{"id":6862,"date":"2026-04-24T02:15:31","date_gmt":"2026-04-24T02:15:31","guid":{"rendered":"https:\/\/korea-transmission.com\/?post_type=product&p=6862"},"modified":"2026-04-24T06:36:22","modified_gmt":"2026-04-24T06:36:22","slug":"pto-shaft-for-alloway-shredders-s15cd-s20cd-s22cd-s25cd-s27cd","status":"publish","type":"product","link":"https:\/\/korea-transmission.com\/de\/produkt\/pto-shaft-for-alloway-shredders-s15cd-s20cd-s22cd-s25cd-s27cd\/","title":{"rendered":"Zapfwelle f\u00fcr Alloway-H\u00e4cksler S15CD, S20CD, S22CD, S25CD, S27CD"},"content":{"rendered":"

Reliable PTO Shaft for Alloway Shredder Models<\/h2>\n

PTO Shaft for Alloway Shredder Model: S15CD, S20CD, S22CD, S25CD, S27CD<\/strong><\/p>\n

The PTO Shaft for Alloway Shredders S15CD, S20CD, S22CD, S25CD, and S27CD from CMN Transmission is a precision-engineered tractor PTO shaft designed as a direct replacement for the original Weasler 55N splined PTO driveline assembly. Compatible with both 2-point and 3-point hitch configurations as well as trailing pull-type Alloway shredder setups, this agricultural PTO shaft is available in both 540 RPM and 1000 RPM variants to match your tractor’s power take-off output. The 55N thru-bolt overrunning device eliminates backlash and protects driveline components from sudden shock loads, making it the preferred PTO drive shaft choice for farmers and agricultural contractors worldwide who rely on Alloway shredding equipment in tough field conditions.<\/p>\n

Engineered for demanding field performance, this flail shredder PTO shaft excels across a wide spectrum of applications including crop stalk shredding, pasture maintenance, roadside clearing, orchard and vineyard upkeep, and ditch bank mowing. The 20-spline, 1.750-inch major diameter interface ensures a solid and vibration-free connection to Alloway shredder input shafts with no groove, where the overrunning clutch function is critical. Every PTO driveline shaft for flail shredder from CMN Transmission passes rigorous quality inspections under ISO 9001 and CE certification standards, and is backed by years of OEM and aftermarket manufacturing experience. Whether you are replacing a worn-out original unit or upgrading to a more robust replacement of Weasler PTO shaft, CMN Transmission delivers the exact fit, durability, and value you need.<\/p>\n

\"Zapfwelle<\/p>\n

<\/h2>\n

Alloway Shredders utilize various types of clutches at the point where the implement connects. Certain clutches are highly specialized and require replacement with an identical unit, while others are more versatile and can be replaced with multiple optional devices. The crucial factor to consider is whether the input shaft has a groove like the output of the tractor’s PTO.<\/p>\n

\"Traktor-Abtriebswelle\"<\/p>\n

If there is no groove, then the clutch must be replaced by an identical unit. Overrunning protection is more necessary than torque protection.<\/p>\n

3 Point Assemblies<\/h2>\n

Alloway Shredder PTO for 2 and 3 point attachments, Weasler 55N splined PTO<\/p>\n

\"PTO<\/p>\n

Assemblies come for both 540 RPM and 1000 RPM – please contact us for the specifications needed<\/p>\n

Pull Type<\/h2>\n

Alloway Shredder PTO Trailing Hitch, Weasler 55N CV splined PTO<\/p>\n

\"PTO<\/p>\n

55N Bolt through style overrunning device for shafts with no groove<\/p>\n\n\n\n\n\n\n\n\n\n\n
\u00a0<\/strong><\/td>\nTechnische Daten<\/strong><\/td>\n<\/tr>\n
\"PTO<\/td>\nArt des Teils:<\/span><\/td>\n\u00dcberlaufvorrichtung<\/span><\/td>\n<\/tr>\n
Serie:<\/span><\/td>\n55N<\/span><\/td>\n<\/tr>\n
Major diameter:<\/span><\/td>\n1.750<\/span><\/td>\n<\/tr>\n
Number of splines:<\/span><\/td>\n20<\/td>\n<\/tr>\n
cuj-end:\u00a0<\/span><\/td>\n8.75<\/span><\/td>\n<\/tr>\n
Connection:\u00a0<\/span><\/td>\nthru-bolt<\/span><\/td>\n<\/tr>\n
Style:\u00a0<\/span><\/td>\ninside bolt<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Features of PTO Shaft for Alloway Shredders<\/h2>\n

1. 55N Overrunning Clutch Protection
\nThe Weasler 55N inside-bolt style overrunning device is specifically designed for Alloway shredder input shafts that have no groove. Unlike torque-limiting slip clutches, this overrunning device prevents the implement’s inertia from driving the tractor driveline in reverse when the operator disengages the PTO, protecting the tractor gearbox, U-joints, and PTO shaft yoke from catastrophic damage during deceleration cycles common in heavy shredding operations.<\/p>\n

2. Dual RPM Compatibility (540 & 1000)
\nAvailable in both 540 PTO shaft and 1000 PTO shaft configurations, this driveline shaft matches the full range of tractors used with Alloway S-series shredders. Whether your tractor outputs 540 RPM for lighter-duty tasks or 1000 RPM for high-capacity commercial shredding, CMN Transmission supplies the correct-spec PTO driveline shaft to maintain optimal blade tip speed and cutting efficiency across all Alloway S15CD through S27CD models.<\/p>\n

3. Thru-Bolt Inside-Bolt Style Design
\nThe thru-bolt, inside-bolt connection method provides exceptional clamping strength and field-serviceability. Unlike press-fit or welded assemblies, the thru-bolt design allows for simple field replacement of the overrunning device without special tooling. The 20-spline, 1.750-inch major diameter bore ensures near-zero backlash fit on the Alloway shredder input shaft, minimizing vibration, noise, and premature wear of the PTO shaft universal joint and PTO shaft yoke components.<\/p>\n

4. Heavy-Duty PTO Shaft Guard Included
\nEvery heavy duty PTO shaft assembly includes a full-length PTO shaft guard and PTO shaft cover that meets CE safety standards. The robust shield assembly prevents entanglement hazards in the field and protects the PTO shaft tube and PTO shaft tubing from debris impact damage during shredding operations. The guard is securely anchored using the standard chain retention system compatible with all Alloway S-series shredder hitch frames.<\/p>\n

5. Multi-Hitch Versatility
\nThis tractor PTO drive shaft is engineered for both 3-point mounted Alloway shredders and trailing pull-type configurations with a CV (constant velocity) joint assembly on pull-type versions. The CV joint eliminates driveline vibration during angular operation on uneven terrain, making it ideal for hillside pasture maintenance, ditch bank clearing, and contoured field applications where the shredder articulates significantly relative to the tractor axis.<\/p>\n

6. ISO 9001 & CE Certified Quality
\nCMN Transmission’s custom PTO shaft products are manufactured under strict ISO 9001 quality management and CE marking protocols. Each agricultural Zapfwelle<\/strong><\/a> undergoes dimensional inspection, spline gauge verification, torque testing, and surface treatment review before shipment. Our PTO shaft parts meet or exceed OEM specifications, offering a true drop-in replacement for Weasler-branded components without the premium OEM price tag, and available for custom PTO shaft orders per your required PTO shaft dimensions and PTO shaft length.<\/p>\n

\"Zapfwelle<\/p>\n

How Does the Flail Shredder PTO Shaft Work<\/h2>\n

1. Power Transmission Pathway<\/strong>
\nThe PTO shaft tractor connection begins at the tractor’s rear power take-off stub, where a spring-loaded quick-release collar locks the female splined yoke of the PTO driveline shaft onto the tractor’s 6-spline or 21-spline output stub, depending on your tractor’s configuration. Engine torque is transmitted at the selected PTO speed (either 540 RPM or 1000 RPM) through the outer profile of the splined yoke and into the telescoping PTO shaft tube assembly. The telescoping tube consists of an inner profile tube sliding within an outer profile tube, allowing the overall PTO shaft length to extend and compress as the shredder rises and falls over uneven terrain without interrupting torque delivery.<\/p>\n

2. Universal Joint Angular Compensation<\/strong>
\nAt each end of the PTO shaft tube, a cross-and-bearing type PTO shaft u joint (universal joint) allows the shaft to transmit torque through angular misalignment between the tractor PTO axis and the shredder input shaft axis. For 3-point mounted Alloway S-series shredders, a standard double-universal-joint shaft handles the modest articulation angles typically encountered. For trailing pull-type Alloway shredders, a constant velocity (CV) joint assembly at the tractor end cancels the velocity fluctuations that occur at higher articulation angles, ensuring smooth and vibration-free power delivery even when turning at headlands with the shredder offset significantly from the tractor centerline.<\/p>\n

3. Overrunning Clutch Function<\/strong>
\nThe most critical component in this PTO Shaft for Alloway Shredder is the Weasler 55N overrunning device located at the implement end of the shaft assembly. Unlike a PTO shaft with slip clutch or slip clutch PTO shaft that protects against overload torque, an overrunning device is specifically engineered to prevent the implement from back-driving the tractor driveline. Alloway flail shredders carry significant rotational inertia in their rotor assemblies. When the tractor operator disengages the PTO, the rotor continues spinning for many seconds due to stored kinetic energy. Without an overrunning device, this spinning mass would force the tractor’s driveline to rotate in reverse, causing severe damage to the PTO gearbox, driveshaft U-joints, and transmission internals. The 55N overrunning clutch uses a ratchet-and-pawl or cam-and-roller mechanism that transmits torque in only one direction (tractor to implement), freewheeling in the other (implement to tractor), completely isolating the tractor from the shredder’s residual inertia.<\/p>\n

4. PTO Shaft Guard Safety System<\/strong>
\nEncasing the entire rotating assembly is a multi-section PTO shaft guard and PTO shaft cover constructed from high-density polyethylene (HDPE) or steel, depending on the assembly configuration. The guard is supported on plain bearings at each end, allowing it to remain stationary while the inner shaft rotates at full PTO speed. Retention chains attached to the guard anchoring points on the tractor and implement prevent the guard from rotating if the bearings seize. This CE-compliant safety system protects operators and bystanders from the extreme hazard of contact with a rotating PTO drive shaft in field conditions where loose clothing, crop debris, or bystanders may approach the equipment.<\/p>\n

5. Shear Bolt Protection (Optional Configurations)<\/strong>
\nOn certain Alloway shredder configurations where torque overload protection is desired in addition to overrunning protection, a secondary shear bolt PTO shaft arrangement using a PTO shaft shear bolt coupler can be incorporated. The shear pin PTO shaft design uses a precisely calibrated bolt or pin that fractures at a defined torque threshold, immediately disconnecting the driveline to prevent damage when the rotor strikes a hard embedded object such as a rock or stump root. This sacrificial protection means a readily available and inexpensive replacement shear bolt PTO shaft component absorbs the overload energy rather than allowing it to destroy expensive gearbox or driveline components.<\/p>\n

\"Zapfwelle<\/p>\n

Anwendungsszenarien<\/h2>\n

1. Zerkleinern von Ernter\u00fcckst\u00e4nden
\nAfter grain or row crop harvest, Alloway shredders driven by this agricultural PTO shaft rapidly reduce standing corn stalks, sorghum stems, sunflower stalks, and soybean stubble into fine mulch. The high-inertia flail rotor powered by the 540 or 1000 rpm PTO shaft generates the impact energy needed to shred tough, woody crop residue efficiently across wide cutting widths, preparing the field for the next crop cycle and reducing disease carryover.<\/p>\n

2. Roadside Maintenance
\nMunicipalities, highway departments, and contract mowing services rely on Alloway S-series shredders and this tractor PTO shaft for maintaining roadsides, verges, and median strips. The pull-type Alloway configurations with CV PTO driveline shaft allow the shredder to offset significantly from the tractor path, reaching into ditches and around guardrails where 3-point mounted equipment cannot easily access, while maintaining smooth power delivery through wide steering angles.<\/p>\n

3. Pasture Maintenance
\nEffective pasture management requires periodic shredding of rank grass, weeds, thistle, and unpalatable forage species to encourage fresh, nutritious regrowth. This PTO drive shaft for flail shredder delivers reliable, season-after-season performance when mowing cattle, sheep, and horse pastures. The flail cutting action, versus a rotary blade, is far safer in stony paddocks, reducing the risk of projectile stones and making it the preferred choice for livestock operations.<\/p>\n

4. Instandhaltung von Parks und Schulgel\u00e4nden
\nFor large-area turf and grounds management in parks, sports complexes, and school campuses, the Alloway shredder paired with this PTO shaft tractor combination provides efficient, economical coverage of expansive open areas. The flail cutting action produces a finely mulched finish suitable for public-access areas, and the overrunning clutch protection of the 55N device ensures rapid, safe stops when operators encounter pedestrians or obstacles on shared-use grounds.<\/p>\n

5. Obst- und Weinbergspflege
\nOrchard floors and vineyard alleys require frequent vegetation control to manage competition for moisture and nutrients, while also mulching fallen fruit and pruning debris. The compact, narrow-profile Alloway S15CD and S20CD models driven by this flail shredder PTO shaft fit between tree rows and trellis systems, shredding cover crops, prunings, and vine debris in place. The mulch returned to the soil improves moisture retention and organic matter levels throughout the growing season.<\/p>\n

6. Graben- und Uferpflege
\nIrrigation ditches, drainage channels, and earthen bank faces require regular vegetation control to maintain water flow capacity and structural integrity. The trailing hitch Alloway shredder models S22CD, S25CD, and S27CD, connected via this PTO driveline shaft for flail shredder with CV joint, can follow bank contours at significant side slopes. The overrunning protection of the 55N clutch is especially valuable in these applications, where rapid engagement and disengagement cycles are common as the operator navigates around culverts and access points.<\/p>\n

\"Zapfwelle<\/p>\n

How to Install PTO Shaft on Alloway Shredder<\/h2>\n

Step 1: Safety First-Disengage and Shut Down<\/strong>
\nBefore beginning any installation work, ensure the tractor engine is completely shut off, the PTO control is in the disengaged position, and the parking brake is applied. Allow at least 60 seconds after engine shutoff for any residual rotor inertia in the Alloway shredder to fully dissipate before approaching the PTO connection area. Never attempt to install or remove the PTO drive shafts while any drivetrain component is in motion.<\/p>\n

Step 2: Verify Shaft Specifications and PTO Shaft Sizes<\/strong>
\nConfirm that the replacement PTO shaft dimensions match your Alloway shredder model requirements. Verify the tractor PTO output is 540 RPM or 1000 RPM as appropriate to your selected shaft, and that the tractor PTO stub shaft spline count and profile match the incoming yoke. Cross-reference the shredder model plate against the compatible models listed (S15CD, S20CD, S22CD, S25CD, S27CD). Check the required overall PTO shaft length by measuring the distance between tractor PTO stub and shredder input shaft end in the operating position.<\/p>\n

Step 3: Install the Overrunning Clutch on Shredder Input Shaft<\/strong>
\nSlide the 55N overrunning device onto the Alloway shredder input shaft, aligning the 20 internal splines with the shaft. Because the shredder input shaft has no groove, the thru-bolt style connection is used: insert the supplied hardware bolt through the hub and shaft cross-bore, and torque to the specification listed on the clutch assembly documentation. Confirm the overrunning direction is correct before tightening; the clutch should freewheel when the outer housing is rotated opposite to normal PTO direction.<\/p>\n

Schritt 4: Traktorseitige Gabel mit Zapfwellenstummel verbinden<\/strong>
\nPosition the tractor-end yoke of the tractor PTO drive shaft assembly over the tractor PTO stub shaft, pushing firmly until the quick-release collar clicks into the stub groove. Tug the shaft rearward to confirm it is fully locked. If your tractor PTO stub uses a non-standard spline count or a keyed interface, contact CMN Transmission to discuss the correct PTO shaft adapter to bridge the connection without compromising structural integrity or torque capacity.<\/p>\n

Step 5: Secure PTO Shaft Guard Retention Chains<\/strong>
\nAttach the PTO shaft guard retention chains to the fixed anchor points on the tractor drawbar or hitch frame and the shredder frame. The chains must have enough slack to accommodate the full working articulation range of the hitch without becoming taut, but short enough to prevent the guard from rotating if the support bearings seize. Inspect the PTO shaft cover for cracks, broken bearings, or missing sections before use, as a damaged guard poses a serious safety hazard.<\/p>\n

Step 6: Test Run and Final Inspection<\/strong>
\nWith all personnel clear of the equipment, start the tractor and engage the PTO at low throttle to perform an initial test run. Listen for unusual vibration, rattling, or binding sounds that may indicate shaft misalignment or incorrect assembly. Gradually increase to the rated operating RPM and observe the driveline for any wobble or instability. Shut down and re-inspect all connection points after the first 30 minutes of operation to verify that no hardware has loosened due to initial settling.<\/p>\n

\"Zapfwelle<\/p>\n

Wartungstipps<\/h2>\n

1. Daily Pre-Operation Inspection
\nBefore each use, visually inspect the entire PTO driveline shaft assembly for cracks in the guard, loose retaining hardware, missing grease nipple caps, or signs of corrosion on the telescoping PTO shaft tube. Check that the overrunning clutch freewheels smoothly in the correct direction by hand rotation. Verify that the guard retention chains remain correctly attached and at the appropriate length. Any visual anomalies should be corrected before operating to prevent in-field failures.<\/p>\n

2. Lubrication of Universal Joints
\nEach PTO shaft u joint cross-and-bearing assembly must be greased every 8 hours of operation using a lithium-complex or moly-fortified EP2 grease through the supplied grease nipples. Pump grease until fresh lubricant appears at the bearing seals on all four trunnion positions. Under-greasing is the single most common cause of premature PTO shaft universal joint failure, particularly in high-load flail shredder applications where vibration and angular cycling accelerate bearing wear.<\/p>\n

3. Telescoping Tube Lubrication
\nThe inner and outer PTO shaft tubing profiles must be kept clean and lubricated to prevent binding and corrosion seizure. Every 50 hours, collapse the telescoping tube fully, clean the inner profile with a rag, and apply a thin film of multipurpose grease to the inner surface before re-extending. Seized telescoping profiles are the second most common cause of PTO drive shaft failure and can create dangerous length-locking conditions that overstress the universal joints and shaft yokes during hitch articulation.<\/p>\n

4. Overrunning Clutch Service
\nThe 55N overrunning device should be disassembled and cleaned at least once per season. Remove the clutch from the shredder input shaft, disassemble per the manufacturer’s service instructions, clean all internal components with a suitable solvent, inspect the ratchet pawls or cam rollers for wear or pitting, and repack with a fresh application of grease before reassembly. A clutch that fails to freewheel correctly will transmit reverse shock loads directly to the tractor driveline on every PTO disengagement.<\/p>\n

5. Guard Bearing and Shield Inspection
\nThe PTO shaft guard support bearings at each end of the shield should be inspected seasonally for wear and replaced if they spin roughly or allow the guard to contact the rotating shaft. A guard that contacts the spinning PTO shaft tube generates heat, accelerates wear, and may ignite crop debris, creating a serious fire hazard. Replace the full PTO shaft cover assembly if the shield is cracked, punctured, or has lost more than 20% of its structural sections.<\/p>\n

6. Off-Season Storage
\nAt the end of the shredding season, clean the entire agricultural PTO shaft assembly with a pressure washer, dry thoroughly, and apply a protective rust-inhibitor coating to all exposed metal surfaces, especially the telescoping PTO shaft tube profiles. Grease all nipples fully, store the shaft in a horizontal or slightly inclined position to prevent water pooling, and protect it from UV exposure which can degrade the HDPE guard material over extended periods.<\/p>\n

\"Zapfwelle<\/p>\n

H\u00e4ufige Fehlersuche bei Zapfwellenantrieben<\/h2>\n

1. \u00dcberm\u00e4\u00dfige Vibrationen w\u00e4hrend des Betriebs<\/strong>
\nExcessive vibration is most commonly caused by worn or dry PTO shaft u joint bearings, an out-of-balance telescoping tube assembly due to impact damage, or incorrect overall shaft angle exceeding the rated operating angle of the universal joints. Check all four U-joint bearing cups for play by gripping each cross arm and attempting to rotate it. Replace any cross-and-bearing kits showing movement. Inspect the inner and outer PTO shaft tube profiles for dents or bends that may cause imbalance.<\/p>\n

2. Shaft Telescoping Tube Binds or Seizes<\/strong>
\nA binding telescoping assembly is caused by insufficient lubrication, corrosion, or impact deformation of the profile tube sections. Remove the shaft from the tractor and shredder, separate the inner and outer profiles completely, clean with penetrating oil if seized, and inspect the profiles for deformation. If the profiles are deformed beyond re-lubrication help, the PTO shaft tube sections must be replaced. This is a critical repair as a locked shaft cannot telescope during hitch articulation, placing catastrophic stress on the U-joints and PTO shaft yoke components.<\/p>\n

3. Overrunning Clutch Does Not Freewheel<\/strong>
\nIf the 55N overrunning device transmits torque in both directions (i.e., back-drives the tractor when you manually spin the shredder input shaft), the internal ratchet pawls or cam rollers may be seized due to lack of lubrication, corrosion, or wear. Disassemble the clutch immediately, inspect the cam surfaces and roller or pawl components for damage, and replace worn parts or the complete clutch assembly if necessary. Operating with a non-functional overrunning device risks serious damage to the tractor PTO gearbox on every deceleration cycle.<\/p>\n

4. Clicking or Knocking Noise from U-Joints<\/strong>
\nA rhythmic clicking or knocking at each shaft revolution indicates worn or pitted universal joint bearing cups. This is a progressive failure that will result in complete U-joint separation if not addressed promptly. Stop using the shaft immediately and replace the cross-and-bearing kit. CMN Transmission supplies complete replacement PTO shaft parts including cross-and-bearing kits in standard PTO shaft sizes compatible with the 55N series assembly. Timely replacement prevents secondary damage to the shaft yokes and guard bearings.<\/p>\n

5. Guard Rotates During Operation<\/strong>
\nIf the PTO shaft guard rotates with the shaft rather than remaining stationary, the guard support bearings have failed or the retention chain has come loose. Stop operation immediately, as a rotating guard creates a severe entanglement hazard. Inspect both support bearings at the tractor and implement ends of the guard. Replace failed bearings with correct OEM-spec units. Re-attach the retention chains to both anchor points and verify correct slack adjustment before resuming work.<\/p>\n

6. Thru-Bolt Connection Loosens Repeatedly<\/strong>
\nIf the thru-bolt hardware on the 55N inside-bolt style clutch loosens during operation, the cross-bore in the Alloway input shaft may be worn oversize or the hardware may be incorrect. Remove the clutch, inspect the cross-bore diameter, and replace the bolt with the correct grade and diameter as specified in the Weasler 55N installation manual. Apply a suitable threadlocking compound to the bolt threads before reinstallation and torque to specification. Do not over-torque, as this can distort the clutch hub bore and cause spline damage on the PTO shaft adapter or input shaft.<\/p>\n\n\n\n
\"Zapfwelle<\/td>\n\"Zapfwelle<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Flail Shredder PTO Shaft & Flail Mower Gearbox<\/h2>\n

A flail shredder PTO shaft is the mechanical power conduit between a tractor and a flail-type cutting machine. The shaft consists of several integrated components: a tractor-end yoke, a set of telescoping PTO shaft tube profiles, two or more universal joints (PTO shaft u joint), an implement-end yoke or clutch assembly, and a full-length PTO shaft guard. In the case of the Alloway S-series shredders, the implement-end terminates in the Weasler 55N overrunning device that connects to the shredder input shaft. The shaft’s primary function is to transmit rotational power at a rated torque and speed (540 or 1000 RPM) from the tractor PTO output to the flail shredder’s rotor shaft, providing the kinetic energy required for the high-speed impact cutting action of the flail blades.<\/p>\n

The flail mower gearbox (also called a flail shredder gearbox or mulcher gearbox) is a gear-driven speed-increasing or speed-converting transmission unit mounted directly to the flail shredder frame, positioned between the incoming PTO shaft connection and the rotor shaft. Its primary function is to take the relatively modest input speed from the tractor PTO (540 or 1000 RPM) and convert it to the much higher rotor speed required for effective flail cutting, often in the range of 1,500 to 3,500 RPM depending on the machine’s design. The gearbox houses helical or spiral bevel gears, sealed roller or tapered roller bearings, and a robust cast iron or cast steel housing, all engineered to handle the continuous high-torque and high-speed demands of commercial shredding operations.<\/p>\n

The flail shredder PTO shaft and the flail mower gearbox are mechanically interdependent components of the same drivetrain system. Power flows from the tractor engine, through the tractor’s internal gearbox to the PTO output stub, through the PTO driveline shaft to the gearbox input, and from the gearbox output to the rotor shaft that carries the flail blades or hammers. If either component is undersized, worn, or mismatched, the entire system’s performance and reliability suffers. A PTO shaft that delivers vibration due to worn U-joints will accelerate gearbox input bearing failure. Conversely, a gearbox that has lost gear mesh due to internal wear will place abnormal cyclic torque loads on the PTO shaft’s universal joints and telescoping profiles.<\/p>\n

CMN Transmission supplies both PTO shaft for flail shredder assemblies and compatible flail mower gearbox units, making it your one-stop source for complete drivetrain replacement or repair on Alloway and other major-brand flail shredders. Whether you need a direct replacement of Weasler PTO shaft for an Alloway S15CD through S27CD or a matched gearbox input seal and bearing kit, our technical sales team can assist you in selecting correctly matched components to restore factory drivetrain performance and extend equipment life significantly.<\/p>\n

\"Schlegelm\u00e4her-Getriebe\"<\/p>\n

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

CMN Transmission is a specialized manufacturer and global supplier of agricultural PTO shafts, tractor PTO drive shafts, and related driveline components, serving customers across North America, Europe, Oceania, South America, Africa, and Asia. With more than two decades of manufacturing experience in precision driveline components, our facility operates with complete in-house processing capability, including CNC turning, gear hobbing, spline milling, heat treatment, surface finishing, and comprehensive quality inspection, giving us full control over every dimension and material property in our PTO driveline shaft products.<\/p>\n

Our ISO 9001, CE, and TS16949 certifications are not simply wall decorations; they represent documented, audited manufacturing processes that ensure every heavy-duty PTO shaft leaving our facility meets or exceeds OEM dimensional and material specifications. We perform 100% dimensional inspection on critical spline and bearing interfaces, and torque-test overrunning and slip clutch assemblies before dispatch. Our customers, from individual farm operators to multinational equipment distributors, trust that when a CMN Transmission shaft arrives, it will install correctly, first time, every time.<\/p>\n

What truly differentiates CMN Transmission is our commitment to responsiveness and flexibility. Unlike large OEM brands, where standard lead times run 3-6 weeks for non-stocked items, CMN Transmission maintains a broad stock of standard PTO shaft sizes and can manufacture custom PTO shaft assemblies to specific PTO shaft dimensions on short lead times. Our technical sales team includes engineers with deep knowledge of PTO driveline application engineering, ready to help you select the correct shaft specification whether that’s a standard replacement of Weasler PTO shaft or a fully custom PTO shaft adapter configuration for an unusual OEM application.<\/p>\n

For dealers, distributors, and fleet operators, CMN Transmission offers OEM and ODM private-label supply, competitive volume pricing, and dedicated account management. Our products have earned the trust of customers on six continents by delivering consistent quality, competitive pricing, and reliable logistics performance season after season. Contact us today to discuss your PTO shaft tractor or flail shredder PTO shaft requirements and experience the CMN Transmission difference.<\/p>\n

\"Fabrikausr\u00fcstung\"\"Fabrikausr\u00fcstung\"<\/p>\n

H\u00e4ufig gestellte Fragen<\/h2>\n

Q: What is the difference between a 540 PTO shaft and a 1000 PTO shaft for Alloway shredders?<\/strong>
\nA: A 540 PTO shaft is designed for tractors whose PTO output rotates at 540 revolutions per minute, typically tractors under 80 horsepower. A 1000 PTO shaft is engineered for tractors producing PTO speeds of 1000 RPM, common on machines above 80 horsepower. The Alloway S-series shredders can be configured for either PTO speed, and using the wrong shaft with the wrong tractor results in blade speed that is either too slow (reduced cutting efficiency) or too high (potential overload damage). Always match the shaft to the tractor’s rated PTO output speed.<\/p>\n

Q: Is this a direct replacement for a Weasler PTO shaft on Alloway S15CD, S20CD, S22CD, S25CD, S27CD models?<\/strong>
\nA: Yes. This product is an engineered replacement of Weasler PTO shaft for the above Alloway shredder models. The overrunning clutch is Weasler 55N series compatible, using identical spline specifications (20 splines, 1.750-inch major diameter) and the same thru-bolt inside-bolt connection method as the original. No adapters or modification of the shredder input shaft is required for a correct installation. Contact our technical team to confirm compatibility if your shredder model variant differs from those listed.<\/p>\n

Q: What is the correct PTO shaft length for my Alloway shredder, and can I order a custom PTO shaft length?<\/strong>
\nA: The correct PTO shaft length depends on your specific tractor model and the hitch geometry. To measure: attach the shredder to the tractor in the normal working position, measure the distance from the tractor PTO stub face to the shredder input shaft end, and order a shaft whose collapsed length is no shorter than this measurement minus the minimum overlap of the telescoping tubes (typically 1\/3 of the inner tube length). CMN Transmission supports custom PTO shaft orders to specified PTO shaft dimensions for unusual hitch geometries.<\/p>\n

Q: Why does my Alloway shredder require an overrunning clutch rather than a slip clutch PTO shaft?<\/strong>
\nA: Alloway shredders’ input shafts often have no groove, which means only a thru-bolt style overrunning clutch can be used for connection – not a groove-style slip clutch. Beyond the mechanical connection requirement, flail shredder rotors carry significant stored kinetic energy at operating speed. When the PTO is disengaged, the rotor back-drives the tractor driveline if no overrunning device is present. A slip clutch PTO shaft provides torque overload protection but does not prevent back-driving, making it unsuitable as the primary clutch type in this application.<\/p>\n

Q: How often should I grease the PTO shaft u joint on my Alloway shredder driveline?<\/strong>
\nA: Every PTO shaft u joint should be greased every 8 operating hours using EP2 lithium-complex grease. In heavy-duty applications such as commercial crop stalk shredding or roadside vegetation clearing, greasing every 4-6 hours is advisable. Insufficient lubrication is the primary cause of premature cross-and-bearing failure. Pump grease slowly until fresh lubricant exits at all four bearing seal faces; a U-joint that accepts no grease or shows no grease exit has likely seized internally and requires replacement.<\/p>\n

Q: Can I use this PTO shaft on other flail shredder brands beyond Alloway?<\/strong>
\nA: This specific assembly is designed and dimensioned for Alloway S15CD, S20CD, S22CD, S25CD, and S27CD shredders using the Weasler 55N overrunning device. If another brand’s flail shredder uses the same 55N series clutch with identical spline specifications, it may be compatible. However, the overall shaft length, tube profile size, and yoke designs may differ between brands. CMN Transmission can supply PTO shaft for flail shredder assemblies configured for many other brands; contact our technical team with your make, model, and PTO shaft dimensions for a compatibility assessment.<\/p>\n

Q: What PTO shaft sizes and PTO shaft dimensions does CMN Transmission carry?<\/strong>
\nA: CMN Transmission maintains an extensive range of PTO shaft sizes from light-duty Series 4 (CAT4) through heavy-duty Series 8 (CAT8) profiles, covering the full range of agricultural and municipal PTO applications. PTO shaft dimensions including collapsed length, extended length, tube outer diameter, yoke bore diameter, spline count, and major diameter are all configurable to your requirements. We also stock standard cross-and-bearing kits, PTO shaft yoke assemblies, PTO shaft adapter components, and PTO shaft guard replacement sections for most series.<\/p>\n

Q: What certifications does CMN Transmission’s agricultural PTO shaft carry?<\/strong>
\nA: CMN Transmission’s agricultural PTO shaft products are manufactured under ISO 9001 quality management certification and carry CE marking in accordance with EU Machinery Directive requirements for rotating driveline components. Our manufacturing facilities also hold TS16949 automotive-grade quality certification, reflecting the same rigorous process control standards applied to our agricultural driveline products. Full certification documentation can be supplied upon request for import compliance or fleet procurement purposes.<\/p>\n

Q: Does the PTO shaft come with a guard, and does it meet safety requirements?<\/strong>
\nA: Yes. Each heavy duty PTO shaft assembly from CMN Transmission includes a full-length CE-compliant PTO shaft guard and PTO shaft cover with retention chains. The guard meets the requirements of ISO 4254-1 and relevant EU machinery safety directives for power driveline protection. The guard is constructed from impact-resistant HDPE on the shield sections with steel end cones and plain support bearings at each end, designed to remain stationary while the inner driveline rotates at up to 1000 RPM.<\/p>\n

Q: Can CMN Transmission supply OEM or custom-branded PTO shafts for distributors and dealers?<\/strong>
\nA: Absolutely. CMN Transmission has extensive OEM and ODM supply experience, offering fully custom PTO shaft production to distributor and manufacturer specifications, including custom shaft lengths, profile sizes, yoke configurations, overrunning and slip clutch types, and private-label packaging. Minimum order quantities for custom production runs are negotiable depending on shaft specification complexity. We work with agricultural equipment manufacturers, aftermarket distributors, and fleet operators across six continents who require custom or high-volume PTO driveline supply arrangements.<\/p>\n

\"Zapfwelle<\/p>\n

Kundenrezensionen<\/h2>\n

Gary Mathieson, Cattle Station Manager, Australia
\n<\/strong> “Been running an Alloway S22CD on our cattle property in Queensland for about six seasons now and have gone through a few PTO shafts over the years. Ordered this Weasler 55N replacement from CMN Transmission after our old one finally gave out at the overrunning clutch. Fitted straight on, no drama at all – the 20-spline bore slid right onto the shredder input shaft and the thru-bolt went in clean. We’re about 200 hours in on it now cutting kikuyu and buffel grass along creek banks in some pretty tough conditions. It’s holding up a lot better than the last one I bought locally. The guard is solid too. Would definitely buy again and will be recommending these guys to other farmers in our area.”<\/p>\n

Derek Flanagan, Fleet Manager, Ireland
\n<\/strong> “I manage roadside mowing contracts for a state highway authority and we run three Alloway S25CD pull-type shredders. When one of the CV PTO shafts developed a vibration issue last spring, I reached out to CMN Transmission and was genuinely impressed by how quickly their team identified the correct replacement spec – 55N series, 1.750 major diameter, 20 spline, thru-bolt style. The shaft arrived within a week, which is incredible given we ordered from overseas. Installed it in about 45 minutes, no shimming required, and the vibration disappeared completely. Price was about 40% less than what the OEM dealer quoted us. This is now our go-to supplier for all PTO shaft parts.”<\/p>\n

Henri Blanchard, Vineyard Contractor, France
\n<\/strong> “We operate a vineyard maintenance business in the Languedoc region and use Alloway S15CD shredders between our vine rows for mulching pruning cuttings. Finding the right replacement PTO shaft for flail shredder applications at a reasonable price has always been difficult here in France. CMN Transmission sent the 540 RPM version with the 55N overrunning clutch and it fitted perfectly. Honestly the build quality is as good as the original Weasler unit it replaced, maybe even a bit more robust on the guard tubing. We’ve put about 150 hours on it through one full pruning and vegetation management cycle without any issues whatsoever. The communication with their sales team was also excellent, even in English.”<\/p>\n

Bruce Harrington, Sheep Farmer, New Zealand
\n<\/strong> “Honestly I was a bit hesitant to order PTO shaft parts from a supplier I hadn’t used before but our local dealer wanted three weeks lead time and double the price. CMN Transmission had the 1000 PTO shaft version in stock for our S27CD shredder and it was on my farm in New Zealand within 10 days of ordering. Fit was spot on – slid straight onto the shredder input, thru-bolt went in with a standard socket set, no adapter or shimming needed. We’ve been using it hard on pasture renovation work, heavy dock and thistle shredding mostly. About 120 hours in and not a single issue. The U-joints feel tight and smooth and the guard is undamaged even after a few grazes on fence posts. Very happy.”<\/p>\n

Rodrigo Alves Ferreira, Agricultural Contractor, Brazil<\/strong>
\n“We have three Alloway shredders in our custom application fleet here in S\u00e3o Paulo state and source replacement PTO shafts from CMN Transmission for all of them now. Good quality, the price is fair, and critically, they actually respond quickly to technical questions. I asked about the difference between the 55N overrunning device and a slip clutch PTO shaft for our specific application (shredding sugarcane trash) and got a clear, knowledgeable answer the same day. The shafts have been running in some really heavy trash conditions and holding up well. The telescoping tube profile was well machined and slides smoothly even after getting packed with cane residue. This supplier clearly knows agricultural PTO shaft applications.”<\/p>\n

Andreas Mair, Apple Orchardist, Italy
\n<\/strong>“Run an Alloway S20CD on a 85hp John Deere for orchard floor management on our apple property in South Tyrol. The original PTO driveline shaft wore out its overrunning clutch after four seasons, which is pretty normal for intensive orchard work with lots of engagement and disengagement cycles. The CMN Transmission 55N replacement came with very clear installation instructions and all the hardware needed. The quality of the splined bore – 20 splines, 1.750 diameter – was precise and fit without any slop. I specifically asked for the 1000 rpm PTO shaft version to match our tractor configuration and that’s exactly what arrived. Very satisfied with quality and service. Logistics to Italy was faster than I expected.”<\/p>\n

Michael Ostrowski, Grounds Maintenance Owner, Canada<\/strong>
\n“I run a grounds maintenance company in Ontario and we have four Alloway shredders in our fleet – a mix of S22CD and S25CD models. CMN Transmission has been our PTO shaft supplier for the past two years and they’ve been consistently reliable. The parts quality is excellent – the PTO shaft guard material is proper thick HDPE, not the thin flimsy stuff you sometimes get from other suppliers. Delivery to Canada has been 7-9 days which works for us as long as we plan a little ahead. Their pricing is significantly better than sourcing through Canadian agricultural dealers and the fit is always correct first time. Their customer service team is also helpful when I’ve needed to clarify shaft length specs.”<\/p>\n

Travis Hollenbeck, Parts Manager, Farm Machinery Dealer, United States<\/strong>
\n“Our farm machinery dealership in Kansas stocks Alloway shredders and we frequently need replacement PTO drive shafts for customers. We’ve been importing from CMN Transmission for the past 18 months and the quality has been consistently solid. Every shaft that’s come through has been dimensionally correct and customers haven’t come back with fit issues. The 55N overrunning devices are particularly good quality – internal components look well finished and the clutch action feels positive and reliable. For a dealership looking for a reliable aftermarket PTO shaft parts supplier at competitive prices with decent logistics times, CMN Transmission is hard to beat.”<\/p>\n

Stefan Brandlmeier, Farmer, Germany<\/strong>
\n“We use Alloway S27CD shredders on our agricultural operation in Bavaria and ordered the CMN Transmission PTO shaft as a replacement for the worn Weasler unit. The fit was excellent – no rework was necessary. The delivery time was surprisingly fast, under 10 days to Bavaria. In terms of quality, the shaft fully meets expectations. Particularly the 55N overrunning clutch makes a high-quality impression; the ratchet mechanism is cleanly manufactured. For our next season, we will stock an additional spare shaft. Clear recommendation to other farmers looking for a reliable supplier for PTO shaft parts.”<\/p>","protected":false},"excerpt":{"rendered":"

Looking for a reliable replacement PTO shaft for your Alloway shredder? CMN Transmission offers heavy duty PTO driveline shafts engineered specifically for Alloway Shredder models S15CD, S20CD, S22CD, S25CD, and S27CD. Replacement of Weasler 55N series PTO shaft, overrunning clutch with 20-spline, 1.750″ major diameter connection, our agricultural PTO shaft delivers superior torque transmission at 540 RPM and 1000 RPM. The thru-bolt style 55N overrunning device protects your tractor and implement from shock loads and overrunning conditions common in demanding field applications.<\/p>","protected":false},"featured_media":6815,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[256,222],"product_tag":[232,228,242,234,257,233,258,226,229,235,243,225,230,231,224],"class_list":{"0":"post-6862","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-pto-shaft-for-flail-shredder","7":"product_cat-pto-shafts","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-flail-shredder-pto-shaft","13":"product_tag-heavy-duty-pto-shaft","14":"product_tag-pto-drive-shaft-for-flail-shredder","15":"product_tag-pto-drive-shafts","16":"product_tag-pto-driveline-shaft","17":"product_tag-pto-shaft-for-tractor","18":"product_tag-pto-shaft-manufacturers","19":"product_tag-pto-shafts","20":"product_tag-pto-shafts-for-sale","21":"product_tag-tractor-pto-drive-shaft","22":"product_tag-tractor-pto-shaft","24":"first","25":"instock","26":"shipping-taxable","27":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/product\/6862","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/comments?post=6862"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/media\/6815"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/media?parent=6862"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/product_brand?post=6862"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/product_cat?post=6862"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/product_tag?post=6862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}