PTO Shaft for Woods Multi Spindle Rotary Cutters DS96, MDS96, DS120, MDS120, DS1260, DS1440, DSO1260, MTS1680, TS1680

Rotary Cutter PTO Shaft and Rotary Cutter Gearbox

A rotary cutter system consists of two inseparable mechanical subsystems: the PTO drive shaft and the rotary cutter gearbox. The PTO shaft is the power delivery component that transfers torque from the tractor's power take-off to the cutter, while the rotary cutter gearbox is the power conversion component that receives that rotational input and redirects it 90 degrees downward to spin the horizontal cutting blades. Neither component can function without the other. The tractor PTO shaft delivers power at a horizontal axis aligned with the tractor's centerline, but the cutting blades need to spin in a horizontal plane beneath the cutter deck. The gearbox, typically equipped with spiral bevel gears or hypoid gears, makes this 90-degree direction change while also potentially changing the gear ratio to achieve the desired blade tip speed.

In a multi spindle rotary cutter like the Woods DS1260 or TS1680, a center gearbox receives the input from the PTO driveline shaft and distributes power to two or three spindle gearboxes through an internal gear train or cross shaft arrangement. Each spindle gearbox drives its own set of cutting blades. This architecture means the center gearbox input shaft is subjected to the combined load of all spindles, making the connection between the PTO shaft and gearbox a high-stress point. This is precisely why overload protection devices such as friction clutches or PTO shaft shear bolt mechanisms are so important at this junction: they act as a mechanical fuse that protects the expensive gearbox internals from damage caused by blade impacts.

When selecting PTO shaft parts or a replacement of Woods PTO shaft, it is essential to match the shaft specifications to the gearbox input requirements. The gearbox input shaft spline, operating speed, rotation direction, and torque rating must all align with the PTO drive shaft output specifications. CMN Transmission manufactures both tractor PTO shafts and rotary cutter gearboxes, which means we can provide perfectly matched driveline-to-gearbox solutions, eliminating compatibility guesswork and ensuring your rotary cutter system operates at peak efficiency with maximum component longevity.

Why Choose CMN Transmission's Agricultural PTO Shafts?

CMN Transmission is one of the world's leading suppliers of industrial power transmission solutions, headquartered in Ansan-si, Gyeonggi-do, Korea, with a production base and more than 10 shareholding cooperative factories. We maintain an inventory of over 150,000 standard stock products and employ a team of more than 200 professionals dedicated to manufacturing, quality assurance, and global logistics. Our products are exported to over 53 countries across Europe, North America, South America, the Middle East, Africa, Southeast Asia, and Oceania, serving diverse industries including agricultural machinery, construction equipment, logistics and transportation, mining, and heavy industrial manufacturing.

When you choose CMN Transmission for your tractor PTO shafts and PTO shaft parts, you gain access to factory-direct pricing without the margin layers added by multi-tier dealer networks. Our one-stop supply chain model means every component from the PTO shaft yoke to the PTO shaft u joint to the PTO shaft tube is manufactured or sourced under our quality control system, ensuring consistent material grades, dimensional tolerances, and assembly quality from shaft to shaft. We invest continuously in CAD-driven design, advanced material technology, and surface treatment processes including induction hardening, phosphating, and precision grinding to deliver products that compete head-to-head with premium European brands like Walterscheid and Bondioli & Pavesi.

CMN Transmission is ISO and CE certified, which means every PTO drive shaft leaving our facility has been tested to international standards for dimensional accuracy, torque capacity, and safety guard compliance. We provide comprehensive after-sales service including technical support, warranty coverage, and fast access to replacement PTO shaft parts for U-joints, tubes, yokes, clutch components, and safety guards. Our deep understanding of agricultural machinery applications, combined with our ability to offer custom PTO shaft solutions for non-standard configurations, makes us a trusted partner for equipment dealers, farm cooperatives, and large-scale agricultural operations worldwide.

Whether you need a single replacement of Woods PTO shaft for a DS96 or a bulk order of heavy duty PTO shaft assemblies for a fleet of TS1680 units, CMN Transmission delivers the product quality, competitive pricing, and responsive service that keeps your equipment running and your operation productive. Our business philosophy of "Transmit Force, Drive Future" drives everything we do, from product engineering to logistics support. Contact us today for a free quote and experience the difference of working directly with a world-class manufacturer.

FAQ

Q: What PTO shaft size do I need for my Woods multi spindle rotary cutter?
A: The required PTO shaft sizes depend on your specific model. DS96, MDS96, DS120, and MDS120 use a CAT4 x 2400 series shaft. DS1260 and DS1440 require a CAT6 CV x 2580 series. DSO1260 and MTS1680 use CAT5 x 2500, and the TS1680 uses a CAT6 CV x 55N. Check the specifications table above to match your model precisely.

Q: Can I use a 540 PTO shaft or a 1000 PTO shaft with these Woods cutters?
A: Most Woods multi spindle rotary cutter models in this range are designed for 540 PTO shaft rpm operation. However, some tractors offer a 1000 rpm PTO shaft option or a dual-speed PTO. Always verify your cutter's gearbox input speed specification before engaging the PTO, as running a 540 rpm gearbox at 1,000 rpm can cause severe damage to the gearbox and cutting deck.

Q: What is the difference between a standard PTO shaft universal joint and a CV driveline?
A: A standard PTO shaft universal joint creates cyclic speed variation that increases with operating angle, causing vibration. A constant velocity (CV) driveline eliminates this variation, delivering uniform rotational speed regardless of angle. CV configurations are recommended for semi-mount and pull-type cutters like the DS1260, DS1440, and TS1680 that operate at larger driveline angles during turns.

Q: Should I choose a slip clutch PTO shaft or a shear bolt PTO shaft for overload protection?
A: A slip clutch PTO shaft (K90/K90-4T friction clutch) provides reusable overload protection, automatically re-engaging after the overload passes. A shear bolt PTO shaft requires manual replacement of the broken bolt after each overload event. For multi spindle cutters used in heavy conditions with frequent hidden obstacles, the friction clutch is the preferred option due to less downtime.

Q: How often should I grease the PTO shaft u joint bearings on my rotary cutter driveline?
A: Grease all PTO shaft u joint cross bearings and the telescoping tube slip joint every 8 to 10 operating hours using NLGI #2 lithium-complex grease. Apply grease until it purges from each seal. In extremely dusty or wet conditions, shorten the interval to every 4 to 6 hours. Insufficient lubrication is the primary cause of premature U-joint and bearing failure.

Q: Is this PTO shaft a direct replacement of Woods PTO shaft original equipment?
A: Yes, CMN Transmission PTO shafts are manufactured to match the exact specifications of the original equipment replacement of Woods PTO shaft assemblies. Spline profiles, tube diameters, joint types, and overall length ranges are engineered to be a direct bolt-on replacement, so no PTO shaft adapter or modification is needed.

Q: Can CMN Transmission build a custom PTO shaft for a non-standard tractor-to-cutter distance?
A: Absolutely. CMN Transmission offers custom PTO shaft manufacturing for non-standard working lengths, special spline sizes, and unique yoke configurations. Provide your tractor PTO stub spline specification, cutter input shaft spline, and the minimum/maximum distance between them, and our engineering team will design a shaft that fits your specific setup.

Q: What connecting yoke bore size do I need for my tractor PTO shaft?
A: The PTO shaft yoke bore must match your tractor's PTO stub spline. The two standard options for this product range are 1.375-6 (1-3/8 inch, 6 spline) and 1.750-20 (1-3/4 inch, 20 spline). Check your tractor operator's manual or measure the existing PTO stub to confirm the correct spline count and diameter before ordering.

Q: Does the PTO shaft come with a safety guard and PTO shaft cover?
A: Yes, every CMN Transmission PTO shaft cover and safety guard assembly is included as standard. The guard consists of a free-spinning plastic tube with molded end cones and steel restraining chains that anchor to the tractor and cutter housings, meeting CE and ISO safety requirements for operator protection during field operation.

Q: What torque rating does the K90/4T friction clutch provide for heavy duty PTO shaft applications?
A: The K90/4T 4-disc friction clutch delivers up to 1,500 Nm of calibrated slip torque, suitable for heavy duty PTO shaft applications on multi spindle cutters operating up to 90 HP. The 2-disc K90 variant provides 1,000 Nm, suitable for lighter-duty models. Both clutch types are reusable and do not require replacement parts after a slip event, unlike a shear pin PTO shaft which needs a new pin each time.

Customer Reviews

Jake Thornton, Ranch Operator, United States
"We run a Woods DS1260 on a 70 HP John Deere pulling semi-mount across about 200 acres of mixed grass and light cedar regrowth in central Texas. The old driveline finally gave up after five seasons of pretty hard use, so I looked around for a replacement and found CMN Transmission. Ordered the CAT6 CV x 2580 shaft with the K90/4T friction clutch, 1.750-20 spline on both ends. The fit onto our tractor PTO stub and the cutter center gearbox was dead accurate with zero play. We are about 120 hours in since installing it last spring, and the constant velocity joint makes a noticeable difference in how smooth the shaft runs compared to the old standard U-joint shaft, especially during turns on hillsides. Clutch has tripped twice on stumps, saved the gearbox both times. Very satisfied with this PTO shaft purchase."

Craig Hendricks, Mowing Contractor, Australia
"I manage a contracting operation here in Queensland and we run three Woods rotary cutters on different sized tractors for council roadside mowing contracts. Needed a CAT4 x 2400 replacement for our DS96 unit. Placed the order through CMN Transmission's website and was surprised how quickly it arrived to Australia considering it shipped from Korea. Packaging was solid, shaft arrived in perfect condition. The 1.375-6 spline yoke slid right onto our Kubota PTO output, guard fitted well, and the overall build quality is genuinely impressive for the price point. The U-joints feel tight and well-greased out of the box. Have done roughly 90 hours on it so far cutting kikuyu and guinea grass along road shoulders without any issues. Will be ordering more as our other shafts need replacement."

Robert Klassen, Cooperative Manager, Canada
"Our agricultural cooperative runs several Woods MDS120 mounted cutters on New Holland tractors for field maintenance across approximately 400 hectares of wheat and canola stubble in Alberta. The factory PTO shaft was a Walterscheid unit that served well but the U-joints wore out after three seasons in our cold, dusty conditions. I contacted CMN Transmission for a quote on the CAT4 x 2400, 1.750-20 spline configuration, and their response time was excellent. They answered several technical questions about the clutch torque rating and shaft collapsed/extended dimensions before I ordered. The shaft itself has performed flawlessly for about 150 hours. I appreciate that the safety guard chain anchors are metal, not plastic, which is a durability detail that matters up here in prairie conditions. Professional product, professional service."

Danny McPherson, Dairy Farmer, New Zealand
"I bought the CAT5 x 2500 PTO shaft for our MTS1680 three-spindle mounted cutter that we use on a 90 HP Massey Ferguson. This is a serious piece of equipment and it needed a serious driveline. CMN Transmission delivered exactly that. What I noticed immediately is the tube wall thickness, it feels substantially heavier than the shaft it replaced. We are clearing mixed pasture in the Waikato region, lots of rushes and gorse, and the shaft handles the load without complaint. The grease fittings on the U-joints are positioned sensibly so you can actually reach them with a grease gun without dismounting the shaft, which sounds like a small thing but makes a big difference in practice. Around 85 hours logged. No vibration, no noise, no regrets at all."

Thomas Radcliffe, Estate Manager, United Kingdom
"We operate a large estate in Hampshire with about 300 acres of grassland that needs cutting several times a year. Our Woods DS1440 is pulled behind a Case IH Maxxum. The previous PTO shaft was an Italian-made unit that worked fine but was very expensive to replace when the CV joint eventually wore out. A colleague recommended CMN Transmission, so we ordered the CAT6 CV x 2580, and honestly the quality is at least on par with the original at a significantly better price. The constant velocity driveline makes a real difference on our terrain, which has quite a few slopes and undulations. Delivery to the UK took about two weeks, well packaged in a cardboard tube with foam end caps. Installation was straightforward. Roughly 110 operating hours with no issues whatsoever."

Stefan Brinkmann, Arable Farmer, Germany
"Ich habe die CAT4 x 2400 Gelenkwelle fur unseren Woods DS120 bestellt, der an einem Deutz-Fahr Traktor angebaut ist. I will write in English for the review. We use the DS120 for maintaining grass strips between crop rows and along drainage ditches in Lower Saxony. The shaft arrived quickly from CMN Transmission, and I was impressed by how well the documentation was organized with the technical specifications clearly printed. The 1.375-6 spline yoke fitted our Deutz PTO perfectly. We have logged approximately 70 hours so far cutting mixed grass and thistle along canal banks, and the shaft is performing exactly as expected. The telescoping action is smooth and the guard tube rotates freely. The price was very competitive compared to ordering a genuine Walterscheid replacement through our local dealer. I would recommend CMN Transmission to other German farmers."

Antoine Deschamps, Vineyard Owner, France
"Notre exploitation viticole dans le sud de la France utilise un Woods DS96 pour l'entretien des interrangs. I will continue in English. We needed a replacement PTO shaft and chose CMN Transmission after comparing prices with several European distributors. Ordered the CAT4 x 2400 with the K90 friction clutch (2-disc, 1,000 Nm) because vineyard mowing sometimes catches wire stakes or old vine stumps. The clutch has already saved us once when a blade hit a buried irrigation fitting. The shaft quality is solid. Our tractor is a Fendt 200 Vario with the 540 rpm PTO, and the spline engagement is precise. About 60 hours of use across two seasons. Shipping to France was handled well, arrived in about 10 days with tracking. Very good value for money."

Ricardo Oliveira, Sugar Cane Farm Supervisor, Brazil
"We maintain approximately 500 hectares of sugar cane field borders and access roads in Sao Paulo state with Woods rotary cutters. Purchased the CAT5 x 2500 PTO drive shaft for our DSO1260 offset unit. The offset configuration is critical for us because we need to cut the cane field edges without driving over the planted rows, which means the driveline runs at significant operating angles. The CMN Transmission shaft handles this with no vibration at all. The build quality of the yokes and the universal joints is excellent, and the overall weight of the shaft feels appropriate for a heavy-duty application. We have been running this shaft for two full cane seasons now, probably around 250 hours, and the U-joints are still tight with regular greasing every 8 hours. Good product, good price, reliable shipping to Brazil."