splines thoroughly with a wire brush and apply a light coat of anti-seize grease or corrosion inhibitor to prevent future seizure. Inspect the PTO shaft yoke bore for wear or deformation that may have resulted from repeated engagement at incorrect alignment angles, which can also accelerate input shaft bearing wear over time.\r\n\r\nMounting Looseness or Vibration at Spreader Frame\r\nPhysical looseness of the gearbox on its mounting frame leads to driveline vibration, accelerated bearing wear, and eventual gear misalignment. Inspect all four mounting flange bolts (M10 or equivalent to match the 11 mm hole pattern) for correct torque specification. Thread-locking compound applied to mounting bolts is advisable in high-vibration applications. If the mounting flange face shows signs of fretting corrosion or surface damage from prolonged loose mounting, clean and treat the contact surfaces before re-torquing to prevent recurrence of the looseness issue.\r\n\r\nPremature Gear or Bearing Failure\r\nEarly gear or bearing failure in a fertilizer spreader gearbox that has not reached its expected service life is almost always traceable to one of three root causes: operating at input powers exceeding the 8.1 kW maximum rating, running with insufficient or degraded oil, or sustained operation with PTO shaft misalignment beyond acceptable angles. Review the machine's operating conditions against the rated specifications. Confirm that the oil has been changed at the prescribed 50 to 70 hour initial interval and that SAE 80W-90 viscosity grade oil is being used, not a lighter automotive oil which lacks the load-carrying film strength required for gear lubrication.\r\n\r\nFertiliser Contamination of Gearbox Oil\r\nWater-mixed fertiliser solutions or hygroscopic granular materials can draw moisture into the gearbox if seals are compromised, leading to oil emulsification and loss of lubricating film strength. Milky or grey-coloured oil at the drain is a clear indicator of water contamination. Drain and flush the gearbox, replace the contaminated oil with fresh SAE 80W-90, and identify the moisture ingress point, typically a worn shaft seal or a cracked housing. Timely attention prevents corrosive damage to polished gear tooth surfaces and bearing raceways.\r\n\r\n\"Fertilizer\r\n

Correct Maintenance of the L-25A Fertilizer Spreader Gearbox<\/h2>\r\n
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Step 1: Initial Oil Fill Before First Use<\/h3>\r\nThe L-25A\u00a0fertilizer spreader gearbox\u00a0is supplied dry, without oil. Before the first operation, fill through the top fill plug with the correct SAE 80W-90 gear oil to the level plug mark (maximum 0.35 L). Use only the specified viscosity grade to ensure the oil film is adequate for the gear mesh contact pressures at 540 RPM input. Using incorrect oil viscosity is the leading cause of premature gear tooth surface fatigue in agricultural gearbox applications.\r\n\r\n<\/div>\r\n
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Step 2: First Oil Change at 50 to 70 Hours<\/h3>\r\nAfter the initial 50 to 70 operating hours, perform the first oil change. During break-in, small metallic wear particles from the bedding-in of gear tooth surfaces accumulate in the oil. Draining and replacing the oil at this interval removes these particles before they can act as abrasive cutting agents, significantly extending internal component life. Warm the gearbox slightly before draining to improve oil flow and particle suspension. Refill to the level plug mark with fresh SAE 80W-90.\r\n\r\n<\/div>\r\n
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Step 3: Regular Oil Changes Every 500 Hours or Annually<\/h3>\r\nAfter the initial change, replace the SAE 80W-90 gear oil every 500 operating hours or at least once per year, whichever comes first. This ensures lubricant additive packages for corrosion protection and extreme-pressure resistance remain effective. At each oil change, inspect the drained oil colour and clarity. Dark brown or grey oil indicates oxidation or water contamination, requiring investigation of seal integrity before the next spreading season. The 500-hour interval aligns conveniently with annual seasonal service schedules for most farming operations.\r\n\r\n<\/div>\r\n
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Step 4: Inspect and Clean External Housing<\/h3>\r\nAfter each spreading session, clean fertiliser residue, chemical deposits, and mud from the external surfaces of the aluminium housing. Concentrated fertiliser salts, particularly ammonium nitrate or urea-based products, are corrosive to aluminium if allowed to dry on the surface over extended periods. A low-pressure water rinse followed by drying is sufficient for routine cleaning. Inspect mounting bolts, shaft seal areas, and the housing surface for cracks, corrosion pitting, or mechanical damage that could compromise structural integrity or oil containment during the next operation.\r\n\r\n<\/div>\r\n
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Step 5: Check Shaft Seal Condition<\/h3>\r\nInspect input and output shaft lip seals for oil weeping, cracking, or hardening at each seasonal service. A thin film of oil on the outside of the shaft near the seal exit point is an early warning sign that seal replacement is needed within the next operating period. Replace seals proactively at the first sign of degradation, as a failed seal allows both oil loss and contaminant ingress. When replacing seals, always use a proper seal driver sized to the specific shaft diameter to avoid cocking or distorting the new seal lip during installation.\r\n\r\n<\/div>\r\n
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Step 6: Lubricate PTO Shaft and Check Alignment<\/h3>\r\nThe connecting PTO drive shaft, its universal joints, and slip clutch (where fitted) require their own lubrication schedule independent of the gearbox. Grease all universal joint nipples with a lithium-based EP grease at the interval specified by the PTO shaft manufacturer. Also verify PTO shaft operating angle does not exceed the U-joint manufacturer's rated maximum angle under working conditions, as excessive angle dramatically shortens joint life and introduces vibration impulses that stress the\u00a0fertilizer gearbox input shaft bearings and housing mountings.\r\n\r\n<\/div>\r\n\"Fertilizer\r\n

Fertilizer Spreader Gearbox and PTO Drive Shaft<\/h2>\r\nThe fertilizer spreader gearbox is the critical mechanical interface between the tractor's Power Take-Off and the spreading mechanism of the fertiliser distribution machine. It receives raw rotational power from the tractor PTO, which typically operates at a standardised 540 RPM shaft speed, and converts this into the speed and torque output most appropriate for driving the spreading disc assembly. In the case of the L-25A, the 1:1.35 ratio steps the input speed up slightly to deliver faster disc rotation that improves granule throw distance and spreading pattern width, while maintaining tractable torque levels. The gearbox also performs a critical geometric function, changing the angle of power transmission from the horizontal PTO shaft axis to the vertical or angled disc drive axis using its internal bevel gear set, a function that would otherwise require a complex and unreliable chain or belt transmission arrangement. Fertilizer spreader gearboxes from reputable manufacturers like CMN Transmission are engineered to perform this power routing reliably for thousands of operating hours under the demanding and chemically hostile conditions of agricultural fertiliser application.\r\n\r\nThe PTO shaft is the mechanical driveshaft that physically connects the tractor's rotating PTO output stub to the input shaft of the fertilizer distributor gearbox. Most modern PTO shafts used with fertiliser spreading equipment are telescoping assemblies incorporating two or more universal joints (U-joints) that accommodate the angular and length changes that occur as the spreader moves over uneven ground or turns in the field. The L-25A gearbox accepts standard 1\" 3\/8 Z6 (six-spline) PTO shaft connections, which is the most common standardised tractor PTO interface in the 540 RPM category globally, ensuring broad compatibility across tractor makes and models from all major agricultural regions.\r\n\r\nIn operation, the tractor operator engages the PTO lever, which connects the tractor's transmission to the PTO output shaft at a specified speed (540 or 1000 RPM). The rotating PTO stub drives the connected PTO driveshaft, which transmits this rotation through its universal joints to the input shaft of the L-25A agricultural gearbox. The gearbox receives this rotation at up to 8.1 kW, converts it through the 1:1.35 bevel gear set, and delivers the stepped-up speed and torque output to the spreader disc or auger shaft. The disc then rotates at the higher output speed and throws granular fertiliser, lime, or seed outward in a controlled spreading pattern determined by disc shape, vane configuration, and exit speed. The entire system operates as a continuous mechanical power train, with the efficiency of each link, tractor PTO engagement, PTO driveshaft, and gearbox, directly affecting the consistency and quality of the spreading pattern achieved across the field.\r\n\r\nSelecting the right PTO shaft to pair with the L-25A fertilizer spreader gearbox for sale is as important as the gearbox selection itself. The PTO shaft must be rated for at least the maximum power transmitted (8.1 kW at 540 RPM), with an appropriate safety factor for shock loads at PTO engagement. Length must be checked against the tractor-to-spreader distance at both minimum and maximum hitch extension, to ensure the shaft never bottoms out its telescopic tube or over-extends and separates. PTO shafts should incorporate a slip clutch or shear bolt protection device between the shaft and the gearbox input to interrupt torque if the spreading mechanism jams, protecting both the gearbox internals and the tractor PTO clutch from overload damage.\r\n\r\n\r\n\r\n
\"T-281A<\/td>\r\n\"PTO<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n

Why Choose CMN Transmission's Fertilizer Spreader Gearboxes?<\/h2>\r\nKorea CMN Transmission Co., Ltd. was established in 2000 and is headquartered in Sandan-o, Danwon-gu, Ansan-si, Gyeonggi-do, Korea. Over more than two decades, CMN Transmission has grown from a focused agricultural gearbox manufacturer into one of the most trusted names among global fertilizer spreader gearbox manufacturers. With more than 100 factory employees dedicated to R&D, precision manufacturing, technical sales, and global after-sale service, the company has consistently delivered agricultural gearboxes that meet and exceed the demands of modern precision farming operations worldwide.\r\n\r\nCMN Transmission exports to more than 60 countries across six continents, with active distribution channels in the United States, Canada, Mexico, Brazil, Argentina, France, Germany, Italy, Spain, the United Kingdom, Russia, China, India, Thailand, Vietnam, Turkey, Australia, New Zealand, and many more. This global reach is supported by a comprehensive product range spanning rotary cutter gearboxes, rotary tiller gearboxes, feed mixer gearboxes, rotary mower gearboxes, fertilizer spreader gearboxes, flail mower gearboxes, post hole digger gearboxes, round baler gearboxes, square baler gearboxes, disc mower gearboxes, centre pivot irrigation gearboxes, hydraulic drive gearboxes, silage machine gearboxes, orchard sprayer gearboxes, rotary rake gearboxes, combine harvester gearboxes, grain storage gearboxes, grain transportation gearboxes, corn header gearboxes, cutting bar gearboxes, poultry feeding gearboxes, and custom agricultural gearboxes covering nearly 1,000 specifications. This breadth makes CMN Transmission a one-stop source for fertilizer spreader suppliers and OEM machinery builders globally.\r\n\r\nAnnual production exceeds 500,000 units, supplying both global OEM agricultural machinery manufacturers and distribution networks with the consistent quality and long-term durability they depend on for customer satisfaction. CMN Transmission holds CE, ISO 9001, Environmental Management, and Occupational Health and Safety management system certifications, ensuring every agricultural gearbox for fertilizer spreader and other agricultural applications that leaves the factory conforms to internationally recognised engineering and quality standards.\r\n\r\nChoosing CMN Transmission for your fertilizer spreader gearbox for sale requirements means partnering with a manufacturer that invests continuously in product R&D, maintains strict incoming material and outgoing product inspection protocols, and provides dedicated technical application support for customers worldwide. Whether you are sourcing a single replacement L-25A gearbox or building a large-scale OEM supply relationship for thousands of units per year, CMN Transmission has the manufacturing scale, quality systems, and global logistics capability to support your business reliably season after season.\r\n\r\n\"Rotary\r\n

Frequently Asked Questions<\/h2>\r\nQ1: Is the CMN L-25A a direct replacement for the Comer L-25A gearbox?<\/strong>\r\nA: Yes. The CMN Transmission L-25A fertilizer spreader gearbox is engineered as a direct OEM-equivalent replacement for the Comer L-25A unit. All critical dimensions including the mounting flange bolt hole pattern (N.4 x diameter 11 mm), shaft diameters, and shaft lengths are matched to the original Comer specification. No machine frame modification, adaptor plates, or shaft machining is required for a standard direct swap installation.\r\n\r\nQ2: What oil should I use in the L-25A fertilizer spreader gearbox?<\/strong>\r\nA: The L-25A requires SAE 80W-90 gear oil with a maximum fill capacity of 0.35 litres. Use a mineral or synthetic EP (Extreme Pressure) gear oil meeting GL-4 or GL-5 specifications. Do not use engine oil, hydraulic oil, or grease as a substitute. Using the correct viscosity grade is critical for maintaining the protective lubricant film between bevel gear tooth surfaces at 540 RPM input speed. If operating in extreme low-temperature environments, consult CMN Transmission for alternative viscosity recommendations.\r\n\r\nQ3: What is the correct fertilizer spreader gearbox oil level check procedure?<\/strong>\r\nA: To check the fertilizer spreader gearbox oil level, ensure the machine is parked on level ground and the gearbox has cooled from operating temperature. Remove the oil level plug (located on the side of the housing) and check that oil is present up to the bottom of the level plug hole thread. If oil does not reach the level plug, add SAE 80W-90 through the top fill plug until oil begins to weep from the level plug hole, then refit both plugs securely. Never overfill beyond the level plug as excess oil creates internal pressure that can blow out shaft seals.\r\n\r\nQ4: What fertilizer spreader gearbox ratio does the L-25A have, and what does it mean for spreading?<\/strong>\r\nA: The L-25A has a 1:1.35 fertilizer spreader gearbox ratio. This is a speed-increasing ratio, meaning for every one revolution of the input shaft, the output shaft turns 1.35 times. At standard 540 RPM PTO input, the output shaft turns at approximately 729 RPM. This faster output speed drives spreading discs at a higher rotational velocity, increasing the centrifugal throw force on the fertiliser particles and achieving greater spreading width compared to a 1:1 direct drive gearbox, without requiring a higher tractor PTO speed.\r\n\r\nQ5: Can the L-25A handle liquid fertilizers as well as granular products?<\/strong>\r\nA: The L-25A agricultural gearbox is designed to drive the mechanical spreading mechanism, not to contact the fertiliser product directly. Its aluminium housing and sealed shaft design resist external exposure to fertiliser splatter from both granular and liquid product applications. For liquid fertiliser spreading systems using disc or boom spreaders, the gearbox performs the same power transmission function as in granular spreading. Ensure the external housing and seals are rinsed after liquid fertiliser sessions to prevent extended chemical contact with the housing surfaces.\r\n\r\nQ6: How long does the L-25A fertilizer spreader gearbox last under normal farm use?<\/strong>\r\nA: Under normal agricultural operating conditions with the prescribed oil changes (initial at 50 to 70 hours, then every 500 hours or annually), the L-25A fertilizer distributor gearbox is designed for a service life of several thousand operating hours. Actual longevity depends on operating within rated power limits, maintaining correct PTO shaft alignment, using the specified SAE 80W-90 oil, and adhering to the maintenance schedule. Operators who follow the recommended service routine consistently report gearboxes running well beyond 1,000 hours before requiring internal component attention.\r\n\r\nQ7: What shaft configurations are available for the L-25A?<\/strong>\r\nA: The L-25A family, as detailed in the Comer catalogue and matched by CMN Transmission, is available in multiple shaft configurations. The input shaft (X) accepts a 1\" 3\/8 Z6 six-spline PTO connection or a 25 mm cylindrical shaft depending on configuration. Output shafts (Y and Z positions) are available in 1\" 3\/8 Z6 spline, 22 mm, or 25 mm cylindrical formats at various lengths, allowing adaptation to different spreader disc hub interfaces. Contact CMN Transmission to confirm the exact shaft configuration required for your specific spreader model before ordering.\r\n\r\nQ8: Is a PTO shaft included with the L-25A gearbox purchase?<\/strong>\r\nA: No, the L-25A fertilizer gearbox is supplied as a standalone unit without a PTO driveshaft. The connecting PTO shaft must be selected separately based on the tractor-to-machine distance and power requirements. CMN Transmission can advise on compatible PTO shaft specifications on request. When selecting a PTO shaft for use with the L-25A, ensure it is rated for at least the maximum 8.1 kW input power and incorporates a slip clutch or shear bolt overload protection device for safe operation.\r\n\r\nQ9: Where can I buy the L-25A fertilizer spreader gearbox and what is the lead time?<\/strong>\r\nA: The L-25A fertilizer spreader gearbox for sale is available to order directly from CMN Transmission through this product page, or via our authorised distributor network in the United States, Canada, Europe, Australia, and other major agricultural markets. Standard lead time for in-stock units is 1 to 3 business days for domestic orders, with international shipping times varying by destination. Contact our sales team for express shipping options or bulk order pricing for dealer and OEM customers.\r\n\r\nQ10: What certifications does CMN Transmission hold for the L-25A gearbox?<\/strong>\r\nA: CMN Transmission holds CE marking (confirming conformity with European safety standards), ISO 9001 quality management system certification, Environmental Management certification, and Occupational Health and Safety certification. These accreditations demonstrate that the L-25A fertiliser spreader gearbox is manufactured under a verified and audited quality management system, providing customers with confidence in product consistency, dimensional accuracy, and material traceability across all production batches.\r\n\r\n\"L-25A\r\n

Customer Reviews<\/h2>\r\nJames, Corn and Soybeans, United States<\/strong>\r\n\"We run a mixed arable operation here in Iowa and had our original Comer box fail right at the start of the spring spreading season. CMN Transmission had the L-25A in stock and it shipped within 48 hours. Dropped straight in without a single modification needed. Been running it for two seasons now and it handles urea and MAP without any issues at all. Build quality feels solid compared to what we had before. Very happy with the purchase.\"\r\n\r\nMichael, Crop Farming, Canada<\/strong>\r\n\"I ordered two units of the L-25A gearbox for our spreader setup on the farm in Saskatchewan. The 1:1.35 ratio is exactly what our spreader needed. Delivery came to Calgary in about 12 days which was actually faster than I expected. One thing I really appreciated was the technical support team answering my questions about oil fill before commissioning. No issues so far after one full spring and one fall season. Would order no question again.\"\r\n\r\nCarlos, Soybean and Cotton, Brazil<\/strong>\r\n\"We work with fertilizer spreaders on our farm in Mato Grosso and needed a reliable replacement for our Comer L-25A. CMN Transmission delivered quickly and the product fit perfectly. We have already used it for about 300 hours distributing urea and potassium without any leaks or overheating. The light weight of 4.1 kg makes maintenance in the field much easier. I only deducted one star because the promised delivery time was delayed a bit. Overall great product.\"\r\n\r\nLuis, Wheat and Soybeans, Argentina<\/strong>\r\n\"We have been using this gearbox on our fertilizer spreaders in Cordoba for the last three agricultural cycles. The 1:1.35 ratio gives us exactly the application width we are looking for with wheat and soybeans. The aluminum housing has held up well even with mixed liquid fertilizers. The first time we used it we changed the oil at 60 hours as indicated by the instructions and since then the gear has worked perfectly. Very good product, we recommend it.\"\r\n\r\nDavid, Crop Farming, United Kingdom<\/strong>\r\n\"We run a contract spreading operation in North Yorkshire and needed a reliable replacement gearbox mid-season. CMN Transmission dispatched the L-25A within 24 hours and it arrived next morning. Fitted it on the spreader trailer same day and we were back in the field by afternoon. The quality of the aluminium housing and internal gears looks as good as any OEM unit I've used. Five months on and there's no issues at all. Good value, brilliant service, and an excellent product for the price point.\"\r\n\r\nPierre, Crop Farming, France<\/strong>\r\n\"We have been using this gearbox on our spreaders in Beauce for two seasons now. The 1:1.35 ratio is perfectly suited for our fertilizer spreaders. The manufacturing quality is excellent and the aluminum casing is well protected against corrosive fertilizers. We ordered three units in total and all of them are working without any problems. The technical support at CMN Transmission is very responsive; they answered all our questions quickly. Very good product.\"\r\n\r\nKlaus, Agricultural Equipment, Germany<\/strong>\r\n\"As a dealer for agricultural equipment parts in Bayern, I've sourced these L-25A gearboxes from CMN Transmission for several of our customers. The fitment accuracy compared to original Comer units is spot on, our customers have all reported trouble-free installation. The consistent quality across the batches we have received and the competitive pricing has made this our go-to recommendation for Comer L-25A replacement. CMN Transmission's documentation is also well done, which helps our customers with first-time service.\"\r\n\r\nAndrew, Agricultural Equipment, Australia<\/strong>\r\n\"We supply and service fertilizer spreading machinery in Victoria and New South Wales and CMN Transmission is now our preferred source for L-25A replacement gearboxes. The unit quality is consistent, delivery to Australia is reasonable, and the gearbox handles the conditions here well, including the heat and the abrasive fertiliser blends used for broad-acre spreading. Had one customer run his L-25A for over 800 hours before a scheduled service and the gearbox internals looked excellent on inspection. Really impressed with the longevity.\"\r\n\r\nRoberto, Agricultural Machinery, Mexico<\/strong>\r\n\"We are an agricultural machinery service company in central Mexico and we have installed several of these gearboxes in our clients' fertilizer spreaders. The 1:1.35 transmission ratio works well with the discs of the European equipment we have in our area. The quality is good and the price is very competitive compared to the original spare parts. We deducted one star because sometimes the international shipping time is a bit long, but the product itself is excellent.\"","_et_gb_content_width":""},"product_brand":[],"product_cat":[309],"product_tag":[316,315,311,317,318,319,310],"class_list":{"0":"post-8104","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-fertilizer-spreader-gearbox","7":"product_tag-fertiliser-spreader-gearbox","8":"product_tag-fertilizer-distributor-gearbox","9":"product_tag-fertilizer-spreader-gearbox","10":"product_tag-fertilizer-spreader-gearbox-for-sale","11":"product_tag-fertilizer-spreader-gearbox-manufacturers","12":"product_tag-fertilizer-spreader-gearbox-suppliers","13":"product_tag-gearbox-for-fertilizer-spreader","15":"first","16":"instock","17":"shipping-taxable","18":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/product\/8104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/comments?post=8104"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/media\/8004"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/media?parent=8104"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/product_brand?post=8104"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/product_cat?post=8104"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/ms\/wp-json\/wp\/v2\/product_tag?post=8104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}