Вал отбора мощности для дисковых косилок New Holland Discbine 1409, 1410, 1411, 1412, 1441, 1442.

Reliable PTO Shaft for New Holland Discbine Models

PTO Shaft for New Holland Discbine Model: 1409, 1410, 1411, 1412, 1441, 1442 Disc Mower

The PTO shaft for New Holland Discbine 1409, 1410, 1411, 1412, 1441, and 1442 disc mower-conditioners is the critical mechanical link between your tractor's power output and the cutterbar's high-speed disc modules. These Discbine models carry 7 to 12 individual disc modules spinning at 3,000 rpm across cutting widths from 9 ft 2 in up to 15 ft 7 in, demanding a tractor PTO shaft capable of transmitting substantial torque reliably under the wide angular deflections inherent in offset and center-pivot tongue configurations. CMN Transmission's solution is built around a CAT 6 Constant Velocity main shaft that absorbs angular deflection without vibration or cyclic speed variation, paired with a Category 5 Double CV PTO driveline shaft secondary assembly for the Discbine's internal drive requirements. This combination is especially critical for the bent-tongue Models 1411 and 1412 and the swivel-hitch Models 1441 and 1442, where the disc mower PTO shaft must function smoothly at significant working angles during every headland turn and across rolling or sloped terrain. Whether you farm on flat plains or challenging hill country, this PTO drive shaft for discbine delivers consistent, uninterrupted power transfer through every cut.

Designed as a precision direct-fit replacement for OEM and aftermarket PTO shaft parts, this PTO driveline shaft for disc mower is manufactured from high-grade alloy steel with advanced CNC machining, induction hardening, and balanced assembly techniques. The FNT34 Combination Clutch provides dual overload protection through integrated friction-slip and overrunning mechanisms, guarding both the tractor drivetrain and the expensive Discbine cutterbar gearbox from shock loads and flywheel back-torque. Available in standard 1.375-21 spline implement configurations and accommodating either 1.375-6 or 1.750-20 tractor yoke splines, this heavy duty PTO shaft is a reliable, cost-effective alternative to OEM parts. ISO 9001, CE, and TS16949 certified, it serves dairy, hay, silage, and forage operations across six continents. Whether you are running a 540 PTO shaft configuration on a mid-horsepower tractor or a 1000 PTO shaft setup on a high-horsepower unit, this shaft is engineered to deliver season-long reliability with reduced maintenance cost and factory-direct value pricing that eliminates dealer markups on tractor PTO shafts.

Главный вал: CAT 6, скоростной вал

Implement input shaft is usually 1.375-21 spline. Many models come equipped with CAT4 PTO. We recommend CAT6 for improved life. Often these PTO are short (36" OAL). Beware over-turning!

Secondary PTO Shaft: Category 5 Double CV

Our recommended replacement: Category 5 Double CV

Many, but not all Discbine secondary shafts are a double CV with combination clutch

FNT34 Combination Clutch (Friction and Overrunning)

Технические характеристики

* Custom PTO shaft dimensions, non-standard spline configurations, and OEM orders available on request. Contact our technical team for confirmation of exact PTO shaft sizes for your tractor-implement combination.

Features of PTO Drive Shaft for New Holland Discbine

1. CAT 6 Constant Velocity Main Shaft
The CAT 6 CV joint technology ensures smooth, vibration-free power transmission even when the Discbine operates at significant working angles. Unlike standard universal joints that produce sinusoidal speed fluctuations at angle, the CV joint maintains perfectly constant rotational speed throughout each revolution. This eliminates the cyclic torque spikes that cause premature wear in PTO shaft u joint bearings and accelerate fatigue in the cutterbar's input gearbox, extending overall drivetrain service life and reducing costly unplanned downtime during the critical hay harvest window.

2. FNT34 Combination Clutch Protection
The FNT34 Combination Clutch integrates both a friction slip element and an overrunning clutch into a single compact unit. The friction component protects against sudden torque surges when the cutterbar strikes rocks or buried debris, absorbing the shock energy before it reaches the implement gearbox. Simultaneously, the overrunning function prevents the inertia of the spinning disc cutterbar from back-driving the tractor's PTO system during deceleration, protecting the tractor gearbox from reverse-torque damage. This dual protection mechanism is essential for any slip clutch PTO shaft application in demanding field conditions.

3. Category 5 Double CV Secondary Shaft
The secondary shaft uses a Category 5 Double CV configuration specifically engineered for the high-articulation demands of the Discbine's offset and center-pivot tongue geometries. A double CV joint assembly allows this PTO shaft for discbine secondary drive to operate through a wide range of angles without generating vibration, reducing stress concentration at the PTO shaft yoke connections and the implement input gearbox housing. This is particularly important for the Models 1441 and 1442, which feature a swivel-hitch center-pivot tongue that creates dynamic angular changes throughout each operating pass and during headland turns.

4. Direct-Fit Spline Compatibility
Engineered to precisely match the 1.375-21 spline implement input standard used across all six Discbine models in this range. Tractor-end PTO shaft yoke options include the 1.375-6 spline for standard 540 PTO shaft applications and the 1.750-20 spline for higher-horsepower 1000 rpm PTO shaft configurations. This eliminates the need for a PTO shaft adapter in the vast majority of standard tractor-implement pairings, ensuring a clean, direct connection that minimizes angular runout and maximizes torque transmission efficiency from the tractor PTO stub shaft to the Discbine input.

5. Precision CNC Manufacturing and Heat Treatment
Every component of this agricultural PTO shaft is produced using CNC precision machining processes followed by induction hardening and controlled tempering. This manufacturing approach ensures consistent PTO shaft dimensions and tight tolerances across every unit, critical for proper CV joint operation and balanced rotation at operating PTO speeds. Advanced heat treatment achieves high surface hardness at the spline and journal contact points while maintaining core toughness, resulting in resistance to both wear and impact fracture that is essential for the demanding, high-cycle loading characteristic of commercial disc mower operation.

6. CE-Compliant Full Telescoping PTO Shaft Guard
The included PTO shaft guard is a full-length, telescoping plastic assembly compliant with CE and OSHA operator safety standards. The PTO shaft cover is constructed from UV-stabilized high-impact polymer to resist cracking and brittleness even after extended outdoor service. Integrated bearing rings allow the outer guard tube to remain stationary while the shaft rotates inside it, eliminating operator entanglement risk. Guard retention chains are included at both ends for secure attachment to the tractor and implement frames. A damaged or missing PTO shaft guard is a critical safety hazard and this component must always be in place during operation.

Working Principle of PTO Shaft for Disc Mower

1. Power Input and Tractor Connection
When the tractor's PTO lever is engaged, the rear output stub shaft begins rotating at either 540 rpm (for a standard 540 PTO shaft application) or 1000 rpm (for a 1000 rpm PTO shaft high-horsepower configuration). The tractor-end PTO shaft yoke, splined to either 1.375-6 or 1.750-20 depending on the tractor's PTO specification, locks onto this stub shaft via a spring-loaded locking pin. This mechanical coupling transmits full tractor PTO torque into the PTO drive shaft body, initiating rotation that travels through the entire driveline toward the Discbine.

2. CAT 6 Constant Velocity Joint Operation
The core technology of this discbine PTO shaft is the CAT 6 Constant Velocity joint. A conventional Cardan (cross-and-bearing) PTO shaft universal joint produces a sinusoidal speed variation when operating at any angle, with two speed peaks and two speed troughs per revolution. At the typical operating angles of the New Holland Discbine's offset and center-pivot tongue configurations, this variation can generate significant vibration, noise, and accelerated wear at every joint and bearing along the driveline. The CAT 6 CV joint eliminates this effect entirely by using a centering ball-and-socket mechanism that maintains identical input and output rotational speeds regardless of the operating angle. The result is perfectly smooth, vibration-free torque transmission at all Discbine working positions, reducing wear on the PTO shaft u joint bearing assemblies and extending the service life of the Discbine's internal cutterbar gearboxes by reducing the cyclic load reversals that cause fatigue cracks in gear teeth and shaft journals.

3. Telescoping PTO Shaft Tube Mechanism
The outer and inner PTO shaft tube sections are produced in a profiled cross-section (lemon or star profile) that allows the inner PTO shaft tubing to slide freely inside the outer while continuing to transmit full torque through the interlocking profile. As the Discbine header rises and falls over field terrain, and as the tongue pivots during headland turns, the effective distance between the tractor PTO output and the Discbine input changes continuously. The telescoping PTO shaft tube accommodates this length change fluidly while the CV and Cardan joints simultaneously accommodate angular changes. Operators must verify that the correct PTO shaft length is selected so that the shaft never reaches its mechanical minimum or maximum travel limit during any field operation, as bottoming out or full extension will cause shaft separation or structural damage.

4. FNT34 Combination Clutch: Shock and Back-Torque Protection
Positioned at the implement-input end of the PTO driveline shaft, the FNT34 Combination Clutch fulfills two essential protection roles simultaneously. During normal operation, it transmits full torque rigidly with no slippage. When the disc cutterbar encounters a sudden obstruction such as a buried rock, embedded fence post, or hard soil mound, the friction element of this PTO shaft with slip clutch slips, absorbing the instantaneous shock energy rather than transmitting it as a destructive torque spike into the Discbine's expensive modular gearbox system. The slip torque threshold is factory-set to activate before gear tooth breakage occurs. The overrunning element functions during deceleration and PTO disengagement. The New Holland Discbine's heavy rotating disc and conditioning system carries significant rotational inertia, and without overrunning protection this flywheel mass would transmit reverse torque back through the tractor PTO shaft into the tractor's gearbox and PTO brake system. The overrunning clutch allows the implement to coast freely to a stop independently of the tractor drivetrain, preventing back-torque damage in all deceleration scenarios.

5. Secondary Double CV Shaft and Guard System
The Category 5 Double CV secondary agricultural PTO shaft handles power distribution within the Discbine's internal driveline from the primary input gearbox to the cutterbar input, accommodating the wide angular range demanded by the machine's conditioning roll drive and cutterbar geometry on sloping or uneven terrain. The full-length PTO shaft guard assembly rotates freely on bearing rings around the spinning shaft, remaining stationary while the driveline turns at high speed inside it. Guard retention chains fix both ends of the guard to the tractor and implement frames, preventing rotation. This system complies fully with CE Machinery Directive guarding requirements and is essential for safe operation around the rapidly rotating PTO drive shafts of the Discbine system.

Сценарии применения

1. Forage Harvesting
Mowing high-value crops including alfalfa, red clover, and perennial ryegrass at the correct growth stage is essential to maximize nutritional content for livestock feed. The Discbine's precision cutting action relies on a stable, constant-speed PTO drive shaft input to maintain uniform disc speed at 3,000 rpm across all cutting modules simultaneously. Variations in PTO shaft speed caused by a worn or vibrating tractor PTO shaft result in uneven stubble height, leaf shatter losses, and reduced digestible protein content in the harvested forage, directly impacting livestock performance and farm profitability.

2. Hay Harvesting
The primary application for this disc mower PTO shaft. The Discbine cuts grasses and legumes at field speeds up to 9 mph, forming windrows or swaths for field drying. The integrated conditioning rolls crimp and crack plant stems along their full length to accelerate moisture loss before baling, and this entire process depends on the uninterrupted, smooth torque delivery of a reliable PTO shaft for disc mower. Any vibration or torque variation at the PTO driveline level directly impacts the consistency of the cut and conditioning quality of the finished windrow.

3. Silage Production
Cutting crops at higher moisture levels for fermented silage storage in bunkers, pits, or wrapped bales requires fast, even cutting to ensure uniform crop length and consistent fermentation quality throughout the clamp. The PTO shaft for New Holland discbine must deliver steady power to maintain consistent disc tip speed and cutter bar module synchronization throughout high-yield, high-density silage crop conditions. Inconsistent drive input from a worn or improperly specified PTO driveline shaft leads to uneven cut lengths and variable moisture content, creating fermentation quality issues that can compromise the entire silage clamp.

4. Управление пастбищами
Topping and trimming pastures to control rank or stemmy growth, remove unwanted weeds and thistles, and encourage fresh palatable re-growth for grazing animals is a high-cycle, lower-intensity application well suited to the Discbine's mowing system. This is a common secondary application for the Discbine on mixed livestock farms, and the PTO shaft with slip clutch combination clutch protection is particularly valuable when mowing established pastures where hidden rocks, roots, and hard terrain features are common obstacles that would otherwise cause gearbox damage without the friction slip protection of the FNT34 clutch assembly on this agricultural PTO shaft.

5. Roadside and Specialty Mowing
Maintaining roadsides, drainage ditches, airport buffer strips, and conservation headlands where a clean, controlled cut is required in irregular or environmentally sensitive areas represents a specialist application that benefits from the Discbine's precise height control and the Discbine's narrow-to-wide model range. In these applications the PTO drive shaft for discbine must tolerate frequent direction changes, tight headland turns, and the angular demands of banking or slope-side cutting. The CAT 6 CV joint design of this PTO shaft tractor to implement connection is especially valuable in these high-angle, high-cycle mowing scenarios where a conventional Cardan shaft would generate excessive vibration.

6. Cover Crop Termination
Cutting down winter cover crops such as cereal rye, vetch, or hairy oats ahead of planting season allows the biomass to be laid down as a protective mulch layer that suppresses weed emergence and protects soil structure. The Discbine provides a clean, precise cut height that leaves the stubble at the correct height for effective mulching without soil disturbance. The heavy duty PTO shaft from CMN Transmission ensures reliable power transmission through the often-dense, lodged, or frost-damaged biomass characteristic of overwintered cover crop stands, which can place intermittent high loads on the disc mower drivetrain throughout the termination operation.

Disc Mower PTO Shaft Installation Steps

Step 1: Ensure Full Machine Safety Before Beginning
Before fitting this Вал отбора мощности for disc mower, disengage the tractor PTO completely, reduce engine speed to idle, shut off the engine, remove the ignition key, and wait for all rotating components to come to a complete stop. Place the tractor in park with the parking brake fully applied. Ensure the Discbine is supported safely on level ground with no bystanders in the work area. Wear heavy leather gloves and safety glasses throughout the installation process, as the PTO shaft yoke and spline components have sharp edges that can cause cuts and abrasions if handled carelessly.

Step 2: Verify PTO Shaft Dimensions and Length
Before installation, couple the tractor and Discbine together at the normal operating hitch setting and measure the actual center-to-center distance between the tractor PTO output stub shaft and the Discbine input stub shaft with both units in the operating height position. Verify that the PTO shaft length allows a minimum of 1 in (25 mm) of overlap in the telescoping tubes at maximum extension and that the inner tube does not bottom out at minimum length. Note that the standard PTO shaft dimensions for these Discbine models are approximately 36 in OAL and the shaft is notably short. Beware of over-turning on tight headland maneuvers, which can overextend the shaft beyond its safe travel range.

Step 3: Confirm Spline Compatibility at Both Ends
Verify the tractor-end PTO shaft yoke spline matches your tractor's PTO output shaft specification. A 1.375-6 spline yoke suits standard 540 rpm tractors, while the 1.750-20 spline is for 1000 rpm high-horsepower tractors. Confirm the implement-end 1.375-21 spline yoke mates cleanly with the Discbine's input shaft. Never force a mismatched spline. If a PTO shaft adapter is genuinely required, confirm it is rated for the torque being transmitted before use. An incorrect adapter can fail catastrophically under load, creating a serious safety hazard to the operator and bystanders near the machine.

Step 4: Lubricate All Joints Before First Use
Apply EP2-grade lithium grease through all provided grease nipples on the CV joint, any Cardan joints, and the sliding yoke splines before the first operation. Apply a generous coat of grease along the full inner surface of the outer PTO shaft tube and the full outer surface of the inner tube before assembling the telescoping sections. Correct pre-lubrication before first use is one of the most important steps in maximizing the service life of the PTO shaft u joint bearing assemblies and the telescoping PTO shaft tubing. Failure to lubricate at installation will cause premature spline wear and joint seizure within the first hours of operation.

Step 5: Fit and Secure the Shaft and Guard Assembly
Slide the tractor-end yoke onto the tractor PTO stub shaft, aligning the splines, and push firmly until the spring-loaded locking pin clicks into the groove on the PTO stub shaft. Attach the implement end to the Discbine input shaft in the same manner. Once both ends are seated and locked, attach the guard retention chain or strap from the tractor-end PTO shaft cover to a fixed point on the tractor chassis, and the implement-end chain to the Discbine frame. These chains must be attached to prevent the PTO shaft guard from spinning with the shaft. Never operate the Discbine with the guard removed, missing, or damaged under any circumstances.

Step 6: No-Load Test and Final Inspection
With all guards secured and all bystanders well clear of the machine, start the tractor and engage the PTO at low engine speed with the Discbine header raised clear of the ground. Observe the shaft in operation from a safe distance, checking that the guard assembly remains stationary and that the shaft telescopes and articulates smoothly without binding or unusual noise. Gradually increase to the rated operating PTO speed and listen for any vibration, knocking, or resonance. If any abnormal noise, vibration, or resistance is detected, disengage the PTO immediately, shut down, and investigate before proceeding. Only proceed with field cutting after a satisfactory no-load run of at least 2 to 3 minutes confirms correct installation.

Советы по техническому обслуживанию

1. Regular Greasing (Every 8 Hours)
All CV joints, Cardan joints, and sliding PTO shaft yoke splines require greasing via the provided nipples every 8 hours of operation or at minimum once per day during peak seasonal use. Use only EP2-grade lithium-based grease approved for agricultural driveline components. Grease until fresh lubricant is seen emerging from the joint seals, confirming all bearing surfaces have been reached. This is the single most effective maintenance action for extending PTO shaft universal joint and CV joint service life in the abrasive, moisture-laden field environment.

2. Guard Inspection After Every Use
Inspect the PTO shaft cover and full-length guard assembly after each use for cracks, splits, impact deformation, or UV degradation that has caused the plastic to become brittle. Remove all trapped crop residue, soil, and debris from inside the guard to prevent binding against the rotating shaft. Confirm the bearing rings at each end of the guard allow the outer guard tube to rotate freely relative to the inner shaft body. A guard that binds or drags against the shaft will heat up, distort, and ultimately fail, exposing the operator to entanglement risk from the high-speed rotating PTO drive shaft.

3. Spline Wear Check (Monthly / Seasonal)
Periodically disconnect the shaft and inspect both the tractor-end and implement-end PTO shaft yoke splines for wear, fretting corrosion, or tooth deformation. Rocking the yoke by hand should reveal no perceptible angular play between the yoke and the stub shaft splines. Any detectable play indicates that spline wear has begun. Worn splines accelerate stress concentration at the CV joint and can cause the yoke to slip under peak torque, leading to sudden shaft disconnection under load. Replace worn yoke assemblies or complete shaft assemblies from CMN Transmission's PTO shaft parts range before the wear progresses to a safety-critical level.

4. Telescoping Tube Lubrication and Inspection
At least once per season, fully separate the telescoping PTO shaft tube sections, clean both inner and outer PTO shaft tubing surfaces with a dry cloth, remove any rust scale or contamination, and apply a fresh coat of EP2 grease along the full length of the inner tube profile before reassembling. Check the inner tube for any bending, denting, or surface corrosion that could cause binding or unbalanced rotation. Inspect the safety chain or cable that prevents the shaft from fully separating during field use and replace it if it shows signs of stretching, kinking, or corrosion. This chain is a critical retention safety device.

5. Friction Clutch Setting Verification
The FNT34 Combination Clutch friction element is spring-loaded to a factory-set slip torque specification. Verify annually that the clutch slip torque remains within the correct range by using a torque wrench test method or by observing clutch behavior during controlled testing: the clutch should not slip during normal mowing of standing grass crop but should slip cleanly when a sudden overload is applied. If the clutch slips under normal load, increase spring pressure or inspect friction discs for wear. If the clutch never slips even on hard impacts, suspect a seized or corroded friction element. Correct clutch function is critical for protection of this PTO shaft with slip clutch and the Discbine gearbox system it protects.

6. End-of-Season Storage Preparation
Before long-term storage, remove the agricultural PTO shaft from both tractor and implement, clean all external surfaces thoroughly with a dry brush, grease all joints and splines via the grease nipples, and coat the inner telescoping tube with a heavy layer of fresh grease to prevent seasonal corrosion. Store the shaft horizontally in a clean, dry location away from UV exposure and chemical contact. Inspect the guard assembly for any damage sustained during the season and order replacement guard sections or bearing rings before the next season begins. Replace any shear bolt PTO shaft shear elements that show corrosion or deformation to ensure correct protective function at season startup.

Common Troubleshooting of PTO Shaft for Discbine

1. Чрезмерная вибрация во время работы
Abnormal vibration felt through the tractor seat or steering wheel during Discbine operation is most commonly caused by the PTO shaft length being incorrect: either the telescoping tube is near fully extended or near fully compressed, causing the shaft to run out of its correct balance range. Also inspect for a bent PTO shaft tube, worn or seized PTO shaft u joint cross-and-bearing assemblies, or a loose yoke connection. A severely worn CV joint with excessive play in its centering mechanism will also produce vibration at operating speed. Disconnect and inspect all components before resuming field operation.

2. PTO Shaft Running Hot at CV Joint
Heat generation at the CV joint area during operation is a clear indicator of insufficient lubrication, severely worn joint bearings, or an operating angle that exceeds the rated maximum for the joint. First re-grease the CV joint through its nipple and run briefly to allow the grease to distribute. If overheating continues after greasing, inspect the CV joint centering ball and bearing races for wear or pitting. Verify the actual PTO shaft tractor to implement angle during field operation does not exceed the manufacturer's specified maximum angle for the CAT 6 CV configuration.

3. Clutch Slipping Under Normal Mowing Load
If the slip clutch PTO shaft friction element slips continuously during normal grass or alfalfa mowing without any impact event, the clutch spring pressure has likely decreased due to spring fatigue, or the friction disc material is worn below the minimum thickness specification. Disassemble the FNT34 clutch and measure friction disc thickness against the service manual limit. Inspect the spring stack height. Replace worn friction discs or springs and reset the clutch to the correct torque specification. Also check for oil contamination of the friction disc surface, which causes uncontrolled slip at much lower torque levels than the intended setting.

4. Clunking or Knocking During PTO Engagement
Clunking or knocking sounds at PTO engagement or during directional changes typically indicate worn splines in the PTO shaft yoke connections or worn PTO shaft universal joint cross-and-bearing assemblies with excessive angular play. Disconnect the shaft and manually check all joints for play by gripping adjacent yoke arms and attempting to flex them. Any detectable movement in a bearing cup relative to the journal cross indicates a worn joint. Worn PTO shaft parts at this level should be replaced promptly to prevent progressive component failure that could ultimately result in shaft disconnection under field load.

5. PTO Shaft Guard Rotating With the Shaft
If the PTO shaft guard is observed to rotate with the driveline shaft rather than remaining stationary, the bearing rings at one or both ends of the PTO shaft cover have failed, or the guard retention chains have detached from the tractor or implement frames. Stop operation immediately as a spinning guard presents a severe operator entanglement hazard. Do not resume operation until the bearing rings have been replaced and the retention chains are correctly re-attached to fixed frame points at both ends. Guard bearing ring replacement is a straightforward low-cost repair that must be treated as an urgent safety matter.

6. Shaft Difficult to Connect or Disconnect
Difficulty connecting the yoke to the tractor PTO stub shaft is most commonly caused by corrosion on the male or female spline surfaces, a damaged or weak spring-loaded locking pin, or misalignment between the tractor and Discbine caused by uneven ground during hitching. Clean and lightly oil the tractor PTO stub shaft splines, and inspect the locking pin for correct protrusion distance and spring force. Ensure the tractor and Discbine are on flat, level ground with the hitch fully aligned before attempting to connect. If the locking pin is damaged or weak, replace it from the PTO shaft parts catalog before field use.

Disc Mower PTO Shaft and Disc Mower Gearbox

The disc mower PTO shaft and the disc mower gearbox are two inseparable elements of the New Holland Discbine's complete drivetrain system. These two components work in series to transform the relatively low rotational speed of the tractor's PTO output (540 or 1000 rpm) into the high-speed, high-torque output required to spin each individual cutting disc at approximately 3,000 rpm. Neither component can function correctly without the other, and the health of one directly affects the service life of the other.

A disc mower gearbox is a heavy-duty sealed bevel or helical gear transmission that receives rotary power from the PTO driveline shaft and converts it into the high-speed rotary output required by the Discbine's cutting system. In the New Holland Discbine's modular cutterbar design, there are two distinct gearbox levels: the primary input gearbox at the machine end of the main PTO drive shaft, which distributes power to the conditioning rolls and the cutterbar series; and the individual disc module gear cases within the cutterbar beam itself, each of which is an independently sealed gear housing with its own hardened alloy drive shaft connecting it to the next module in the series. Each module's gear case steps the shaft speed up to the final 3,000 rpm disc cutting velocity. The precision-forged gears in these disc modules are the direct recipients of every torque load that the tractor PTO shaft introduces into the system, making the quality and condition of the PTO shaft absolutely fundamental to gearbox longevity.

The torque path begins at the tractor PTO output and travels through the main agricultural PTO shaft via its CV joint and telescoping tube to the Discbine primary input gearbox. This gearbox splits power to both the conditioning rolls and the secondary PTO driveline shaft that drives the cutterbar entry point. From there, each disc module's sealed gear case transmits and multiplies speed along the cutterbar chain. At every stage of this power path, the quality of the PTO shaft for New Holland discbine determines the smoothness, consistency, and safety of the torque being delivered. A worn or vibrating PTO shaft introduces cyclic torque variations and shock pulses that fatigue gear teeth, crack bearing races, and ultimately cause premature module failure. The FNT34 Combination Clutch on the PTO shaft with slip clutch acts as the critical buffer between all tractor-side disturbances and the expensive disc gearbox series.

When replacing either the disc mower PTO shaft or the disc mower gearbox, it is best practice to inspect both components simultaneously. A new PTO drive shaft for discbine fitted to a worn or damaged input gearbox will experience accelerated wear because the gearbox's worn input bearing creates runout and vibration that loads the new shaft's CV joint unevenly. Conversely, a rebuilt or new disc gearbox connected to an old, worn heavy duty PTO shaft with worn Cardan joints will not achieve its rated service life because the vibration from the worn shaft introduces fatigue loads into the new gear teeth from day one. CMN Transmission supplies both disc mower PTO shafts and disc mower gearboxes for the New Holland Discbine 1409 to 1442 series from a single integrated manufacturing source, allowing operators to source fully compatible, dimensionally verified components from one trusted supplier with complete technical support from pre-sale specification through to after-sales service.

Почему стоит выбрать сельскохозяйственные валы отбора мощности от CMN Transmission?

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, CMN maintains an inventory of more than 150,000 standard stock products and serves customers in over 53 countries across North America, Europe, South America, the Middle East, Africa, Southeast Asia, and Oceania.

What sets CMN Transmission apart in the agricultural PTO shaft market is a commitment to factory-direct pricing without sacrificing quality. As an integrated manufacturing and trading company, CMN eliminates the multiple dealer markups that inflate the cost of OEM replacement parts. Every tractor PTO shaft produced is manufactured using advanced CAD design, precision CNC machining, modern heat treatment processes, and rigorous multi-stage quality testing before dispatch. CMN's products carry ISO 9001, CE, and TS16949 certifications, ensuring compliance with international safety and performance standards across all agricultural and industrial markets. The TS16949 automotive-grade quality management certification in particular demonstrates the level of process discipline and manufacturing precision applied to every PTO driveline shaft that leaves the CMN production line.

Beyond product quality, CMN offers a level of technical customer support that large OEM brands often cannot match. The technical team provides pre-sale consultation to confirm spline configurations, PTO shaft dimensions, and clutch specifications for your exact tractor and implement combination. Customized PTO shaft parts for non-standard applications are available with detailed dimensional drawings upon request. After the sale, CMN's 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, harvest after harvest.

Часто задаваемые вопросы

Q: What type of PTO shaft do I need for a New Holland Discbine 1441 or 1442?
A: The New Holland Discbine 1441 and 1442 models require a heavy-duty equipped with a CAT 6 Constant Velocity main shaft and a Category 5 Double CV secondary shaft. These wide-cut 12-disc models transmit significant torque across wide operating angles during the swivel-hitch tongue movements, making the CV joint design essential for smooth, vibration-free power delivery. A combination clutch incorporating both friction-slip and overrunning functions is strongly recommended for protection against rock strike damage and drivetrain back-torque on both these large models.

Q: What is the difference between the CAT 4 and the CAT 6 PTO shaft for the Discbine?
A: CAT 4 (Category 4) PTO shaft parts are factory-fitted to many New Holland Discbines but are rated for lighter-duty torque transmission. CMN Transmission recommends upgrading to a CAT 6 configuration for improved service life and higher torque capacity. The larger PTO shaft tube diameter, heavier-wall PTO shaft tubing, and more robust CV joint assembly of the CAT 6 provide significantly better durability under the continuous high-load conditions of commercial hay and forage harvesting, particularly on the larger 10-disc and 12-disc Discbine models.

Q: What spline configuration do I need for the tractor end of the PTO shaft?
A: Most tractors paired with New Holland Discbines use either a 1.375-6 spline for standard 540 PTO shaft applications, or a 1.750-20 spline for higher-horsepower 1000 rpm PTO shaft configurations. The implement input end uses a 1.375-21 spline as standard across all Discbine 1409 through 1442 models. Please confirm your tractor's PTO output shaft PTO shaft sizes specification before ordering to ensure correct PTO shaft yoke selection and eliminate the need for a PTO shaft adapter.

Q: What is the standard overall PTO shaft length (OAL) for these Discbine models?
A: The standard PTO shaft length for the New Holland Discbine 1409-1442 series is approximately 36 inches OAL. This is a notably short shaft and operators must pay careful attention to PTO shaft dimensions when connecting to different tractor models. Verify that the shaft neither fully collapses nor fully extends during any field operation or headland turn. Over-turning on tight headlands is the primary risk with this short shaft configuration and can cause the telescoping tubes to bottom out, resulting in shaft damage or dangerous disconnection. Custom PTO shaft length options are available from CMN Transmission for non-standard tractor-implement distance requirements.

Q: What is the FNT34 Combination Clutch and why does the Discbine need it?
A: The FNT34 Combination Clutch is a dual-function torque protection device that combines a friction slip element with an overrunning (freewheel) element. As a PTO shaft with slip clutch, the friction component slips to absorb shock loads when the cutterbar strikes a rock or hard obstacle, preventing gear breakage in the expensive disc modules. The overrunning element allows the heavy rotating Discbine cutterbar and conditioning system to coast to a stop independently after PTO disengagement, preventing dangerous reverse torque from damaging the tractor's drivetrain. Both functions together provide comprehensive protection that a simple shear bolt PTO shaft or shear pin PTO shaft cannot match, because they activate immediately and continuously rather than requiring manual shear pin replacement after each event.

Q: Is this PTO shaft compatible with both 540 rpm and 1000 rpm PTO shafts?
A: Yes. The CMN Transmission PTO shaft for New Holland discbine is compatible with both 540 PTO shaft and 1000 rpm PTO shaft tractor configurations. The difference lies in the tractor-end yoke spline selection: 1.375-6 for 540 rpm tractors and 1.750-20 for 1000 rpm high-horsepower tractors. The shaft body, CV joints, FNT34 combination clutch, and PTO shaft universal joint assemblies are rated for both operating speeds. Confirm your tractor's PTO speed setting and the corresponding output stub shaft spline before placing your order, and our technical team will confirm the correct yoke specification.

В: Чем отличается вал отбора мощности CMN от вала отбора мощности Weasler в качестве замены?
A: Вал отбора мощности сельскохозяйственной техники от CMN Transmission — это высококачественная замена валу отбора мощности Weasler и аналогичным агрегатам премиум-класса. Оба изготовлены из легированной стали, обработаны с высокой точностью и подвергнуты термообработке. Ключевое преимущество CMN Transmission — это цены от производителя: будучи интегрированным производителем без дилерской наценки, CMN обычно предлагает экономию от 20 до 35 процентов по сравнению с аналогичными продуктами OEM-брендов. Продукция CMN имеет сертификаты ISO 9001, CE и TS16949, соответствуя или превосходя стандарты качества аналогов известных брендов, а техническая поддержка перед продажей от инженерной команды CMN гарантирует правильную спецификацию для вашей конкретной комбинации вала отбора мощности трактора и навесного оборудования до размещения заказа.

В: Как правильно измерить длину вала отбора мощности для моей дисковой клюшки?
A: Чтобы измерить правильную длину вала отбора мощности для вашей комбинации трактора и дисковой бороны, соедините трактор и навесное оборудование в нормальном рабочем положении и измерьте расстояние от центра выходного вала вала отбора мощности трактора до центра входного вала дисковой бороны при нормальной рабочей высоте обоих агрегатов. Собранный вал в рабочем положении не должен иметь телескопических трубок в минимальном или максимальном положении. Для моделей дисковой бороны с коротким валом также проверьте вал при полных углах поворота на разворотной полосе, чтобы убедиться, что он не выдвигается слишком сильно. Свяжитесь с технической командой CMN Transmission, предоставив эти измерения, и мы подтвердим правильные размеры вала отбора мощности для вашего применения.

В: Как часто следует смазывать вал отбора мощности на дисковой жатке New Holland?
A: Все шарниры равных угловых скоростей (ШРУС), карданные шарниры и шлицы скользящей вилки вала отбора мощности следует смазывать каждые 8 ​​часов работы в полевых условиях или, как минимум, один раз в день во время интенсивной сезонной эксплуатации. Используйте литиевую смазку класса EP2 или литий-комплексную смазку, предназначенную для высокоскоростных приводных систем. Смазывайте до тех пор, пока свежая смазка не начнет вытекать из уплотнений шарниров, подтверждая полную смазку всех подшипниковых поверхностей. Регулярная смазка является наиболее эффективным методом технического обслуживания для продления срока службы карданных шарниров и ШРУСов вала отбора мощности. Пренебрежение интервалами смазки является основной причиной преждевременного выхода из строя валов отбора мощности тракторов всех марок и спецификаций.

В: Может ли компания CMN Transmission изготовить вал отбора мощности на заказ для нестандартных применений?
A: Да. Компания CMN Transmission предоставляет полный спектр услуг по изготовлению валов отбора мощности на заказ и OEM-обслуживанию. Если для вашего применения требуется нестандартная длина вала отбора мощности, необычная конфигурация шлицов, другой тип сцепления, альтернативные размеры вала отбора мощности или особые размеры вала отбора мощности, не указанные в стандартном каталоге, наша инженерная команда рассмотрит ваши требования, предоставит чертеж для подтверждения и подготовит коммерческое предложение. Для изготовления валов отбора мощности на заказ обычно требуется минимальный объем заказа и срок выполнения от 15 до 25 рабочих дней в зависимости от сложности. Свяжитесь с технической командой, указав полную модель вашего трактора, модель навесного оборудования, рабочую скорость ВОМ и измеренное расстояние между валами, чтобы начать процесс.

В: Когда следует заменять защитный кожух вала отбора мощности?
A: Защитный кожух вала отбора мощности и крышка вала отбора мощности должны быть заменены при появлении трещин, разрывов, деформации от удара или воздействия ультрафиолетового излучения, в результате чего пластик стал хрупким или изменил цвет. Замените кожух, если подшипниковые кольца больше не позволяют внешней трубке кожуха оставаться неподвижной при вращении вала внутри нее, что указывает на неисправность подшипниковых колец. Осматривайте кожух в начале каждого сезона и после любого известного случая удара. Треснувший, сломанный или вращающийся кожух представляет серьезную опасность для оператора, и эксплуатация поврежденного кожуха никогда не допускается. Сменные секции кожуха, подшипниковые кольца и цепи крепления можно приобрести отдельно на складе запчастей для валов отбора мощности компании CMN Transmission для экономичного ремонта.

Отзывы покупателей

Marcus Thompson, Farm Manager, United States
«Мы используем New Holland 1411 на нашем 180-акровом люцерновом хозяйстве на Среднем Западе уже около шести лет, и оригинальный вал отбора мощности окончательно вышел из строя прошлой осенью после сильного удара камнем. Заказал замену ШРУСа CAT 6 у CMN Transmission, предварительно изучив их комбинированную систему сцепления. Получил его примерно за 10 дней, что, честно говоря, удивило меня для международного заказа. Он идеально подошел к входному валу навесного оборудования 1.375-21 без каких-либо закладок, а конец вала 1.375-6, предназначенный для трактора, без проблем зафиксировался на нашем коротком валу ВОМ 540. За весенний сезон уборки мы наработали около 220 часов, и он работает абсолютно надежно, без вибрации и перегрева на конце ШРУСа. Сцепление идеально проскальзывало, когда мы задели дренажную трубу в прошлом месяце, и спасло коробку передач. Честно говоря, лучше, чем оригинал. Заказал бы снова без колебаний и порекомендовал бы ребятам из нашего окружного кооператива».

Джеймс О'Брайен, подрядчик по заготовке сена, Австралия
«В бассейне реки Мюррей-Дарлинг у нас работают четыре косилки Discbiners, которые косят райграс и клеверное сено для местных молочных ферм. Замена вала отбора мощности — обычная часть технического обслуживания для нас в таких масштабах. За эти годы мы пробовали несколько разных поставщиков, но CMN Transmission показала наиболее стабильное качество и сроки поставки. Последняя партия из трех карданных валов CAT 6 с комбинированной муфтой FNT34 прибыла в Олбери из Кореи примерно за 12 дней. Все три идеально подошли к нашим моделям 1441 и 1442 без каких-либо проблем. Защитные кожухи прочные, а не из тонкостенного пластика, который иногда встречается на дешевых аналогах от сторонних производителей, а телескопическое движение трубок очень плавное. На данный момент два вала отработали более 300 часов и продолжают исправно работать. С удовольствием закажем снова, когда придет время».

Пьер Дюбуа, молочный фермер, Франция
«У меня New Holland 1412, и оригинальный вал уже ремонтировался один раз, прежде чем полностью износился вторичный ШРУС. Я посмотрел цены на оригинальные запчасти у местного дилера, и это было, честно говоря, шокирующе. Нашел компанию CMN Transmission в интернете, отправил им номера моделей и характеристики существующих шлицов. Их техническая команда ответила в течение нескольких часов, подтвердив правильную конфигурацию, включая двойной вторичный ШРУС и муфту FNT34, и цена оказалась чрезвычайно конкурентоспособной. Доставка в Нормандию заняла около 14 дней, и посылка прибыла очень хорошо упакованной. Вал отбора мощности подошел точно так, как было описано, шлицы 1.375-21 на конце для навесного оборудования были идеальными. Три прохода без каких-либо проблем. Очень хорошее соотношение цены и качества, и очень хорошее обслуживание».

Клаус Штайнберг, сельскохозяйственный подрядчик, Германия
«Как подрядчику, мне нужны запчасти, которые доставляются быстро и работают надежно. Компания CMN Transmission впечатлила меня тем, как быстро их техническая команда предоставила точные размеры валов и характеристики сцепления для моих дисковых косилок 1409 и 1410, обе из которых работают на разных конфигурациях шлицов трактора. Валы прибыли в обещанные сроки, оба правильно сконфигурированы и установлены без каких-либо доработок. После целого сезона коммерческой заготовки сена на нескольких фермах клиентов, примерно 400 часов работы на обоих валах, у меня не возникло ни одной проблемы. Качество защиты вала отбора мощности заметно лучше, чем у более дешевых запчастей от других поставщиков, которые я пробовал. В дальнейшем буду заказывать напрямую у CMN Transmission для всего нашего автопарка».

Уильям Фрейзер, фермер, занимающийся разведением овец и крупного рогатого скота, Новая Зеландия.
«Мы работаем на Южном острове с трактором New Holland 1441 на довольно сложных холмистых полях. Валы отбора мощности здесь сильно изнашиваются, потому что мы часто работаем под значительными углами на крутых склонах. Предыдущий вал, который я использовал, был дешевым, безымянным, и прослужил меньше сезона, прежде чем полностью вышел из строя ШРУС. ШРУС от CMN Transmission CAT 6 оказался совершенно другим. ШРУС справляется с работой под крутыми углами без вибрации и перегрева, а комбинированная муфта как минимум дважды в этом сезоне спасла редуктор Discbine от повреждений, вызванных ударами камней. Заказ был оформлен в начале декабря и прибыл до Рождества, что впечатляет, учитывая расстояние доставки из Кореи на Южный остров. Цена была очень справедливой по сравнению с тем, что дилер New Holland просил за оригинальный агрегат».

Роберт Уитмор, производитель сена, Канада
«На нашей сенокосной ферме в Саскачеване мы используем Discbine 1442, и найти запчасти для старых моделей на месте может быть настоящей проблемой. Компания CMN Transmission имела в наличии нужный карданный вал CAT 6 с комбинированной муфтой FNT34, готовый к отправке без необходимости ожидания специального заказа. Доставка в Саскачеван из Кореи заняла 11 дней, быстрее, чем я ожидал. Я заказал вариант карданного вала 1.750-20 для нашего старого трактора Versatile, и он подошел без каких-либо адаптеров. Конец навесного оборудования идеально совпал с входным валом 1442. Мы использовали его в течение всего сезона заготовки сена, скашивая смесь люцерны и тимофеевки, всего около 350 часов. Никаких проблем. Хороший продукт, приятные люди, с которыми приятно иметь дело. Простая сделка от заказа до установки».

Том Харрингтон, сельскохозяйственный подрядчик, Великобритания
«В Уилтшире мы используем две дисковые косилки Discbine, модели 1410 и 1412, для выполнения контрактных работ. После того, как оригинальный вал Weasler окончательно вышел из строя, заказали замену вала отбора мощности для модели 1412 у компании CMN Transmission. Цена у CMN была примерно на 30 процентов ниже, чем у дилера за аналог от Weasler, и качество действительно сопоставимо. Доставка заняла 10 дней. Измельчитель на модели 1412 создает большую нагрузку на вал отбора мощности, и комбинированная муфта уже однажды спасла коробку передач, когда мы наехали на старый закопанный столб забора на восстановленном поле. Качественная сборка, хорошо отделанный защитный кожух и простая установка. Приятно иметь дело с поставщиком, который действительно знает технические характеристики конкретных моделей Discbine, а не дает общие ответы».

Карлос Мендоса, управляющий фермой, Бразилия
«Мы управляем крупным молочным хозяйством по выращиванию люцерны с орошением в регионе Парана и используем дисковую косилку New Holland Discbine 1441 для нескольких укосов в месяц в течение основного сезона. Замена вала отбора мощности является для нас плановой процедурой технического обслуживания при такой интенсивности эксплуатации. После рекомендации управляющего фермой в Мату-Гросу-ду-Сул мы связались с CMN Transmission и были очень впечатлены технической поддержкой, включая подробные чертежи размеров главного вала CAT 6 CV и вторичного вала Category 5 Double CV перед заказом. Валы прибыли примерно через 16 дней по нашему адресу в Куритибе. Установка была простой. Сейчас у нас уже целый сезон укосов, несколько укосов в месяц, и вал держится исключительно хорошо. Момент проскальзывания комбинированной муфты установлен правильно и стабильно. Хороший продукт и конкурентоспособная заводская цена».

Диего Гутьеррес, производитель люцерны, Аргентина
«Я занимаюсь выращиванием люцерны в провинции Мендоса, и мой трактор New Holland 1441 — сердце нашей уборочной операции. Когда после нескольких сезонов интенсивной эксплуатации начал изнашиваться вторичный ШРУС, мне срочно понадобилась надежная замена, прежде чем откроется основной период уборки. Компания CMN Transmission подтвердила правильную спецификацию для 1441 в течение одного рабочего дня, включая комбинированное сцепление, двойной вторичный ШРУС и правильную вилку трактора. Доставка в Мендосу заняла 18 дней. Вал подошел без каких-либо доработок. Два полных сезона уборки спустя он продолжает работать без каких-либо проблем. Качество телескопического защитного кожуха также превзошло мои ожидания от продукта стороннего производителя. Отличное соотношение цены и качества, и я буду постоянным клиентом».