{"id":6992,"date":"2026-04-28T03:00:34","date_gmt":"2026-04-28T03:00:34","guid":{"rendered":"https:\/\/korea-transmission.com\/?post_type=product&p=6992"},"modified":"2026-04-28T08:31:35","modified_gmt":"2026-04-28T08:31:35","slug":"pto-shaft-for-new-holland-discbine-411-disc-mower","status":"publish","type":"product","link":"https:\/\/korea-transmission.com\/id\/produk\/pto-shaft-for-new-holland-discbine-411-disc-mower\/","title":{"rendered":"PTO Shaft for New Holland Discbine 411 Disc Mower"},"content":{"rendered":"

Reliable PTO Shaft for New Holland Discbine Models<\/h2>\n

PTO Shaft for New Holland Discbine Model: 411 Disc Mower<\/strong><\/p>\n

The PTO shaft for New Holland Discbine 411 disc mower from CMN Transmission is a factory-grade, heavy-duty tractor PTO drive shaft engineered to deliver maximum power, operational reliability, and extended field life. Built to the CAT 6 constant-velocity standard and matched to the 55N Weasler specification, this PTO drive shaft for discbine applications incorporates a double CV design: an 80-degree wide-angle CV joint on the tractor end for smooth, vibration-free rotation even at extreme articulation angles, and a 50-degree CV joint on the implement end for precise power delivery into the discbine’s input gearbox. The standard configuration accepts a 1-3\/8″ x 21 spline tractor connection and a 1-1\/2″ x 23 spline implement connection, with a 1-3\/4″ x 20 spline tractor variant also available for higher-horsepower tractor models. Whether you are working in high-volume alfalfa stands, dense timothy, or mixed grass-legume swards, this disc mower PTO shaft is built to keep pace with the most demanding hay and forage harvesting schedules.<\/p>\n

As a direct replacement of Weasler PTO shaft hardware on the New Holland 411, this PTO shaft for discbine is precision-machined to OEM-equivalent dimensional tolerances using advanced CNC equipment at CMN’s Korea-based production facility and its network of over 10 co-manufacturing partners. Every agricultural PTO shaft is heat-treated for enhanced surface hardness, dynamically balanced to minimize vibration at full operating speed, and supplied with a full-length polyethylene PTO shaft guard and safety cone for operator protection. Compared with dealer-channel OEM replacements, CMN’s factory-direct pricing structure removes the multi-tier dealer markup, making it possible to source a fully certified, ISO9001-compliant heavy duty PTO shaft at a significantly lower total cost. Custom PTO shaft length and bespoke yoke configurations are available on request for non-standard tractor and implement combinations, making this an ideal solution for OEM integrators, agricultural dealers, and working farms worldwide.<\/p>\n

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Poros Utama: CAT 6 Kecepatan Konstan<\/h2>\n

\"PTO<\/p>\n

Original equipment is 55N Weasler 80 degrees on the tractor side and a 50-degree CV on the discbine. Input shafts are usually 1.50\u2033 x 23 splines.<\/p>\n\n\n\n\n\n\n\n\n
Traktor<\/strong><\/td>\nMelaksanakan<\/strong><\/td>\nKeterangan<\/strong><\/td>\n<\/tr>\n
1.375-21<\/td>\n1.5\u2033 x 23 spline<\/td>\n55N 80\u00d750 Double CV<\/td>\n<\/tr>\n
none<\/td>\n1.5\u2033 x 23 spline<\/td>\n55N 50 degree CV half(implement)<\/td>\n<\/tr>\n
1.375-21<\/td>\nnone<\/td>\n55N 80 degree CV half(tractor)<\/td>\n<\/tr>\n
1.750-20<\/td>\nnone<\/td>\n55N 80 degree CV half(tractor)<\/td>\n<\/tr>\n
none<\/td>\n1.375-21<\/td>\n55N 50 degree CV clamp yoke only<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Spesifikasi Teknis<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpesifikasi<\/th>\n<\/tr>\n<\/thead>\n
Fit Model<\/td>\nNew Holland Discbine 411 Disc Mower<\/td>\n<\/tr>\n
Main Shaft Series<\/td>\nCAT 6 Constant Velocity (CV)<\/td>\n<\/tr>\n
OEM Equivalent (Weasler)<\/td>\n55N Series – Replacement of Weasler PTO shaft assembly<\/td>\n<\/tr>\n
Tractor-End Joint<\/td>\n55N Wide-Angle CV, 80-degree articulation<\/td>\n<\/tr>\n
Implement-End Joint<\/td>\n55N CV Joint, 50-degree articulation<\/td>\n<\/tr>\n
Spline Traktor Standar<\/td>\n1-3\/8″ x 21 spline (1.375-21)<\/td>\n<\/tr>\n
Alternative Tractor Spline<\/td>\n1-3\/4″ x 20 spline (1.750-20)<\/td>\n<\/tr>\n
Standard Implement Spline<\/td>\n1-1\/2″ x 23 spline (1.50″ x 23)<\/td>\n<\/tr>\n
PTO Speed Compatibility<\/td>\n540 PTO shaft and 1000 PTO shaft (RPM)<\/td>\n<\/tr>\n
Pelindung Keamanan<\/td>\nFull-length polyethylene PTO shaft guard + safety cone included<\/td>\n<\/tr>\n
Perawatan Permukaan<\/td>\nYellow powder coat + heat-treated alloy steel tubes<\/td>\n<\/tr>\n
Sertifikasi<\/td>\nISO9001, CE, TS16949<\/td>\n<\/tr>\n
Custom Options<\/td>\nCustom PTO shaft length, yoke type, spline profile – OEM\/ODM supported<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Features of PTO Shaft for New Holland 411 Disc Mower<\/h2>\n

1. CAT 6 Double CV Design for Maximum Articulation
\nThe CAT 6 constant-velocity configuration positions an 80-degree wide-angle CV joint on the tractor PTO output end and a 50-degree CV joint on the discbine input end. This dual-CV architecture eliminates the cyclic torque spikes and torsional vibration that destroy standard U-joint shafts during tight headland turns, slope mowing, and offset cutting passes. The result is noticeably smoother power delivery at both 540 and 1000 RPM PTO speeds, reduced wear on the tractor gearbox, and a longer effective service life for all connected drivetrain components. Ideal for offset and bent-tongue discbine configurations where articulation angles frequently exceed 30 degrees.<\/p>\n

2. Precision-Machined Alloy Steel Tubes and Yokes
\nThe PTO shaft tubing on this unit is drawn from high-grade alloy steel and precision-machined to OEM-equivalent dimensional tolerances using advanced CNC turning centers. Each PTO shaft yoke and cross-and-bearing assembly undergoes induction hardening and shot-blasting to maximize surface fatigue resistance. The telescoping inner and outer profiles are profiled to match OEM PTO shaft dimensions exactly, ensuring slip-fit assembly without shimming or adapter collars. Heavy-duty snap rings and retention clips prevent axial disengagement even under shock-load events. This commitment to dimensional precision means the shaft slides straight onto your tractor PTO stub and discbine input without any modification.<\/p>\n

3. Full-Length Polyethylene PTO Shaft Guard Included
\nEvery unit ships with a complete PTO shaft cover and PTO shaft guard assembly manufactured from high-density polyethylene. The guard fully encloses the rotating shaft and both CV joints from end to end, satisfying CE and OSHA PTO safety requirements without additional purchases. Safety cones at both ends deflect loose material and protect bystanders from contact with the spinning components. The guard profile is designed with adequate radial clearance to avoid contact with the shaft at any rated articulation angle, preventing the heat buildup and premature wear that occur when poorly designed guards rub against shaft bodies during turning.<\/p>\n

4. Shear Bolt Overload Protection System
\nThis shear bolt PTO shaft configuration incorporates precision-rated PTO shaft shear bolt interfaces at the yoke connections, engineered to fracture at a predetermined torque threshold before catastrophic damage can propagate to the tractor’s PTO gearbox or the discbine’s input shaft and bevel gear set. The shear bolt seats are standardized so replacement PTO shaft parts are readily available worldwide. Unlike friction-clutch systems that can slip unpredictably during the mowing season, the shear bolt method provides a clearly defined, mechanically reliable overload event that the operator can identify, remedy, and reset in the field within minutes using a basic wrench.<\/p>\n

5. ISO9001 and CE Certified Quality Assurance
\nCMN Transmission holds ISO9001, CE, and TS16949 certifications, and every tractor PTO shaft produced undergoes a multi-stage quality inspection protocol covering raw material certification, dimensional verification, dynamic balance testing, torque rating validation, and surface finish inspection before shipment. These standards are not merely administrative credentials; they reflect a production culture of documented process control and measurable output quality. For international buyers and fleet equipment managers, certified compliance reduces procurement risk, simplifies customs documentation, and provides the documentary evidence required for warranty claims and insurance purposes. Certification records and test reports are available upon request for every batch order.<\/p>\n

6. Factory-Direct Pricing and Custom PTO Shaft Options
\nBecause CMN Transmission is an integrated manufacturer and trading company, buyers receive custom PTO shaft manufacturing support at factory-direct prices with no dealer-chain markups. Non-standard PTO shaft sizes and PTO shaft dimensions are accommodated through our in-house engineering team, which provides dimensional drawings, torque calculations, and prototype approval within days. This customization capability makes CMN the preferred supplier for agricultural equipment OEMs requiring production-volume tractor PTO shafts built to proprietary specifications, as well as for repair depots that need a single versatile PTO shaft adapter range to cover multiple machine models across their service fleet.<\/p>\n

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Working Principle of Disc Mower PTO Shaft<\/h2>\n

The PTO drive shaft on the New Holland Discbine 411 serves as the sole mechanical link between the tractor’s power take-off output stub and the disc mower’s input gearbox. When the tractor operator engages the PTO, rotary power at either 540 or 1000 RPM is transmitted through the tractor stub shaft into the tractor PTO drive shaft’s yoke assembly, then axially along the telescoping PTO shaft tube, and out through the implement yoke into the discbine’s bevel gearbox. The telescoping inner and outer shaft profiles allow the overall PTO shaft length to vary dynamically as the hitch height changes during field operation and during transport, ensuring continuous torque transmission without binding or disengagement regardless of the vertical position of the implement relative to the tractor.<\/p>\n

Conventional single-joint PTO shaft u joint drivelines suffer from a fundamental mechanical limitation: when the input and output shafts are not co-axial (i.e., when the shaft runs at an angle), the angular velocity of the output shaft oscillates twice per revolution. At typical disc mower operating speeds, this cyclic velocity variation generates intense torsional pulsations that stress the drivetrain components, produce audible vibration, and dramatically reduce the service life of connected PTO shaft universal joint assemblies, gearbox input bearings, and even tractor PTO clutch packs.<\/p>\n

The CAT 6 double CV design on this discbine PTO shaft eliminates this problem entirely. The wide-angle 80-degree CV joint on the tractor side uses a ball-and-cage mechanism that maintains a perfectly constant output velocity regardless of the angle between the tractor PTO stub and the shaft centerline, even during sharp headland turns. This is especially critical for the New Holland 411, which uses a bent-tongue or offset hitch configuration that routinely places the PTO driveline shaft at extreme angles during in-field maneuvering. The 50-degree CV joint at the implement end provides a second velocity-equalization stage at the discbine connection, ensuring that the disc mower’s input gearbox receives smooth, constant-velocity torque even during lateral float movements of the cutter head over uneven ground.<\/p>\n

When the disc mower encounters an overload event such as striking a submerged rock, a hardwood stump, or an accumulation of material wrapped around the disc assembly, the instantaneous torque spike in the driveline can reach several times the rated operating torque within milliseconds. Without a protective device, this peak torque would shear the input shaft of the discbine gearbox, fracture the tractor PTO output shaft, or strip the splines from the PTO shaft yoke. The shear pin PTO shaft arrangement on this unit addresses this risk by incorporating pre-calculated shear elements that sacrifice themselves at a defined torque limit, absorbing the energy of the impact and protecting all downstream drivetrain components from damage. Replacement PTO shaft shear bolt kits are inexpensive and can be installed in the field in under five minutes, getting the machine back to work quickly after an overload event.<\/p>\n

The PTO shaft u joint cross-and-bearing assemblies are packed with high-performance grease at the factory and fitted with grease nipples (zerks) for periodic re-lubrication in the field. The CV ball-and-cage elements operate in a sealed grease reservoir that provides long-interval maintenance capability. The telescoping PTO shaft tubing profile is coated with a low-friction polymer lining that maintains smooth sliding action under load and prevents the tube seizure that can occur with uncoated profiles when dirt or crop debris infiltrates the telescope joint during field operation.<\/p>\n

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Bidang Aplikasi<\/h2>\n

1. Hay Harvesting<\/strong>
\nThe primary use case for this disc mower PTO shaft. 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, vibration-free PTO driveline shaft for disc mower operation is essential for maintaining consistent cutter disc speed across the full cutting pass, ensuring clean, even cuts that maximize forage quality and minimise leaf shatter in high-value crops such as alfalfa and clover.<\/p>\n

2. Forage Harvesting<\/strong>
\nMowing high-value crops like alfalfa, clover, and ryegrass at the correct stage of maturity requires precise, consistent cutter disc speed to maximize nutritional content for livestock feed, whether the crop is stored as dry hay or green chop. The constant-velocity design of this poros PTO pertanian<\/strong><\/a> maintains even disc speed across the full PTO speed range, reducing leaf loss and mechanical damage to the plant material, which directly preserves the protein and digestibility values that determine the commercial value of the harvested forage crop.<\/p>\n

3. Silage Production<\/strong>
\nCutting crops at higher moisture levels for fermented silage storage in bunkers, pits, or wrapped bales requires fast, even cutting to ensure uniform fermentation throughout the clamp. A heavy-duty tractor PTO shaft that transmits power smoothly and without interruption is essential for maintaining the high field speeds needed during the narrow harvesting window that exists between the correct crop moisture content and field deterioration. The shear bolt protection on this unit also prevents costly gearbox damage when processing dense, high-moisture crop stands.<\/p>\n

4. Pengelolaan Padang Rumput<\/strong>
\nTopping and trimming pastures to control rank or stemmy growth, remove seed heads, and encourage fresh, palatable re-growth for grazing animals represents a regular seasonal workload for mixed livestock farms. In pasture topping applications, the mower frequently encounters uneven terrain, buried stones, and surface debris that would destroy a standard PTO drive shaft. The shear bolt overload protection on this PTO shaft for New Holland discbine hardware absorbs impact events safely and returns the machine to work within minutes, protecting both the mower gearbox and the tractor PTO output.<\/p>\n

5. Cover Crop Termination<\/strong>
\nCutting down winter cover crops such as cereal rye, vetch, or crimson clover ahead of the planting season leaves a protective biomass mulch layer that suppresses weeds and retains soil moisture. Cover crop termination with a disc mower is demanding work because the crop canopy is typically dense and the machine must operate at field speed to complete the task before planting windows close. A reliable 1000 PTO shaft or 540 PTO shaft that sustains full cutter disc speed without vibration-induced slowdowns or component failures is critical for maintaining the daily output needed during this compressed seasonal operation period.<\/p>\n

6. Roadside and 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 places particular demands on the PTO driveline. The wide-angle CV joints on this PTO shaft for disc mower allow the operator to work the machine at steep lateral offsets and in tight turn-around situations without inducing the vibration and power interruption that occur with straight-shaft designs. The robust PTO shaft guard and safety cone assembly also provides the enclosed, compliant driveline protection required in roadside and public-access environments under local safety codes.<\/p>\n

\"PTO<\/p>\n

How to Install PTO Shaft on New Holland Discbine<\/h2>\n

1. Safety and Pre-Installation Checks
\nBefore beginning any PTO shaft installation work, disengage the tractor PTO, shut down the engine, and remove the key. Allow any rotating components to come to a complete stop. Confirm that your replacement tractor PTO drive shaft matches the original unit by comparing tractor spline count and diameter (1-3\/8″ x 21 or 1-3\/4″ x 20 spline) against the tractor PTO stub, and by verifying the implement spline (1-1\/2″ x 23 spline) against the discbine’s input shaft. Inspect the tractor PTO stub and implement input shaft for corrosion, spline wear, or damage before proceeding. Clean and lightly grease both connection points.<\/p>\n

2. Verify PTO Shaft Length Before Mounting
\nWith the tractor hitched to the New Holland 411 discbine in the working position, measure the distance between the tractor PTO stub face and the implement input shaft face. Confirm that the compressed PTO shaft length allows at least 150mm of telescoping overlap between the inner and outer PTO shaft tubing at minimum hitch distance, and that the shaft does not bottom out when the hitch is raised to transport position. If the measured PTO shaft dimensions are outside the rated range, contact CMN Transmission for a custom-length replacement. Incorrect shaft length is one of the most common causes of premature driveline failure.<\/p>\n

3. Install the Implement-End Yoke First
\nBegin by sliding the implement-side PTO shaft yoke (1-1\/2″ x 23 spline) onto the discbine’s input shaft. Push the yoke fully onto the spline until the snap ring or locking pin clicks audibly into the circumferential groove on the input shaft. Confirm engagement by attempting to pull the yoke rearward: it should resist removal firmly without applying the release button. Thread the PTO shaft guard anchor chain around the discbine’s input housing to prevent the guard from co-rotating with the shaft during operation. Failure to anchor the guard chain is a safety violation and will result in guard damage and wrap hazard.<\/p>\n

4. Connect the Tractor-End Yoke and Anchor Guard Chain
\nSlide the tractor-side yoke onto the tractor PTO stub shaft, aligning the splines carefully and pushing the yoke home until the snap ring engages its groove. For the wide-angle 80-degree CV tractor-end, ensure the CV assembly is oriented so that the wide-angle articulation provides clearance in the direction of maximum tractor-implement articulation during tight turns. Anchor the tractor-end guard chain securely to the tractor drawbar or rear linkage support point. Test the anchor chain tension by pulling the guard laterally; it should be tight enough to prevent rotation but allow the CV assembly to pivot freely.<\/p>\n

5. Install Shear Bolts and Verify Fit
\nInsert the rated PTO shaft shear bolt hardware at both yoke interfaces and tighten to the torque specification listed on the shaft label. Do not substitute alternative grade fasteners for the OEM-specified shear bolt PTO shaft elements; using higher-grade bolts will prevent the overload protection system from functioning and will shift the failure point to the more expensive downstream drivetrain components. Rotate the fully connected PTO driveline shaft by hand through at least two full turns to confirm there is no binding, no guard contact, and smooth telescoping action throughout the range of hitch movement.<\/p>\n

6. Run-In and First-Operation Check
\nEngage the PTO at low engine idle speed in an open area, clear of bystanders, and observe the assembled agricultural PTO shaft for the first 60 seconds of operation. Listen for abnormal vibration, ticking, or guard contact noise. Gradually increase engine speed to operating RPM. After the first 30 minutes of field use, stop the tractor, disengage the PTO, and re-check the yoke snap ring engagement, guard chain anchor points, and shear bolt condition before continuing. Grease the PTO shaft u joint cross-and-bearing assemblies at the specified 8-hour interval during the first season, then follow the routine maintenance schedule in the operator documentation.<\/p>\n

\"PTO<\/p>\n

How to Choose the Right PTO Shaft for Disc Mower<\/h2>\n

Step 1: Confirm Your Tractor Spline Profile<\/strong>
\nBefore ordering any tractor PTO shaft, confirm the spline count and shaft diameter of your tractor’s PTO output stub. The most common profiles for mid-range tractors operating the New Holland 411 are 1-3\/8″ x 21 spline (1.375-21) for 35-100 HP tractors, and 1-3\/4″ x 20 spline (1.750-20) for higher-horsepower models. Using a PTO shaft adapter to bridge mismatched splines is possible but adds connection points and potential failure modes. The safest approach is to order a shaft that directly matches your tractor stub. CMN offers both spline options as standard configurations for this discbine application.<\/p>\n

Step 2: Verify PTO Speed and Shaft Rating<\/strong>
\nConfirm whether your tractor operates the PTO at 540 RPM or 1000 RPM, as indicated by the tractor operator manual and the PTO stub markings. The New Holland 411 disc mower typically operates at 1000 RPM for higher cutting capacity, though some older tractor-discbine combinations use 540 RPM. Both 540 PTO shaft and 1000 RPM PTO shaft configurations are available from CMN Transmission. Running a shaft rated for 540 RPM at 1000 RPM operating speeds will cause premature bearing and yoke failure. If you are uncertain, our technical team can advise based on your tractor model and implement input speed requirements.<\/p>\n

Step 3: Measure the Correct Shaft Length<\/strong>
\nMeasure the center-to-center distance between the tractor PTO stub and the discbine input shaft with the machine hitched in the normal field working position. A correctly sized PTO shaft length must maintain at least 150mm of telescoping overlap at the minimum working distance (shortest position) and must not bottom out (full compression) at the maximum transport or turn angle. If your measured distance falls outside the standard rated range for the 411 configuration, CMN Transmission’s engineering team can manufacture a custom PTO shaft to your exact specified dimensions with standard lead times of 7-14 business days.<\/p>\n

Step 4: Select the Appropriate Overload Protection Type<\/strong>
\nFor the New Holland 411 disc mower, the standard overload protection is a shear bolt configuration. The shear bolt PTO shaft design is the most cost-effective option for farms where overload events are infrequent and field-side replacement is straightforward. For operations in rocky or debris-laden fields where overload events occur regularly, a PTO shaft with slip clutch or slip clutch PTO shaft option may be more economical over the full season because the slip clutch resets automatically after an overload event without requiring replacement hardware. CMN Transmission can configure this discbine PTO shaft with either a shear bolt or slip clutch overload system based on your operational requirements.<\/p>\n

Step 5: Consider Full Assembly vs. Half Shaft<\/strong>
\nIf only one half of your existing PTO drive shaft for discbine is damaged, consider ordering just the tractor half or implement half as a replacement instead of the full assembly. CMN supplies both tractor-end and implement-end half shafts individually, which can reduce replacement costs significantly when only one CV joint or yoke has failed. The implement half uses a 55N 50-degree CV design, while the tractor half uses the 55N 80-degree wide-angle CV. If both halves show significant wear or if the PTO shaft tube itself is bent or corroded, a full shaft replacement is the more reliable and cost-effective long-term decision.<\/p>\n

\"PTO<\/p>\n

Common Troubleshooting of Discbine PTO Shaft<\/h2>\n

1. Problem: Vibration During PTO Operation
\nCause and Solution: Excessive vibration in a tractor PTO shaft installation is most commonly caused by a misaligned or incorrectly sized shaft that exceeds the rated working angle, a bent or bowed inner tube due to past overload, or worn PTO shaft u joint cross-and-bearing assemblies. First verify that the shaft length is correct and that the tractor-implement angle does not exceed the CV joint’s rated articulation angle at any point in the mowing pass. Inspect and replace worn U-joints. If the tube itself is visually deformed, replace the full assembly. Do not continue operating with a vibrating driveline; the resulting fatigue damage will progress rapidly to complete shaft failure.<\/p>\n

2. Problem: Shear Bolt Repeated Failure
\nCause and Solution: If the PTO shaft shear bolt is failing repeatedly during normal mowing conditions without apparent obstruction, the most likely cause is that incorrect grade or size bolts are being used as replacements. Only use the OEM-specified bolt grade and dimensions for the 55N shear pin PTO shaft application. A second common cause is operating the mower into material too dense for the machine’s rated capacity, which can be addressed by reducing ground speed or cutter disc height. In rocky fields, installing a slip clutch PTO shaft upgrade eliminates the need for repeated bolt replacement and gets the machine back to work faster after an overload event.<\/p>\n

3. Problem: Telescoping Stiffness or Seizure
\nCause and Solution: If the PTO shaft tube or telescoping profile is difficult to slide or has seized, the most frequent cause is dirt, crop debris, or corrosion between the inner and outer tube walls of the PTO shaft tubing. Disassemble the two shaft halves, thoroughly clean the inner and outer profiles with a wire brush and solvent, inspect for scoring or denting of the tube bore, and re-grease with the recommended multi-purpose grease before reassembly. If the inner tube shows visible deformation or if the corrosion has pitted the surface deeply, the tube should be replaced before further operation to prevent the shaft from seizing in the compressed position during a tight turn.<\/p>\n

4. Problem: PTO Shaft Guard Damage or Contact
\nCause and Solution: Damage to the PTO shaft cover or PTO shaft guard is often the result of the anchor chain coming loose, which allows the guard to rotate with the shaft and contact the tractor drawbar or frame. Re-anchor the guard chains at both ends before every field operation. Guards cracked by impact or UV degradation should be replaced immediately; a damaged guard provides inadequate operator protection and fails CE compliance requirements. CMN Transmission supplies replacement guard sets and individual PTO shaft parts for this shaft series. Do not continue operating with a compromised guard, particularly in environments with public access.<\/p>\n

5. Problem: Excessive Noise from CV Joints
\nCause and Solution: A clicking or grinding noise emanating from the CV joint area of this PTO drive shaft for discbine is typically caused by insufficient lubrication in the CV ball-and-cage assembly, worn or pitted CV balls, or cracked\/deteriorated CV boot seals that have allowed lubricant to escape and contamination to enter. Inspect the CV boot condition as part of every pre-season service. Torn or cracked boots must be replaced before they allow grit and water ingress to destroy the precision CV internals. If clicking persists after re-greasing, the CV joint internals should be inspected and replaced. CMN’s CV joint replacement kits are dimensionally matched to the 55N series and are available as individual PTO shaft parts.<\/p>\n

\"PTO<\/p>\n

Disc Mower PTO Shaft and Disc Mower Gearbox<\/h2>\n

The disc mower PTO shaft is the external driveline component that connects the tractor’s power take-off output to the input shaft of the disc mower’s main driveline system. It is an entirely separate component from the internal disc gearbox system, positioned externally between the two machines and exposed to the full range of tractor-implement articulation angles that occur during field operation, headland turns, and transport. The PTO shaft for New Holland discbine models specifically must accommodate both the rotational power transmission requirement and the wide angular movements demanded by the discbine’s offset or bent-tongue hitch configurations, which is why the CAT 6 double CV design is specified for this application rather than a simpler single-CV or standard cross-joint shaft.<\/p>\n

The disc mower gearbox is an enclosed, oil-lubricated gear transmission integrated into the cutterbar of the machine. In the New Holland Discbine design, the cutterbar uses a modular architecture in which each disc module contains its own sealed gear case. These individual gearboxes are connected in series by hardened alloy intermediate drive shafts, allowing the rotary power input from the main bevel gearbox at the cutterbar input end to be distributed sequentially to each disc module along the full cutting width. Each disc module gearbox steps up the input speed to achieve the required disc rotational velocity of approximately 3,000 RPM at the cutter discs themselves. Unlike the external PTO drive shaft for discbine connection, the internal disc gearboxes are maintenance items that require periodic oil changes and seal inspections, but they are designed for long service intervals and operate in a sealed, protected environment.<\/p>\n

The disc mower PTO shaft and the internal disc mower gearbox system are directly interdependent: neither can function without the other, and the performance and reliability of each component directly affects the service life of the other. The PTO driveline shaft delivers rotary power from the tractor PTO to the main bevel gearbox at the discbine input shaft. The main bevel gearbox then converts the shaft’s rotational axis by 90 degrees and distributes power laterally along the cutterbar through the series of interconnected modular disc gearboxes. If the agricultural PTO shaft transmits vibration or torque spikes into the input gearbox through a worn or misaligned driveline, those impulses travel through the entire modular gearbox chain, accelerating bearing wear and gear tooth fatigue across the full cutterbar width. Conversely, a failed or seized disc gearbox module creates an instant overload event in the driveline that the shear bolt or slip clutch in the tractor PTO shaft must absorb to protect both machines from cascade damage.<\/p>\n

CMN Transmission supplies both the PTO shaft for disc mower applications and the full range of disc mower gearboxes as independent products, allowing agricultural dealers, repair workshops, and farm operators to source both components from a single, certified supplier. Whether you need a replacement discbine PTO shaft, a cutterbar input gearbox, or individual modular disc gear cases, CMN Transmission provides factory-direct pricing, documented quality certification, and technical support for the full drivetrain.<\/p>\n

\"Disc<\/p>\n

Why Choose CMN Transmission’s Agricultural PTO Shafts?<\/h2>\n

CMN Transmission (Korea) stands as one of the world’s leading suppliers of industrial and agricultural power transmission solutions, with a product range spanning PTO drive shafts, agricultural gearboxes, hydraulic cylinders, planetary gearboxes, worm gearboxes, bevel gears, chain sprockets, chains, gear racks, pulleys, taper bushes, couplings, and more. Headquartered in Ansan-si, Gyeonggi-do, Korea, with a production base and over 10 shareholding cooperative factories, we maintain an inventory of more than 150,000 standard stock products and serve customers in over 53 countries across North America, Europe, South America, the Middle East, Africa, Southeast Asia, and Oceania.<\/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 ISO9001 and CE certifications, ensuring compliance with international safety and performance standards. We also hold TS16949 certification, reflecting the automotive-grade process control discipline applied across our driveline manufacturing operations.<\/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. After the sale, our one-stop after-sales service ensures that replacement PTO shaft parts, 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.<\/p>\n

\"Peralatan\"Peralatan<\/p>\n

Pertanyaan yang Sering Diajukan (FAQ)<\/h2>\n

Q: What is the correct PTO shaft specification for the New Holland 411 Disc Mower?<\/strong>
\nA: The New Holland 411 Disc Mower uses a CAT 6 constant-velocity agricultural PTO shaft equivalent to the Weasler 55N series, with an 80-degree CV joint on the tractor side and a 50-degree CV joint on the implement side. The standard spline configuration is a 1-3\/8″ x 21 spline (1.375-21) tractor connection with a 1-1\/2″ x 23 spline implement connection. A 1-3\/4″ x 20 spline tractor-end variant is also available for higher-horsepower tractors. Confirm your exact tractor PTO stub spline profile before ordering to ensure a direct fit. CMN Transmission’s technical team can assist with spline identification if you are unsure.<\/p>\n

Q: Is this PTO shaft a direct replacement for the Weasler 55N assembly on the New Holland 411?<\/strong>
\nA: Yes. This shaft is engineered as a direct replacement of Weasler PTO shaft 55N-series assemblies specified for the New Holland 411. The dimensional envelope, spline profiles, CV joint articulation angles, and telescoping tube dimensions are all matched to the OEM specification. No adapters, shimming, or modification to the tractor or discbine are required for installation. The shaft is supplied with a full-length PTO shaft guard assembly compatible with the existing anchor chain attachment points on the New Holland 411 input housing. Batch test reports confirming dimensional compliance with the 55N specification are available upon request.<\/p>\n

Q: What is the difference between a 540 PTO shaft and a 1000 PTO shaft for disc mower applications?<\/strong>
\nA: The 540 PTO shaft and 1000 PTO shaft designations refer to the rotational speed at which the tractor’s power take-off output shaft operates. A 540 RPM PTO shaft has a 1-3\/8″ diameter stub on most tractors, while a 1000 rpm PTO shaft uses a 1-3\/4″ diameter stub. The New Holland 411 Disc Mower is typically specified for 1000 RPM PTO operation to achieve the required disc speed, but the tractor’s actual PTO stub diameter and spline count determine which PTO shaft sizes configuration you need. Mismatching the shaft to your tractor’s PTO speed will result in incorrect disc speed, increased noise, and accelerated wear. CMN Transmission supplies both 540 and 1000 RPM compatible configurations for this application.<\/p>\n

Q: How do I measure the correct PTO shaft length for my New Holland 411 setup?<\/strong>
\nA: With the tractor and New Holland 411 hitched in the working field position (not transport), measure the center-to-center distance between the face of the tractor PTO stub and the face of the discbine’s input shaft yoke. The correct PTO shaft length must provide a minimum of 150mm of telescoping overlap between the inner and outer PTO shaft tubing at this minimum working distance, and must not fully compress (bottom out) when the hitch is raised to the transport height or when the implement is turned to the maximum headland angle. If your measurement falls outside the standard range, contact CMN Transmission with the hitch dimension and we will supply a custom PTO shaft to your specified PTO shaft dimensions.<\/p>\n

Q: What is the correct shear bolt grade and size for the 55N series PTO shaft shear bolt protection?<\/strong>
\nA: The PTO shaft shear bolt specification for the 55N series is printed on the shaft label and supplied in the product documentation. Only use the specified bolt grade (typically a mild-grade metric M8 or M10, grade 4.6 or as marked) as the shear bolt PTO shaft protection element. Do not substitute higher-grade (grade 8.8 or above) fasteners: higher-grade bolts will not shear at the design torque limit and will transfer the overload energy to the more expensive downstream components. Replacement PTO shaft parts including shear bolt kits are available individually from CMN Transmission and are commonly stocked by agricultural fastener suppliers worldwide. Always carry a supply of the correct grade bolts in the tractor toolbox during the mowing season.<\/p>\n

Q: Can I order a slip clutch PTO shaft version instead of a shear bolt configuration for the New Holland 411?<\/strong>
\nA: Yes. CMN Transmission can supply a PTO shaft with slip clutch or slip clutch PTO shaft configuration for the New Holland 411 application in place of the standard shear bolt design. A slip clutch PTO shaft incorporates a friction disk assembly that slips when torque exceeds the set threshold, then automatically re-engages when the overload condition clears, without requiring any operator intervention or replacement hardware. This is particularly valuable for operations in rocky terrain or dense weed conditions where overload events occur frequently enough to make individual shear pin PTO shaft replacements economically burdensome during the mowing season. Contact our technical team to specify the correct slip clutch torque setting for your tractor and discbine combination.<\/p>\n

Q: How often should I grease the PTO shaft u joint and CV assemblies on this discbine driveline?<\/strong>
\nA: For the PTO shaft u joint cross-and-bearing assemblies on this shaft, we recommend greasing with a quality multi-purpose EP (extreme-pressure) grease every 8 hours during the first 50 hours of operation on a new or replacement shaft, then every 20-25 operating hours or at the beginning of each working day thereafter during peak season use. The CV ball-and-cage assemblies are sealed units with their own grease reservoir; they should be inspected at each greasing interval for boot condition and topped up through the CV grease nipple if any boot damage or grease loss is evident. The telescoping PTO shaft tube inner profile should be cleaned and re-greased at the start of each season. Following these intervals maximizes the working life of all the PTO shaft parts in the assembly.<\/p>\n

Q: Is the PTO shaft guard (PTO shaft cover) included with the CMN replacement assembly?<\/strong>
\nA: Yes. Every complete PTO shaft assembly from CMN Transmission ships with a full-length high-density polyethylene PTO shaft guard and PTO shaft cover assembly, including both safety cones and the anchor chain hardware. The guard is dimensioned to fit over the full shaft assembly including both CV joint housings at all rated articulation angles without contact. Guard replacement sets and individual cone components are also available separately as PTO shaft parts for operators who need to replace a damaged guard without replacing the complete driveline. All guards meet CE Machinery Directive requirements for PTO driveline guarding and are UV-stabilized for long outdoor service life.<\/p>\n

Q: Can CMN Transmission supply a custom PTO shaft for non-standard tractor or implement spline configurations?<\/strong>
\nA: Yes. CMN Transmission’s engineering team provides a full custom PTO shaft manufacturing service for non-standard applications. This includes custom PTO shaft yoke profiles for unusual tractor spline counts or diameters, non-standard PTO shaft adapter configurations for older or specialty implement input shafts, and bespoke PTO shaft length manufacturing for hitch geometries that fall outside the standard range. Custom orders require the customer to provide tractor PTO stub specifications (diameter, spline count, length) and implement input shaft specifications, along with the measured working and transport hitch distances. Dimensional drawings are provided for approval before production. Lead times for custom PTO drive shafts are typically 7-15 business days depending on configuration complexity and quantity.<\/p>\n

\"PTO<\/p>\n

Ulasan Pelanggan<\/h2>\n

Marcus Hollingsworth, Manajer Pertanian, Amerika Serikat<\/strong>
\n“Been running a New Holland 411 on our 340-acre operation in central Kansas for several years, and we’ve gone through a couple of PTO shafts over that time. Ordered this CAT 6 double CV shaft from CMN Transmission after the original 55N Weasler unit finally wore out its CV boot seals after four good seasons. The spec match was perfect – slid straight onto the 1.375-21 tractor stub and the 1.5×23 discbine input without any issues whatsoever. We’re now 160 hours into the new shaft cutting mixed alfalfa and brome, and it has been completely smooth with zero vibration that we noticed with the old worn unit. The guard tube and chain anchors are solid construction, noticeably thicker than a cheaper option I tried a few years back. Would not hesitate to order again.”<\/p>\n

Craig Mortimer, Agricultural Contractor, New Zealand<\/strong>
\n“We run a contracting operation in Canterbury and cut around 1,800 acres of ryegrass and clover per season. The discbine PTO shaft on our 411 sheared a yoke weld mid-season, which was catastrophic timing. CMN had the replacement 55N 80×50 double CV assembly in stock, and despite us being in New Zealand, the shaft was on our workshop bench in nine days. That’s genuinely impressive logistics. The part itself fitted perfectly – no shimming, no modifications needed – and we were back in the paddock in under two hours. Quality of the steel and the guard material is solid, and frankly at the price point it’s hard to justify buying OEM for replacement parts. Already have a second one on the shelf for next season.”<\/p>\n

Jean-Pierre Dumont, Farmer, France<\/strong>
\n“I operate a 180-hectare dairy farm in Normandy and we perform two to three cuts of ryegrass and clover each year with our New Holland 411. I ordered the PTO driveshaft from CMN Transmission to replace the original Weasler after seven seasons. The quality is entirely comparable and the price is very attractive. What convinced me was the responsiveness of CMN\u2019s technical service\u2014they verified the spline compatibility with my tractor before shipping. The shaft arrived in perfect condition, the guards are robust, and the assembly was straightforward without any adapters. I recommend it without hesitation for replacement parts.”<\/p>\n

Klaus Weber, Kontraktor Pertanian, Jerman<\/strong>
\n“I operate a contracting business in Bavaria and rely on reliable spare parts. I ordered the CAT-6 universal joint shaft (55N 80×50) from CMN Transmission for our New Holland 411 disc mower after the original Weasler shaft had reached the end of its service life after approximately 5 seasons. The price is significantly lower than from the German dealer, yet the quality is comparable. The driveshaft guard tubes are of solid HDPE quality, and all cross joints were delivered cleanly lubricated. CE certification was included and is important for our business insurance. The delivery time to southern Germany was 11 days. I will continue to order from CMN in the future as well.”<\/p>\n

Tyler Mackenzie, Hay Producer, Canada<\/strong>
\n“We produce about 4,000 round bales per season out of southern Ontario so downtime in the mowing window is really not something we can afford. I ordered the CMN implement-half replacement shaft (55N 50-degree CV half, 1.5×23 spline) when only the implement end of our 411 shaft was showing wear. Appreciate that you can order just the half you need rather than a full assembly – saves real money when only part of the shaft is done. Packaging was good, part arrived undamaged in 10 days to our Ontario address. Only reason for four stars instead of five is the instruction sheet was a bit light on detail for the shear bolt spec – had to look that up ourselves. Shaft itself is solid, no issues after one full cutting season.”<\/p>\n

James Whitfield, Estates Farm Manager, United Kingdom
\n<\/strong> “I manage the plant fleet for a large estates farming operation in Lincolnshire and we needed a quality replacement PTO shaft for our New Holland 411 at a sensible budget. The dealer price for the Weasler OEM replacement was frankly eye-watering so I looked at CMN Transmission as an alternative. The technical team confirmed spline compatibility for our John Deere tractor (1.375-21 stub) before we placed the order, which gave us confidence. Shaft arrived in good condition, fitted on the first attempt, and we cut the whole of our 220-acre grass ley programme this summer without a single problem. Build quality is on par with what I’d expect from a tier-1 brand. The price saving was substantial. Highly recommend for fleet buyers.”<\/p>\n

Pablo Rodriguez, Agricultural Producer, Argentina<\/strong>
\n“I purchased this power take-off shaft for our New Holland 411 on an estancia in the province of Buenos Aires, where we cut approximately 600 hectares of natural pastures per season. The original Weasler shaft broke at the cross joint on the tractor side after six years, and the official replacement took weeks to arrive due to our location. CMN Transmission shipped the complete 55N 80×50 double CV assembly in less than two weeks directly to Buenos Aires, which was a very positive surprise. The fit was exact, the sliding shafts operated smoothly from the first hour, and the after-sales warranty was confirmed in writing. Very good product and excellent customer service.”<\/p>\n

Declan O’Brien, Dairy Farmer, Ireland
\n<\/strong> “We milk 320 cows on a farm in County Cork and the 411 is our main silage mowing unit. We ran the original driveshaft for seven years before it finally needed replacing. Went with CMN Transmission based on a recommendation from another farmer at the marts and genuinely happy we did. The heavy-duty CV shaft handled our dense ryegrass swards without any complaint, and we had no issues with the shear bolt protection during the entire season including one instance where we clipped a granite kerb on a gateway. The shear bolt did exactly what it was supposed to – broke cleanly, easy to replace, no other damage. Good value, reliable quality and the after-sales contact was friendly and helpful when I rang with a question about greasing intervals.”<\/p>\n

Brad Thompson, Broadacre Farmer, Australia<\/strong>
\n“Run a broadacre cropping and hay operation in the Riverina district of New South Wales. Ordered the CMN full shaft assembly – 1.375-21 tractor end, 1.5×23 implement end, 55N double CV – for our New Holland 411. Measured everything up carefully before ordering as the instructions suggested and the shaft slid on perfectly. I was a bit sceptical about the quality coming from an online supplier but the steel tube thickness and the yoke forging quality look equal to the original in my view. The polyethylene guard is good, chain anchors are stainless and won’t rust. We’ve done around two full mowing seasons on the shaft, around 240 total hours cutting a mix of sub-clover, vetch, and cereal rye cover crops. Not a mark on it. Will buy from CMN again.”<\/p>","protected":false},"excerpt":{"rendered":"

Shop CMN Transmission’s heavy-duty PTO shaft for New Holland Discbine 411 disc mower, a precision-engineered CAT 6 constant-velocity agricultural PTO shaft designed as a direct replacement of Weasler PTO shaft assemblies. This disc mower PTO shaft features a 55N-series double CV design: an 80-degree CV on the tractor side and a 50-degree CV on the implement side, supporting 1-3\/8″ x 21 spline or 1-3\/4″ x 20 spline tractor ends and 1-1\/2″ x 23 spline implement connections. Compatible with 540 and 1000 RPM PTO outputs, this PTO driveline shaft for disc mower operations delivers vibration-free power, extended service life, and factory-direct pricing.<\/p>","protected":false},"featured_media":6979,"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-6992","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\/id\/wp-json\/wp\/v2\/product\/6992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/comments?post=6992"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/media\/6979"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/media?parent=6992"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/product_brand?post=6992"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/product_cat?post=6992"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/id\/wp-json\/wp\/v2\/product_tag?post=6992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}