arbre de prise de force du tracteur<\/strong><\/a> Il s'agit d'une transmission \u00e0 vitesse constante CAT 6 reliant la prise de force du tracteur \u00e0 l'entr\u00e9e principale du r\u00e9ducteur de la fl\u00e8che de la faucheuse-batteuse \u00e0 disques. La conception du joint homocin\u00e9tique \u00e0 l'int\u00e9rieur de cet arbre est essentielle au bon fonctionnement de la faucheuse-batteuse. Contrairement \u00e0 un joint de cardan classique, qui engendre une fluctuation de vitesse inh\u00e9rente de deux fois par tour lorsqu'il fonctionne en angle, le joint homocin\u00e9tique maintient une vitesse angulaire parfaitement uniforme tout au long de sa rotation, quel que soit l'angle de d\u00e9viation entre l'entr\u00e9e et la sortie. Ceci \u00e9limine les variations de couple, les vibrations et le bruit qu'un arbre standard g\u00e9n\u00e9rerait lorsque la faucheuse-batteuse \u00e0 disques pivote lat\u00e9ralement ou en mode pivot central.<\/p>\nAfter the main PTO drive shaft delivers power to the tongue gearbox, the gearbox splits and redirects the rotational force toward the cutterbar drive train. On swivel-hitch models such as the H7230, H7330, H7460, and H7560, a dedicated swivel gearbox is integrated into the tongue assembly to maintain the PTO shaft angle straight through turns of more than 90 degrees. This gearbox is critical because it allows the operator to execute extremely tight headland turns and cut around field obstacles without ever needing to stop and realign the machine. Power exits the tongue gearbox via an intermediate PTO driveline shaft and enters the main cutterbar drive gearbox on the frame of the implement.<\/p>\n
For the H7230, H7330, H7460, and H7560 models, one or more intermediate PTO shaft assemblies bridge the tongue gearbox to the cutterbar gearbox, often including a 55N square-profile shaft with an integrated clutch for the larger 100 HP models. The secondary disc mower PTO shaft then distributes power laterally through the MowMax cutterbar system, driving the series of individual sealed disc gearboxes mounted along the cutterbar frame. Each disc gearbox multiplies the input shaft RPM to drive the cutting discs at approximately 3,000 RPM, generating the high blade tip speed necessary for a clean, high-quality cut through dense forage crops. For the secondary shaft position on most Discbine models, CMN Transmission recommends a Category 5 Double CV configuration with the FNT34 combination clutch, ensuring smooth power delivery to the cutterbar and reliable overload protection for the gearbox chain.<\/p>\n
L'ensemble d'embrayage FNT34 sur l'arbre de prise de force \u00e0 glissement secondaire remplit simultan\u00e9ment deux fonctions de protection distinctes mais compl\u00e9mentaires. L'\u00e9l\u00e9ment \u00e0 disque de friction assure un seuil de glissement calibr\u00e9\u00a0: lorsqu'une barre de coupe rencontre un blocage soudain, un choc avec une pierre ou l'impact d'un corps \u00e9tranger g\u00e9n\u00e9rant un pic de couple d\u00e9passant la limite fix\u00e9e par l'embrayage, les plaquettes de friction patinent instantan\u00e9ment pour absorber l'\u00e9nergie du choc avant qu'elle ne se propage \u00e0 travers le joint de cardan, le joug et les composants internes de la bo\u00eete de vitesses de l'arbre de prise de force. Ce m\u00e9canisme prot\u00e8ge ainsi les composants les plus co\u00fbteux d'une d\u00e9faillance catastrophique.<\/p>\n
![\"Arbre](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-24.webp\")
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Applications of Disc Mower PTO Shaft<\/h2>\n
1. Hay Harvesting<\/strong>
\nThe primary application for the New Holland Discbine series. The disc mower cuts grasses and legumes into windrows while the integrated conditioning rolls crimp and crack the stems to accelerate field drying before baling. A reliable PTO shaft for discbine is the critical link that transfers tractor power to the cutterbar at the consistent RPM required for a clean, high-quality cut across varied crop densities and field conditions. Any interruption in PTO shaft performance during the narrow harvest weather window directly reduces hay quality and profitability.<\/p>\n2. Forage Harvesting<\/strong>
\nMowing high-value crops such as alfalfa, clover, and ryegrass at the right stage of maturity requires the cutterbar to run at precise, consistent speed throughout the entire swath. The 1000 PTO shaft configuration used on the larger Discbine models delivers the RPM stability needed to maximize nutritional content and minimize leaf loss at the point of cutting, whether the crop is destined for dry hay storage or green chop for direct feeding. An accurately calibrated slip clutch on the PTO drive shafts assembly protects the gearbox investment without compromising cut quality.<\/p>\n3. Silage Production<\/strong>
\nCutting crops at higher moisture levels for fermented silage storage in bunkers, pits, or wrapped bales demands fast, even cutting across the full width of the machine to ensure uniform fermentation. The 540 PTO shaft and 1000 rpm PTO shaft options across the Discbine range allow operators to match PTO speed to tractor output and silage crop type. Reliable PTO shaft parts are especially critical in silage operations because any shaft failure mid-cut results in uneven moisture in the wilted crop, which compromises fermentation quality and silage dry matter losses.<\/p>\n4. Gestion des p\u00e2turages<\/strong>
\nTopping and trimming pastures to control rank or stemmy growth, remove weeds, and encourage fresh and palatable re-growth for grazing animals places heavy intermittent demands on the discbine drivetrain. The combination of dense root crowns, embedded wire, stones, and sudden terrain changes makes the overrunning clutch function of the FNT34 shear bolt PTO shaft alternative especially valuable in pasture environments. A robust PTO shaft tractor interface with proper CV joint articulation ensures the machine tracks ground contours without generating destructive torque spikes during the frequent direction changes typical of irregular paddock shapes.<\/p>\n5. Cover Crop Termination<\/strong>
\nCutting down winter cover crops such as cereal rye or vetch ahead of the planting season, leaving the biomass as a protective mulch layer to suppress weeds and protect soil structure. Cover crop termination often involves mowing at high forward speeds through dense, lodged crop stands that test the torque capacity of every component in the PTO driveline shaft system. Choosing the correct PTO shaft sizes and category rating for the tractor HP being used avoids overloading the drivetrain and ensures that the cut biomass is distributed uniformly across the full cutting width for effective mulch coverage.<\/p>\n6. Roadside & Specialty Mowing<\/strong>
\nMaintaining roadsides, drainage ditches, airport buffer strips, and conservation headlands where a clean, controlled cut is needed in irregular or sensitive areas. In these applications, the center-pivot and swivel-hitch Discbine models depend entirely on the CAT 6 CV tractor PTO shafts to maintain smooth power delivery through the extreme articulation angles needed to position the cutterbar precisely along sloped banks, ditches, and corners. The PTO shaft guard and enclosed drivetrain design are also especially important in public roadside work where bystander safety standards apply.<\/p>\n![\"Arbre](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-21.webp\")
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How to Install PTO Shaft on New Holland Discbine<\/h2>\n
1. Safety Preparation: Disengage PTO and Chock Wheels
\nBefore beginning any PTO shaft installation or removal procedure, shut off the tractor engine completely and allow all rotating components to come to a full stop. Apply the tractor parking brake firmly and chock the rear wheels to prevent any movement. Disconnect the spark plug lead on older tractors or turn the key fully to the off position on modern models. Never attempt to install or remove a PTO driveline shaft while any components are still turning, even at very low speed. Confirm that no residual hydraulic pressure remains in the discbine lift circuit that could cause the header to drop unexpectedly during the procedure.<\/p>\n
2. Measure and Confirm PTO Shaft Length Before Fitting
\nBefore sliding the new PTO shaft tube onto the tractor and implement stubs, measure the distance between the two yoke connection points with the discbine hitched to the tractor at normal operating height. The shaft should overlap by at least 1\/3 of its telescoping travel when fully compressed, and the two yoke halves should not contact each other or hit the shaft tube ends when the machine is at full articulation angle. A PTO shaft length that is too short risks disengaging the telescoping tubes under extreme articulation, while an excessively long shaft risks bottoming out and bending or cracking the PTO shaft tubing when the machine moves over ground undulations.<\/p>\n
3. Slide and Lock the Tractor-Side Yoke onto the PTO Stub
\nAlign the PTO shaft yoke spline with the tractor PTO output stub, ensuring that the correct spline profile is matched (1.375-21 or 1.750-20 as applicable to your Discbine model). Push the yoke firmly onto the stub until the spring-loaded locking collar clicks into the groove and the yoke is fully seated with no axial play. Tug the yoke firmly to confirm it is locked. Never start the tractor with an unlocked yoke. On models where a PTO shaft adapter is used to bridge a difference between tractor and implement spline sizes, confirm the adapter is correctly torqued to specification before fitting the main driveline shaft.<\/p>\n
4. Connect the Implement-Side Yoke to the Discbine Input
\nConnect the implement-side yoke to the discbine tongue gearbox input shaft using the same locking collar procedure used on the tractor side. On Discbine models using a combination clutch, ensure the clutch body faces the correct direction as marked on the FNT34 housing (the overrunning clutch must be oriented toward the implement side, not the tractor side). Check that the PTO shaft cover chain anchor points are correctly attached to both the tractor drawbar bracket and the implement frame to prevent the guard tube from rotating with the shaft. A loose or unanchored PTO shaft guard is a serious safety hazard and may cause the guard to wrap around the shaft during operation.<\/p>\n
5. Lubrication, Trial Run, and Final Checks
\nApply lithium-complex grease to all PTO shaft u joint cross-kit grease nipples until fresh grease appears at the needle roller bearing seals on all four trunnion ends. Also grease the telescoping inner and outer shaft profile tubes to prevent fretting corrosion and ensure smooth length adjustment under load. Start the tractor and engage the PTO at low throttle first, listening and observing for any unusual vibration, noise, or misalignment before bringing the machine up to full working RPM. After the first hour of operation, re-torque any visible bolt connections on the clutch and yoke assemblies, and re-check the guard chain anchor points for security. This initial inspection interval is standard practice after fitting any new agricultural PTO shaft assembly.<\/p>\n
![\"Arbre](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-26.webp\")
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How to Choose the Right PTO Shaft for Disc Mower<\/h2>\n
1. Confirm Your Exact Discbine Model Number<\/strong>
\nThe model number (H7220, H7230, H7320, H7330, H7450, H7460, H7550, or H7560) determines not only the PTO shaft category and PTO shaft dimensions required, but also whether your machine uses one, two, or three shaft positions in the drivetrain. The shaft requirements for a 65 HP H7220 are fundamentally different from those of a 100 HP H7460, and ordering the wrong category will result in a shaft that either does not physically fit or is under-rated for the torque load it must transmit. Always locate the model plate on the tongue frame before placing an order, and note the production year if possible for variant identification.<\/p>\n2. Identify Your Tractor PTO Speed: 540 or 1000 RPM<\/strong>
\nThe H7220 and H7320 are 540 RPM only, requiring a standard 540 PTO shaft configuration. The H7450, H7460, H7550, and H7560 require a 1000 PTO shaft. The H7230 and H7330 can run on either 540 or 1000 RPM, so the shaft must be selected to match the tractor PTO output speed in actual field use. Running a discbine on the wrong PTO speed will either dramatically overspeed the cutterbar discs (creating a dangerous blade failure risk at 1000 RPM on a 540-designed machine) or underspeed them (producing a poor quality cut with excessive crop plugging). Verify the tractor PTO speed selector position before finalizing the shaft specification.<\/p>\n3. Verify Tractor Spline Size and Hitch Height<\/strong>
\nThe CAT 6 CV main shaft is available with either a 1.375-21 spline (6-spline, common on 65-80 HP tractors) or a 1.750-20 spline (21-spline, used on 90-100+ HP tractors). Measure the PTO stub diameter precisely if you are unsure, or refer to the tractor operator manual for the specified PTO output shaft profile. Additionally, the distance between the tractor drawbar pin and the tractor PTO centerline affects the effective shaft angle at working height. If this distance is non-standard due to a modified hitch bracket or an unusual tractor-implement combination, our engineering team can calculate the correct PTO shaft length and provide a custom configuration to suit the exact geometry.<\/p>\n4. Choose Clutch Type Based on Operating Conditions<\/strong>
\nFor most Discbine applications, the FNT34 combination clutch on the secondary slip clutch PTO shaft position is the preferred choice, offering both friction slip protection and overrunning capability in one compact assembly. However, in some very rocky or obstructed fields where extreme impact loads are frequent, a shear bolt PTO shaft or PTO shaft shear bolt design may be preferred because the shear bolt provides an absolutely definite, positive torque limit and is quickly replaceable in the field with a standard hardware item. Our CMN Transmission technical team can advise on the appropriate clutch selection for your specific field conditions, crop type, and typical obstacle frequency to ensure the right level of drivetrain protection is specified from the start.<\/p>\n![\"Arbre](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-20.webp\")
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Common PTO Driveline Shaft Troubleshooting<\/h2>\n
1. Vibrations excessives pendant le fonctionnement
\nVibration in the PTO drive shaft during mowing is most commonly caused by worn or damaged PTO shaft universal joint cross-kits, a bent or kinked PTO shaft tube, misaligned yoke phasing (the two yokes must be in the same plane, not 90 degrees offset), or a shaft running at an excessive operating angle for its category rating. Inspect the cross-kit needle rollers for wear or seizure by checking for any play or rough rotation at each trunnion journal. Replace the cross-kit assembly immediately if any roughness or looseness is felt, as a failed U-joint can disintegrate under load and cause significant secondary damage to the machine and a serious safety hazard for the operator.<\/p>\n
2. Clutch Slipping Under Normal Load
\nSi l'embrayage \u00e0 friction FNT34 de l'arbre de prise de force \u00e0 glissement patine en fonctionnement normal aux champs, sans surcharge apparente, les causes les plus probables sont l'usure des garnitures du disque de friction, la contamination des surfaces de friction par de la graisse ou de l'huile, ou une pr\u00e9charge du ressort incorrecte apr\u00e8s une intervention pr\u00e9c\u00e9dente. N'essayez pas d'augmenter la pr\u00e9charge du ressort d'embrayage au-del\u00e0 des sp\u00e9cifications du fabricant \u00e0 titre de solution temporaire, car cela d\u00e9sactiverait la protection contre les surcharges et risquerait d'endommager la bo\u00eete de vitesses lors d'un prochain choc avec une pierre. Il est plut\u00f4t n\u00e9cessaire de d\u00e9monter l'embrayage, d'inspecter l'\u00e9tat du disque de friction, de nettoyer soigneusement toutes les surfaces de contact, de remplacer les pi\u00e8ces us\u00e9es et de r\u00e9gler la pr\u00e9charge du ressort au couple sp\u00e9cifi\u00e9 avant de remettre en service les \u00e9l\u00e9ments de l'arbre de prise de force.<\/p>\n
3. Telescoping Tube Seizing or Difficult to Extend
\nIf the inner and outer PTO shaft tubing profiles are binding or seizing when the machine is hitched at an angle, the root cause is almost always lack of lubrication on the sliding profile surfaces, combined with the abrasive fretting wear that accumulates when the tubes are operated dry for extended periods. Clean the inner and outer profile sections with a clean rag, apply a generous coat of lithium-based grease, and cycle the shaft through its full extension range several times to distribute the grease evenly. For severely corroded profiles, a light application of penetrating oil followed by careful clean-up and fresh grease may be needed. Regularly greasing the PTO shaft tube sliding interface at the same service interval as the cross-kits prevents this issue from recurring.<\/p>\n
4. Noisy Operation or Clicking from PTO Shaft Area
\nClicking, knocking, or rhythmic noise from the tractor PTO shaft area during operation typically indicates a failing cross-kit needle roller bearing, loose or damaged PTO shaft yoke locking collar, or a worn overrunning ratchet mechanism inside the FNT34 combination clutch. Locate the source of the noise carefully by running the discbine at low speed on flat ground with the cutterbar raised, observing the shaft from a safe distance while listening for the click cycle frequency. A click that repeats at shaft rotation frequency (once per revolution) usually indicates a cross-kit problem, while a click that occurs irregularly often points to the overrunning clutch ratchet engagement. Address the noise source promptly as continued operation with a damaged component accelerates wear dramatically and increases the risk of sudden shaft failure.<\/p>\n
5. PTO Shaft Guard Damage or Breakage
\nA cracked, missing, or non-rotating PTO shaft cover is both a safety compliance failure and a maintenance indicator. The guard should rotate freely on its bearing relative to the inner shaft, and the chain anchor must be securely attached at both ends. A guard that has seized onto the shaft and is rotating with it generates significant friction heat and will wear through the plastic rapidly. Always replace a damaged PTO shaft guard immediately and never operate the discbine with an exposed rotating shaft, as the entanglement risk to operators is severe. Our replacement guard kits are designed to match the exact diameter and length of our CMN agricultural PTO shaft assemblies and include all anchor chains, end caps, and fitting hardware.<\/p>\n
![\"Arbre](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-28.webp\")
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Disc Mower PTO Shaft and Disc Mower Gearbox<\/h2>\n
The disc mower PTO shaft is the primary mechanical link between the tractor and the entire disc mower drivetrain. It is responsible for transferring engine torque from the spinning PTO output stub, through the working length of the hitch connection, and into the input gearbox of the disc mower or discbine implement. On the New Holland Discbine series, this shaft must accommodate the unique geometric demands of a machine that can pivot, swivel, and articulate at steep angles during operation and field headland turns, which is why the CAT 6 Constant Velocity design is specified for the main shaft position. The PTO drive shaft for discbine also incorporates safety protection in the form of the FNT34 combination clutch, which shields both the tractor and implement drivetrain from shock loads and overrunning inertia forces. Without a properly functioning tractor PTO drive shaft, no power reaches any part of the disc mower cutting or conditioning system, making it the single most critical mechanical component in the entire implement powertrain from the perspective of operational availability.<\/p>\n
CMN Transmission manufactures and supplies the complete PTO shaft for disc mower range to match every configuration in the Discbine lineup, from the compact 540 RPM side-pull models to the high-output 1000 RPM center-pivot wide-cut machines. Each shaft assembly is designed and tested to deliver the rated HP and torque capacity of the implement without vibration, noise, or premature wear throughout its full service life.<\/p>\n
The disc mower gearbox, also known as the cutterbar gearbox or disc drive gearbox, is the power distribution hub that receives the input torque from the PTO shaft driveline and converts it into the high-speed rotational output needed to drive the individual cutting discs. On the New Holland Discbine MowMax cutterbar system, each cutting disc is driven through its own individually sealed gearbox module with a dedicated oil reservoir, which means there is a series of gearboxes linked in sequence along the cutterbar. Each gearbox module multiplies the input shaft speed from the 540 or 1000 RPM PTO input up to the cutterbar disc operating speed of approximately 3,000 RPM, which is the speed required for clean, high-velocity blade-tip cutting through dense forage crops. The cutterbar gearboxes are connected in series by short lateral shaft segments, creating a continuous mechanical power chain from the primary input at one end of the cutterbar to the final disc gearbox at the opposite end.<\/p>\n
The essential interdependence between the PTO driveline shaft for disc mower and the disc mower gearbox is direct and absolute: the gearbox cannot function without the PTO shaft delivering input power, and the PTO shaft serves no purpose if the gearbox fails to receive and distribute that power correctly. In practice, the two components must be correctly matched in torque capacity and rotational speed to ensure that neither is overloaded relative to the other. When replacing either component, it is best practice to inspect both simultaneously: a worn or failed gearbox is often the root cause of abnormal torque spikes that have already accelerated PTO shaft wear, and vice versa.<\/p>\n
![\"Bo\u00eete](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/0_Disc-Mower-Gearbox-1.webp\")
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Pourquoi choisir les arbres de prise de force agricoles de CMN Transmission ?<\/h2>\n
CMN Transmission (Cor\u00e9e) figure parmi les principaux fournisseurs mondiaux de solutions de transmission de puissance pour l'industrie et l'agriculture. Sa gamme de produits comprend des arbres de transmission pour prises de force, des r\u00e9ducteurs agricoles, des v\u00e9rins hydrauliques, des r\u00e9ducteurs plan\u00e9taires, des r\u00e9ducteurs \u00e0 vis sans fin, des engrenages coniques, des pignons de cha\u00eene, des cha\u00eenes, des cr\u00e9maill\u00e8res, des poulies, des bagues coniques, des accouplements, et bien plus encore. Bas\u00e9e \u00e0 Ansan-si, dans la province de Gyeonggi-do, en Cor\u00e9e, et disposant d'une base de production et de plus de 10 usines coop\u00e9ratives, l'entreprise maintient un stock de plus de 150\u00a0000 r\u00e9f\u00e9rences et dessert des clients dans plus de 53 pays en Am\u00e9rique du Nord, en Europe, en Am\u00e9rique du Sud, au Moyen-Orient, en Afrique, en Asie du Sud-Est et en Oc\u00e9anie.<\/p>\n
What sets CMN Transmission apart in the agricultural PTO shaft market is our commitment to factory-direct pricing without sacrificing quality. As an integrated manufacturing and trading company, we eliminate the multiple dealer markups that inflate the cost of OEM replacement parts. Every tractor PTO shaft we produce is manufactured using advanced CAD design, precision CNC machining, modern heat treatment processes, and rigorous quality testing. Our products carry both ISO 9001 and CE certifications, ensuring compliance with international safety and performance standards.<\/p>\n
Beyond product quality, we offer a level of customer support that large OEM brands often cannot match. Our technical team provides pre-sale consultation to confirm spline configurations, PTO shaft dimensions, and clutch specifications for your exact tractor and implement combination. We offer custom PTO shaft manufacturing for non-standard applications and provide detailed dimensional drawings upon request. Our PTO shaft parts catalog covers the full range from compact 540 PTO shaft configurations to high-output 1000 rpm PTO shaft assemblies, with shear pin PTO shaft, slip clutch PTO shaft, and combination clutch variants all available from stock.<\/p>\n
After the sale, our one-stop after-sales service ensures that replacement components, technical guidance, and warranty support are always accessible. When you choose CMN Transmission, you are choosing a partner committed to keeping your equipment running efficiently, reliably, and safely, season after season. Contact us today for pricing, technical specifications, and delivery information on the PTO shaft for New Holland Discbine models that match your operation.<\/p>\n
![\"\u00c9quipement](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/03\/Factory-Equipment-3.webp\")
![\"\u00c9quipement](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/03\/Factory-Equipment-1.webp\")
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FAQ<\/h2>\n
Q: What PTO shaft configuration does the New Holland Discbine H7450 require?<\/strong>
\nA: The H7450 is a 1000 RPM center-pivot model requiring 90 PTO horsepower. It uses a 55N Double 80\/50 CV primary main shaft for standard configurations, or a 55N standard shaft when used with the optional swivel hitch tongue. The secondary shaft position uses a 55N standard configuration. There is no intermediate shaft on the H7450. The implement input shaft is typically a 1.375-21 spline. When ordering, confirm whether your machine has the standard drawbar hitch or the optional swivel hitch, as this determines the primary shaft specification. Our technical team can confirm the exact part numbers based on your serial number if needed.<\/p>\nQ: What is the difference between a 540 PTO shaft and a 1000 RPM PTO shaft for disc mowers?<\/strong>
\nA: A 540 PTO shaft is designed for tractors with a 540 RPM PTO output, typically used with implements requiring up to around 65-80 PTO horsepower, such as the H7220, H7230, H7320, and H7330 Discbine models. A 1000 PTO shaft operates at 1000 RPM and handles higher power densities in the same shaft diameter, making it the standard for high-output implements requiring 90-100 HP or more, as used on the H7450 through H7560 series. The spline count and shaft profile differ between 540 and 1000 RPM specifications, so these shafts are not interchangeable. Running a 540-designed shaft at 1000 RPM will cause catastrophic failure due to excessive centrifugal forces on the cross-kits and tubing. Always match the shaft specification to the tractor PTO speed setting in actual use.<\/p>\nQ: Can I use a CMN Transmission shaft as a direct replacement for Weasler PTO shaft on my Discbine?<\/strong>
\nR : Oui. CMN Transmission fabrique nos arbres de prise de force pour faucheuses-batteuses \u00e0 disques New Holland en respectant scrupuleusement les dimensions des arbres d'origine Weasler mont\u00e9s sur les mod\u00e8les de la s\u00e9rie H. Tous les profils de cannelures, diam\u00e8tres d'al\u00e9sage, dimensions des douilles de la traverse et longueurs des tubes t\u00e9lescopiques sont fabriqu\u00e9s selon les m\u00eames dimensions de r\u00e9f\u00e9rence que les transmissions Weasler d'origine. Ainsi, nos arbres se boulonnent directement sur les supports et les bagues de verrouillage existants de votre machine, sans aucune adaptation ni modification. Ce principe de montage direct s'applique \u00e9galement aux arbres d'origine Bondioli et Pavesi. En cas de doute concernant les sp\u00e9cifications adapt\u00e9es \u00e0 l'ann\u00e9e de production de votre machine, veuillez contacter notre \u00e9quipe technique en lui communiquant votre num\u00e9ro de s\u00e9rie avant de passer commande.<\/p>\nQ: What is an FNT34 combination clutch and why is it important on the discbine PTO shaft?<\/strong>
\nA: The FNT34 is a specific type of combination clutch that integrates both a friction disc clutch and an overrunning (freewheeling) ratchet clutch in a single compact housing, mounted on the secondary PTO drive shaft for discbine. The friction element limits the peak torque that can be transmitted through the shaft to a calibrated maximum, protecting the cutterbar gearboxes and U-joints from sudden overload impacts caused by rock strikes or foreign object hits. The overrunning element prevents the high rotational inertia stored in the spinning disc cutterbar from back-driving the tractor transmission when the PTO is disengaged or the engine is suddenly unloaded. Both protection mechanisms are critical for reliable, cost-effective operation of the New Holland Discbine, and the FNT34 assembly should be inspected and serviced at the intervals specified in the implement operator manual to maintain correct slip torque calibration.<\/p>\nQ: What spline size does the New Holland Discbine tractor-side PTO stub use?<\/strong>
\nA: The New Holland Discbine range accommodates two common tractor PTO spline sizes: the 1.375-inch diameter 21-spline (also written as 1-3\/8 inch x 21 spline or 1.375-21), which is standard on most tractors in the 65-80 HP class used with H7220, H7230, H7320, and H7330 models; and the 1.750-inch diameter 20-spline (also written as 1-3\/4 inch x 20 spline or 1.750-20), which is used on larger tractors in the 90-100 HP class running the H7450 through H7560. The implement input shaft is most commonly a 1.375-21 spline across all models. If your tractor has an unusual PTO shaft adapter requirement between these standard sizes, CMN Transmission can supply the appropriate adapter coupling as part of the shaft assembly order.<\/p>\nQ: What is a CAT 6 Constant Velocity PTO shaft and why does the Discbine need it?<\/strong>
\nA: Category 6 (CAT 6) refers to the torque and size class of the heavy duty PTO shaft, capable of transmitting up to approximately 3,000 Nm of torque in the primary shaft position. The Constant Velocity (CV) joint design within this shaft uses a double-joint assembly that maintains identical input and output angular velocity regardless of the deflection angle, which is fundamentally different from standard single Cardan joint designs that produce cyclical speed variation at any working angle. The Discbine requires CV technology on the main shaft because the center-pivot and swivel-hitch tongue designs allowthe machine to articulate far beyond the operating angle range of a standard single Cardan shaft. Without a CV joint, running a discbine at extreme tongue angles would generate severe vibration, rapid U-joint wear, and unacceptable noise levels at both 540 and 1000 RPM operating speeds.<\/p>\nQ: How do I know when my disc mower PTO shaft needs to be replaced?<\/strong>
\nA: The key signs that your PTO shaft for disc mower requires replacement or major service include: noticeable vibration or shaking in the machine at normal operating RPM; clicking, knocking, or grinding noise from the shaft area; visible radial play or roughness in the PTO shaft u joint cross-kit when rotated by hand; visible cracking, bending, or denting in the PTO shaft tubing; a slip clutch that no longer holds under normal cutting load (indicating worn friction disc linings); difficulty telescoping the inner and outer shaft profiles; or a seized, cracked, or non-rotating PTO shaft guard. Annual inspection at the start of the cutting season and after any known impact events is recommended. Replacing worn components proactively during the off-season is far less costly than an emergency breakdown mid-harvest.<\/p>\nQ: Can CMN Transmission manufacture custom PTO shaft lengths for non-standard installations?<\/strong>
\nA: Yes. CMN Transmission offers a full custom PTO shaft manufacturing service for applications where standard catalog lengths do not fit the tractor-implement geometry, for modified machines with altered hitch heights, or for non-standard implement input shaft configurations. To order a custom shaft, provide us with the extended length, compressed length, tractor-side spline specification, implement-side yoke interface dimensions, maximum operating angle, required torque rating, and clutch type preference. Our engineering team will calculate the correct telescoping profile overlap, tube diameter, and wall thickness for the application and provide a dimensional drawing for approval before production. Custom PTO shaft dimensions are typically available within 10-15 business days from drawing approval, and we accept custom OEM orders for agricultural equipment manufacturers requiring private-label driveline solutions as well.<\/p>\nQ: What is the difference between Category 5 and Category 6 PTO shaft categories?<\/strong>
\nA: PTO shaft sizes are classified into categories based on torque capacity and outer tube diameter. Category 5 (CAT 5) shafts are rated for approximately 1,800 Nm of continuous torque and use a specific cross-kit and tube profile sized for mid-range power applications, making them appropriate for the secondary and intermediate shaft positions on the Discbine. Category 6 (CAT 6) shafts are larger and rated for approximately 3,000 Nm of continuous torque with a correspondingly larger tube outer diameter and cross-kit size, making them appropriate for the main primary shaft position that must handle the full tractor PTO output in high-HP applications. Using a CAT 5 shaft in a position that requires a CAT 6 will result in shaft failure under normal operating loads. CMN Transmission clearly identifies the correct category for each shaft position in our Discbine-specific product listings.<\/p>\nQ: Does the PTO shaft guard meet CE safety standards and what maintenance does it require?<\/strong>
\nA: Yes. The complete PTO shaft cover supplied with CMN Transmission Discbine drivelines is designed and tested to comply with CE Machinery Directive requirements for rotating shaft guards, including minimum coverage length, radial clearance from the rotating shaft, end cap design, and chain anchor point strength. The guard tube should be inspected visually at each grease service interval for cracks, splits, or brittleness in the plastic, which can develop with age and UV exposure. Confirm that the guard rotates freely on its bearing relative to the shaft (it must not turn with the shaft) and that both anchor chains remain correctly attached. A worn bearing inside the guard end cap that allows the guard to rotate with the shaft must be replaced promptly, as the resulting friction will quickly destroy the guard and expose the rotating driveline.<\/p>\n![\"Arbre](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-22.webp\")
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Avis clients<\/h2>\n
Marcus Hollingsworth, directeur de ferme, \u00c9tats-Unis<\/strong>
\n\u00ab\u00a0Nous utilisons une H7450 sur notre exploitation de luzerne de 73 hectares dans l'Ohio depuis bient\u00f4t sept ans. L'arbre principal d'origine Weasler a fini par user le joint homocin\u00e9tique apr\u00e8s quatre saisons de coupe compl\u00e8tes. J'ai command\u00e9 le remplacement CAT 6 chez CMN Transmission un mardi et je l'ai re\u00e7u d\u00e8s le jeudi. L'ajustement \u00e9tait parfait\u00a0: la cannelure 1.750-20 s'est ins\u00e9r\u00e9e sans probl\u00e8me et s'est verrouill\u00e9e instantan\u00e9ment. Nous avons maintenant plus de 200 heures d'utilisation avec le nouvel arbre, r\u00e9parties sur trois coupes, et il n'a pos\u00e9 aucun souci. La qualit\u00e9 du carter est \u00e9galement nettement sup\u00e9rieure \u00e0 celle de l'original, honn\u00eatement. Je commanderais \u00e0 nouveau chez CMN les yeux ferm\u00e9s.\u00a0\u00bb<\/p>\nKlaus Bergmann, agriculteur, Allemagne<\/strong>
\n\u00ab Nous utilisons une moissonneuse-batteuse H7560 sur notre exploitation en Bavi\u00e8re et avions besoin en urgence d'un arbre de remplacement en pleine saison des r\u00e9coltes. CMN Transmission disposait en stock de l'ensemble complet d'arbres : arbre principal, arbre interm\u00e9diaire 55N avec embrayage et arbre secondaire. La livraison en Allemagne n'a pris que quatre jours ouvrables. L'embrayage combin\u00e9 FNT34 est fabriqu\u00e9 avec une pr\u00e9cision absolue et la limite de couple est parfaitement lin\u00e9aire. Pour notre application de 100 ch \u00e0 1\u00a0000 tr\/min, c'est exactement ce qu'il nous faut. Le rapport qualit\u00e9-prix est nettement sup\u00e9rieur \u00e0 celui de la pi\u00e8ce d'origine propos\u00e9e par le concessionnaire. \u00bb<\/p>\nThomas Whitaker, entrepreneur agricole, Australie
\n<\/strong> \u00ab Je dirige une entreprise de travaux agricoles dans l'\u00c9tat de Victoria, en Australie, et j'utilise deux moissonneuses-batteuses H7460 pour plusieurs exploitations laiti\u00e8res. Lorsque l'on encha\u00eene les coupes sur diff\u00e9rentes propri\u00e9t\u00e9s, le moindre temps d'arr\u00eat machine est inacceptable. CMN Transmission est mon fournisseur privil\u00e9gi\u00e9 de pi\u00e8ces pour arbres de prise de force depuis trois ans. Les arbres secondaires standard 55N que j'ai command\u00e9s la saison derni\u00e8re \u00e9taient pr\u00e9-graiss\u00e9s, parfaitement dimensionn\u00e9s et l'embrayage \u00e9tait pr\u00e9r\u00e9gl\u00e9 correctement. J'ai donc pu les installer et travailler imm\u00e9diatement, sans aucun r\u00e9glage. Ce type de fiabilit\u00e9, simple et efficace, est exactement ce dont un entrepreneur a besoin. J'ai recommand\u00e9 CMN \u00e0 deux autres entrepreneurs de ma r\u00e9gion, et ils sont d\u00e9sormais clients r\u00e9guliers. \u00bb<\/p>\nDavid Hartley, producteur de foin, Canada
\n<\/strong> \u00ab Nous utilisons une H7230 depuis 10 ans sur notre exploitation de foin mixte en Ontario. La machine a connu trois arbres de prise de force diff\u00e9rents durant cette p\u00e9riode, dont deux mod\u00e8les Weasler on\u00e9reux du concessionnaire New Holland. Lorsque le deuxi\u00e8me a d\u00fb \u00eatre remplac\u00e9, j'ai fait appel \u00e0 CMN Transmission sur les conseils d'un voisin. L'arbre principal \u00e0 joint homocin\u00e9tique 55N et l'arbre secondaire \u00e0 double joint homocin\u00e9tique H8 sont arriv\u00e9s bien emball\u00e9s et en excellent \u00e9tat. L'arbre principal entame maintenant sa troisi\u00e8me saison de fauche compl\u00e8te sans aucun probl\u00e8me. C\u00f4t\u00e9 prix, j'\u00e9conomise environ 35\u00a040% par rapport au prix du concessionnaire. L'\u00e9quipe technique a r\u00e9pondu \u00e0 ma question concernant le dimensionnement des cannelures le jour m\u00eame par courriel, ce que j'ai beaucoup appr\u00e9ci\u00e9. \u00bb<\/p>\nJean-Pierre Morin, agriculteur, France<\/strong>
\n\u00ab Notre exploitation agricole du Loiret utilise une H7330 depuis 2017. L'arbre de prise de force Bondioli et Pavesi d'origine a rendu l'\u00e2me apr\u00e8s six saisons, et les d\u00e9lais de livraison du concessionnaire \u00e9taient inacceptables en pleine saison. CMN Transmission nous a exp\u00e9di\u00e9 le kit de remplacement standard 55N depuis la Cor\u00e9e en moins d'une semaine. La qualit\u00e9 de fabrication est tout \u00e0 fait comparable \u00e0 celle de la pi\u00e8ce d'origine\u00a0: les joints de cardan tournent sans jeu et le profil t\u00e9lescopique coulisse parfaitement. Le service client s'est montr\u00e9 tr\u00e8s professionnel\u00a0; ils parlent bien anglais et ont r\u00e9pondu \u00e0 toutes nos questions techniques. Un fournisseur fiable que nous recommandons \u00e0 nos confr\u00e8res agriculteurs. \u00bb<\/p>\nJames MacIntyre, propri\u00e9taire d'une ferme, Nouvelle-Z\u00e9lande<\/strong>
\n\u00ab Nous exploitons une importante ferme d'ensilage de ray-grass dans l'\u00cele du Sud de la Nouvelle-Z\u00e9lande avec trois faucheuses \u00e0 disques : une H7450 et deux H7550. L'approvisionnement en pi\u00e8ces de prise de force \u00e9tait auparavant un v\u00e9ritable casse-t\u00eate logistique, compte tenu de notre \u00e9loignement des principaux fournisseurs. CMN Transmission a compl\u00e8tement chang\u00e9 la donne. Leur syst\u00e8me de commande en ligne est clair, le s\u00e9lecteur d'arbre sp\u00e9cifique au mod\u00e8le a facilit\u00e9 le choix de la configuration 55N Double CV adapt\u00e9e \u00e0 la H7450, et la livraison est arriv\u00e9e \u00e0 Auckland en six jours ouvrables. Les trois arbres command\u00e9s ces deux derni\u00e8res saisons se sont mont\u00e9s du premier coup, sans aucune modification. Un produit fiable, un bon prix et une rapidit\u00e9 de livraison qui respecte vraiment le planning des agriculteurs. \u00bb<\/p>\nCarlos Eduardo Mendes, producteur rural, Br\u00e9sil<\/strong>
\n\u00ab Nous utilisons une moissonneuse-batteuse H7460 dans le Rio Grande do Sul pour la r\u00e9colte du ray-grass et du tr\u00e8fle destin\u00e9s au foin et \u00e0 l'ensilage. Lorsque l'arbre de transmission a cass\u00e9 en pleine moisson, j'ai contact\u00e9 CMN Transmission en urgence. Ils m'ont r\u00e9pondu en moins de deux heures avec les sp\u00e9cifications exactes pour l'arbre 55N avec embrayage combin\u00e9 pour le mod\u00e8le 1000 tr\/min. Le produit est arriv\u00e9 bien emball\u00e9 et en parfait \u00e9tat. La qualit\u00e9 d'usinage est nettement sup\u00e9rieure \u00e0 celle de l'arbre standard que nous utilisions auparavant\u00a0: aucun jeu dans les brides et le profil t\u00e9lescopique se d\u00e9place sans r\u00e9sistance. Nous allons certainement en racheter et l'avons d\u00e9j\u00e0 recommand\u00e9 \u00e0 d'autres producteurs de la r\u00e9gion. \u00bb<\/p>\nRichard Pemberton, directeur de ferme, Royaume-Uni
\n<\/strong> \u00ab Je g\u00e8re une exploitation agricole mixte de 200 hectares dans le Shropshire et nous utilisons une faucheuse-batteuse H7320 depuis des ann\u00e9es avec notre prise de force 540. Ce que j'appr\u00e9cie le plus chez CMN Transmission, c'est leur expertise technique, et pas seulement leurs prix. Lorsque j'h\u00e9sitais entre l'arbre de transmission 35N CV et l'arbre carr\u00e9 35N pour ma faucheuse-batteuse secondaire, je les ai appel\u00e9s et j'ai parl\u00e9 \u00e0 un expert qui connaissait parfaitement la gamme Discbine. Il m'a guid\u00e9 pas \u00e0 pas dans l'identification du produit et a confirm\u00e9 la sp\u00e9cification ad\u00e9quate en cinq minutes. L'arbre est arriv\u00e9 deux jours plus tard et s'est install\u00e9 sans probl\u00e8me. C'est cette combinaison de connaissances produits et d'efficacit\u00e9 logistique qui me fid\u00e9lise. Depuis, j'ai command\u00e9 s\u00e9par\u00e9ment le syst\u00e8me d'embrayage \u00e0 friction comme pi\u00e8ce de rechange. \u00bb<\/p>\nAlejandro Ruiz, propri\u00e9taire, Argentine<\/strong>
\n\u00ab\u00a0Nous utilisons une H7230 dans notre entreprise de services agricoles de la province de Buenos Aires, principalement pour la fauche de la luzerne et l'entretien des p\u00e2turages am\u00e9lior\u00e9s. Apr\u00e8s cinq saisons, l'arbre de prise de force d'origine \u00e9tait us\u00e9 au niveau du joint de cardan, et les prix pratiqu\u00e9s par le concessionnaire local \u00e9taient prohibitifs. CMN Transmission nous a propos\u00e9 l'arbre de remplacement CV 55N exact \u00e0 un prix inf\u00e9rieur de 40% \u00e0 celui du constructeur. La livraison est arriv\u00e9e \u00e0 Buenos Aires en huit jours ouvrables, tout \u00e9tait conforme et l'emballage \u00e9tait intact. Le montage \u00e9tait parfait, sans adaptateur. Nous avons maintenant termin\u00e9 deux saisons de fauche compl\u00e8tes sans aucun probl\u00e8me. Le service client est tr\u00e8s r\u00e9actif et efficace par e-mail.\u00a0\u00bb<\/p>","protected":false},"excerpt":{"rendered":"CMN Transmission manufactures high-quality PTO shafts for New Holland Discbine models H7220, H7230, H7320, H7330, H7450, H7460, H7550, and H7560 disc mower-conditioners. Each disc mower PTO shaft is engineered as a direct replacement for the original Weasler or Bondioli & Pavesi factory-installed units, with no modifications required for installation. Whether you operate a compact 65 HP side-pull H7220 or a heavy-duty 100 HP center-pivot H7560, our agricultural PTO shaft lineup covers the full power range from 540 RPM entry-level models right through to 1000 RPM high-output configurations.<\/p>","protected":false},"featured_media":6981,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[222,262],"product_tag":[232,228,242,234,264,233,226,229,263,265,235,243,225,230,231,224],"class_list":{"0":"post-6998","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-pto-shafts","7":"product_cat-pto-shaft-for-discbine","8":"product_tag-1000-pto-shaft","9":"product_tag-540-pto-shaft","10":"product_tag-agricultural-pto-shaft","11":"product_tag-custom-pto-shaft","12":"product_tag-disc-mower-pto-shaft","13":"product_tag-heavy-duty-pto-shaft","14":"product_tag-pto-drive-shafts","15":"product_tag-pto-driveline-shaft","16":"product_tag-pto-shaft-for-disc-mower","17":"product_tag-pto-shaft-for-discbine","18":"product_tag-pto-shaft-for-tractor","19":"product_tag-pto-shaft-manufacturers","20":"product_tag-pto-shafts","21":"product_tag-pto-shafts-for-sale","22":"product_tag-tractor-pto-drive-shaft","23":"product_tag-tractor-pto-shaft","25":"first","26":"instock","27":"shipping-taxable","28":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product\/6998","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/comments?post=6998"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/media\/6981"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/media?parent=6998"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_brand?post=6998"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_cat?post=6998"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/fr\/wp-json\/wp\/v2\/product_tag?post=6998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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