PTO Shaft for Woods Snow Blower SS84-2, SS96-2, SS108-2
The CMN Transmission PTO drive shaft for Woods Snow Blower SS84-2, SS96-2, and SS108-2 is engineered for heavy-duty tractor-mounted snow clearing operations. This snow blower PTO shaft delivers reliable power transmission from 60 HP to 200 HP across dual-speed 540 and 1000 RPM configurations. Whether you operate an estate, a commercial parking facility, or a large farm in harsh winter conditions, this PTO driveline shaft for snow blower ensures consistent, season-long performance with minimal maintenance.
Reliable PTO Shaft for Woods Snow Blower Models
PTO Shaft for Woods Snow Blower Model: SS84-2, SS96-2, SS108-2
The CMN Transmission PTO drive shaft for Woods Snow Blower SS84-2, SS96-2, and SS108-2 is engineered for heavy-duty tractor-mounted snow clearing operations. Built on the 2400 Driveline Series with Cat 4 rating and shear bolt protection, this snow blower PTO shaft delivers reliable power transmission from 60 HP to 200 HP across dual-speed 540 and 1000 RPM configurations.
Designed as a precision replacement for Weasler PTO shaft assemblies, this tractor PTO shaft fits 1.375-6 spline connections and is available in both tubular and splined configurations. Whether you operate an estate, a commercial parking facility, or a large farm in harsh winter conditions, this PTO driveline shaft for snow blower ensures consistent, season-long performance with minimal maintenance. ISO and CE certified, factory-direct from our production base in Korea, shipped to 53+ countries worldwide.

Woods Snow Blower Models
| MODEL | SB54S | SB64S | SB74C | SB84C | SS84-2 | SS96-2 | SS108-2 |
|---|---|---|---|---|---|---|---|
| PTO horsepower | < 25 | 15-35 | 30-50 | 35-60 | 60-80 | 80-125 | 125-200 |
| PTO RPM | 540 | 540 | 540 | 540 | 540 | 540/1000 | 540/1000 |
| Driveline Series | 2300 | 2300 | 2300 | 2300 | 2400 | 2400 | 2400 |
| Driveline Protection | shear bolt | shear bolt | shear bolt | shear bolt | shear bolt | shear bolt | shear bolt |
Almost all snow blowers, regardless of the manufacturer, use a basic PTO with a shear bolt.
Woods Snow Blower Specifications
| Specifications | SB54S | SB64S | SB74C | SB84C | SS84-2 | SS96-2 | SS108-2 |
|---|---|---|---|---|---|---|---|
| PTO Horsepower | 15–25 | 15–35 | 30–50 | 35–60 | 60–80 | 80–150 | 125–175 |
| Tractor PTO Speed | 540 RPM | 540/1000 RPM | |||||
| Hitch (All models are ASAE Quick Hitch Compatible) | Cat 1 | Cat 1 & 2 | Cat 2 & 3 | ||||
| Working Width | 54" | 64" | 74" | 84" | 84" | 96" | 108" |
| Transport Width | 56" | 66" | 76" | 86" | 87.7" | 99.7" | 111.7" |
| Working Height | 24" | 24" | 26" | 26" | 28" | 38" | 38" |
| Approximate Weight | 415 lbs | 436 lbs | 592 lbs | 632 lbs | 1,210 lbs | 1,420 lbs | 1,741 lbs |
| Driveline | Cat 3 | Cat 4 | |||||
| Driveline Protection | shear bolt | ||||||
| Drive Type–Fan | gearbox | ||||||
| Drive Type–Auger | gearbox & chain | ||||||
| Number of Feeder Augers | 1 | 2 | |||||
| Auger Flighting | .313" x 2" | .313" x 3" | |||||
| Chute Rotation | 270° | 200°, hydraulic | |||||
| Hydraulic Chute Rotator | optional | standard | |||||
| Fan Diameter | 22" | 22" | 24" | 24" | 34" | 34" | 34" |
| Fan Depth | 6" | 6" | 8" | 8" | 9" | 9" | 9" |
| Replaceable Skids | yes | ||||||
| Adjustable Skids | yes | ||||||
| Replaceable Cutting Edge | no | yes | |||||
| Telescoping 3-Point Hitch | no | yes | |||||
| Duty Level | Standard Duty | Heavy Duty | |||||
Snow Blower PTO Shaft Specifications
| Tubular PTOs - Tractors with 1.375"-6 PTO | ||
| Category | Assembly Part# | Shear Bolt Part# |
| 3 (40 HP@540 RPM) | SIZE 4 WITH FF1 * 1.375-6 X 1.375-6 | 2300 SIZE 4 SB*LB*KB 1.375-6* 1700nm |
| 4 (60 HP@540 RPM) | SFT H7 * SIZE 6 * 4LOBE ASSY INNER=51.2 | SIZE 6 SB 1.375-6 . 2700nm |
| 5 (90 HP@540 RPM) | SIZE 8 ASSY 1.375-6 X OPEN * loc==24** 20i | SIZE 8 BP8 1.375-6 TP LB*SB 3500nm |
| 5 (90 HP@540 RPM) | 2500 assy 58 OAL*48C-C*S4/S5*540xopen no rear uj 2500 Assy with 4-disc clutch * | 2500 KB,LB *SB* 1.375-6 * 2920nm* PIN QD |
| Splined PTOs - Tractors with 1.375"-6 PTO | ||
| Category | Assembly Part# | Shear Bolt Part# |
| 4 (60 HP@540 RPM) | SIZE 6 SPLINED ASSY, NO ENDS*bom | SIZE 6 SB 1.375-6. 2700NM |
| 5 (90 HP@540 RPM) | SIZE 8 SPLINED ASSY | SIZE 8 BP8 1.375-6 TP LB*SB 3500nm |
| 5 (90 HP@540 RPM) | 2500 SPLINED W/SHIELD NO ENDS | 2500 KB,LB *SB* 1.375-6 * 2920nm* PIN QD |
Features of PTO Shaft for Woods Snow Blower
1. 2400 Series Driveline with Cat 4 Rating
This heavy duty PTO shaft is built on the 2400 Driveline Series, rated at Cat 4 to handle the extreme torque loads produced by 60 to 200 HP tractors. The robust internal construction and precision-machined PTO shaft tube ensure consistent power delivery under continuous heavy-load conditions, significantly reducing drivetrain fatigue and unplanned downtime during winter operations.
2. Shear Bolt Overload Protection
Every shear bolt PTO shaft in our lineup incorporates a calibrated PTO shaft shear bolt protection system. When the implement strikes a hidden rock, frozen debris, or an unexpected obstruction, the shear bolt sacrifices itself instantly, safeguarding the gearbox, auger, and tractor PTO from catastrophic damage. Replacement shear bolts are inexpensive and easy to carry in the field, making recovery fast and cost-effective.
3. Dual-Speed 540 / 1000 RPM Compatibility
The SS96-2 and SS108-2 models require a 1000 RPM PTO shaft or a 540 PTO shaft depending on tractor configuration. Our PTO driveline shaft accommodates both standards with appropriate yoke and stub selection, giving operators the flexibility to connect to the widest range of modern utility and row-crop tractors without requiring additional adapters or custom fabrication.
4. Precision CNC-Machined PTO Shaft Yoke & U-Joint
The PTO shaft yoke and PTO shaft u joint components are precision-machined using modern CNC equipment to maintain tight tolerances and concentricity. This eliminates the vibration, wobble, and premature bearing wear commonly associated with low-quality aftermarket replacements, delivering smooth operation throughout the full angular range of the driveline even when the tractor navigates uneven terrain.
5. Full PTO Shaft Guard & Cover for Operator Safety
A durable PTO shaft guard and PTO shaft cover are included as standard. Constructed from high-impact-resistant polymer, the guard shields rotating components throughout the full operating length and complies with CE and ISO safety standards. Unlike thin aftermarket covers that crack in cold weather, our guard maintains structural integrity at sub-zero temperatures, protecting both the operator and bystanders season after season.
6. Direct Drop-In Replacement for Weasler PTO Shaft
Engineered as a replacement of Weasler PTO shaft assemblies, our PTO shaft dimensions and spline configurations match OEM specifications precisely. The 1.375-6 spline interface slides directly onto compatible tractor PTOs without shimming or modification. Users upgrading from worn or damaged Weasler units report zero fitment issues, with installation typically completed in under 30 minutes by a single operator using basic hand tools.

Working Principle of Snow Blower PTO Shaft
A tractor PTO shaft transmits engine power from the tractor's power take-off stub to the gearbox of an attached implement, in this case the Woods Snow Blower auger and fan drive system. When the operator engages the PTO lever, the tractor's internal clutch pack couples the engine crankshaft rotation to the external PTO stub, which rotates at either 540 or 1000 RPM depending on the selected gear range. The PTO drive shaft - consisting of two telescoping PTO shaft tube sections, two universal joint assemblies, and two end yokes - spans the distance between the tractor stub and the implement input shaft.
The PTO shaft universal joint (u-joint or Cardan joint) at each end of the PTO driveline shaft is the critical component that allows the shaft to transmit rotational torque even when the tractor and implement are not perfectly aligned. As the tractor drives over uneven ground, turns slightly, or the three-point hitch fluctuates in height, the u-joints flex to maintain continuous torque delivery. In this 2400 Series driveline, the u-joints are heat-treated for hardness and precision-ground for low-friction operation. They tolerate angular deflections typical of the Cat 4 hitch geometry at full operational torque, ensuring no power interruption regardless of terrain variation.
The inner and outer PTO shaft tubing sections slide within each other to compensate for changes in distance between the tractor PTO and the implement input as the hitch raises and lowers or the tractor reverses into a tight attachment. This telescoping action is especially important when operating the heavy SS84-2, SS96-2, and SS108-2 units over rolling ground or when hitching on sloped surfaces. The mating profiles - typically square or star-shaped cross-sections - ensure torque is transmitted without play or rotational slippage, while the external PTO shaft guard remains in position to protect the operator at all times.
When the auger of the Woods Snow Blower encounters a sudden blockage - an embedded rock, a frozen clump of ice, or solid debris - the drivetrain torque spikes instantly. The shear bolt, engineered with a precisely calibrated failure point, shears cleanly before the spike can travel through the agricultural PTO shaft to the gearbox or tractor PTO stub. This prevents gear tooth fractures, yoke breakage, and costly internal gearbox damage. The 2400 Series shear bolt is rated at 2700 Nm for Size 6, 3500 Nm for Size 8, and 2920 Nm for the 2500 Series, matching the torque limits of the associated assemblies exactly.
The SS84-2 operates exclusively on a 540 PTO shaft, while the SS96-2 and SS108-2 support both 540 and 1000 RPM PTO shaft operation. At 1000 RPM, the fan impeller and auger system rotates faster, producing higher volumetric snow throughput and a greater throwing distance, which is essential for clearing wide driveways and parking lots quickly after major snowfall events. Selecting the correct PTO shaft sizes and speed configuration for your tractor model is critical: mismatched RPM can result in underspeeding the auger or, conversely, overstressing the driveline.
To summarize the complete power flow: the tractor engine drives the PTO stub at the selected RPM; the tractor PTO drive shaft transmits this rotational energy through the telescoping tube and u-joints to the snow blower input shaft; the input shaft drives the gearbox, which splits power to both the auger drive (via chain) and the fan drive; the dual feeder augers gather snow from across the 84 to 108-inch working width and channel it toward the central fan; the fan impeller accelerates the snow through the discharge chute, ejecting it 200 degrees hydraulically to the desired direction. Every stage of this process depends on the PTO shaft tractor connection being mechanically sound, properly lubricated, and correctly sized, making the quality of your PTO driveline shaft for snow blower a direct determinant of the overall system's reliability and longevity.

Application Scenarios
1. Driveway Snow Removal
The primary use case. The Woods Snow Blower efficiently clears accumulated snow from long driveways and residential access paths by throwing it to the side, providing quick and reliable restoration of vehicle and pedestrian access during winter conditions while handling heavy accumulations with its two-stage auger and impeller design. This PTO shaft for snow blower ensures consistent torque delivery throughout the full clearing pass.
2. Rural Property and Farm Access Maintenance
Managing snow on expansive rural properties, farm lanes, barnyards, and agricultural structures to support livestock care, equipment movement, and daily farm operations throughout the winter season, keeping critical pathways open for essential activities. The agricultural PTO shaft paired with the 2400 driveline handles the irregular load cycles typical of farm-lane clearing across variable snow depths and surface conditions.
3. Commercial Parking Lot Maintenance
Clearing snow from large parking lots and commercial properties to maintain operational access, customer safety, and business continuity during heavy snowfall events, ensuring vehicles and pedestrians can navigate safely without interruption. The wide 96 to 108-inch working widths of the SS96-2 and SS108-2 maximize coverage per pass, and the heavy duty PTO shaft sustains performance through extended commercial clearing shifts.
4. Estate and Large Property Clearing
Handling heavy-duty snow removal on large estates and properties where significant snow accumulation requires powerful, efficient clearing capabilities across expansive areas, leveraging reinforced housing and dynamic balance for smooth, durable performance. The custom PTO shaft options available from CMN Transmission allow estate operators to specify exact shaft lengths and PTO shaft dimensions for their specific tractor-to-implement clearance requirements.
5. Sidewalk and Pathway Maintenance
Clearing walkways, sidewalks, and pedestrian paths in residential, institutional, or recreational settings to promote safe foot traffic and prevent winter hazards, delivering precise control and high throwing distance for effective snow displacement. The shear bolt protection of the PTO shaft for Woods snow blower makes it safe to operate on paved surfaces where subsurface utilities or embedded edges could cause sudden blockages.
6. Heavy-Duty Storm Recovery
Rapidly processing deep snow drifts and heavy accumulations after major winter storms to restore normal access, safety, and functionality to residential, commercial, and rural sites, minimizing downtime and enabling users to return to other priorities faster. With a Cat 4 driveline rated for 125 to 200 HP on the SS108-2 and a 34-inch fan impeller, this PTO driveline shaft for snow blower keeps pace with the most extreme storm-recovery demands.

How to Insatall PTO Shaft on Woods Snow Blower
1. Safety Preparation and Tractor Shutdown
Before beginning installation, park the tractor on level ground, engage the parking brake, shut off the engine, and remove the ignition key. Allow the tractor PTO stub and the snow blower gearbox input shaft to come to a complete stop. Wear safety gloves throughout the process, as burrs on old yoke splines or sharp edges on the PTO shaft guard housing can cause hand injuries. Confirm the tractor's three-point hitch is lowered fully to reduce implement weight tension.
2. Remove the Old PTO Shaft
Detach the worn PTO drive shaft by first releasing the quick-disconnect locking pin or retaining clip at the tractor PTO stub. Then release the implement-end yoke from the snow blower gearbox input shaft by similarly releasing the retaining mechanism. Remove the entire shaft assembly and inspect both the tractor PTO stub and the gearbox input shaft for wear, corrosion, or damage. Clean both stubs with a wire brush and apply a light coat of grease before proceeding.
3. Verify PTO Shaft Length Before Installation
With the hitch lowered to its normal working position, measure the distance between the tractor PTO stub and the implement input shaft. The new PTO shaft length should be selected so the telescoping tube sections overlap by at least one-third of their total compressed length, ensuring the shaft cannot over-extend or bottom out during operation. If the shaft is too long or short, contact CMN Transmission for a custom PTO shaft order with modified PTO shaft dimensions.
4. Install Tractor-End Yoke onto PTO Stub
Align the 1.375-6 spline of the PTO shaft yoke with the tractor PTO stub, ensuring the splines mesh cleanly without forcing. Push the yoke fully onto the stub until the retaining pin or quick-disconnect collar clicks into its locked position. Tug gently on the shaft to confirm positive retention. For stubborn fitment, apply a light coating of anti-seize compound to the splines but avoid grease, which can attract debris and accelerate wear on the PTO shaft adapter interface.
5. Connect Implement-End Yoke and Install Shear Bolt
Slide the implement-end PTO shaft yoke onto the snow blower gearbox input shaft. Align the shear bolt holes between the yoke hub and the input shaft collar, then insert the correct-grade PTO shaft shear bolt as specified for the driveline series (2700 Nm for Size 6, 3500 Nm for Size 8, or 2920 Nm for 2500 Series). Torque the shear bolt nut to the manufacturer's specification. Never substitute a standard hardware bolt for the shear bolt, as doing so removes the overload protection that prevents gearbox damage.
6. Attach PTO Shaft Guard and Perform Pre-Operation Check
Secure the PTO shaft cover and guard chains to the tractor frame and implement frame to prevent the guard from rotating with the shaft. Verify all retaining fasteners are tight and the guard rotates freely without binding. Start the tractor at low throttle, engage the PTO at minimum engine RPM, and confirm smooth, vibration-free operation for 30 seconds before increasing to full working speed. Inspect for any unusual noise or movement, shut down, and recheck all fasteners before commencing normal operations. Carry spare PTO shaft parts including shear bolts in the field at all times.

How to Select the Right PTO Shaft for Snow Blower
1. Confirm Your Tractor's PTO Speed
Before ordering, verify whether your tractor produces 540 RPM, 1000 RPM, or both at the PTO stub. The SS84-2 is designed exclusively for a 540 PTO shaft; the SS96-2 and SS108-2 support both. Running an under-rated or incorrectly matched 1000 RPM PTO shaft at 540 RPM will underperform the blower, while connecting a 540-only shaft to a 1000 RPM tractor stub can cause rapid fatigue and failure. Always cross-reference your tractor operator's manual for the correct PTO speed specification.
2. Match Horsepower to Driveline Category
The 2400 Series driveline with Cat 4 rating is required for the SS84-2, SS96-2, and SS108-2, which operate tractors from 60 to 200 HP. Choosing an undersized driveline (Cat 3 or 2300 Series) for these heavy-duty snow blowers will result in premature yoke and u-joint failure due to torque overload. Always select the driveline category that equals or exceeds your tractor's peak PTO output. If you are unsure, contact CMN Transmission with your tractor model number and we will confirm the appropriate PTO shaft tractor configuration.
3. Measure Required PTO Shaft Length
Measure the compressed length from tractor PTO stub to implement input shaft with the hitch in the lowest working position. Add sufficient overlap (at least one-third of tube length) to prevent binding. Measure again in the highest hitch position to confirm the shaft does not over-extend. Note that our PTO shaft dimensions and PTO shaft length can be customized if the standard telescoping range does not suit your tractor-implement geometry. Request a custom specification sheet from CMN Transmission's engineering team.
4. Choose Tubular or Splined Configuration
Both tubular and splined PTO shaft tube configurations are available for the 1.375-6 spline interface. Tubular profiles (square or star cross-section) offer slightly higher torsional stiffness and are more common on factory-fitted driveliners. Splined profiles offer lower insertion force and are preferred when the shaft must be connected and disconnected frequently or when operating in confined areas. Review your implement's input shaft design and select accordingly, or consult CMN Transmission for a side-by-side comparison of the PTO shaft tubing options available.
5. Verify Spline Profile: 1.375-6 Standard
All Woods Snow Blower SS models use a 1.375-6 (1-3/8 inch, 6-spline) PTO stub connection as the standard interface. This is the most common Cat 2 and Cat 3 tractor PTO spline profile in North America and Europe. Confirm your tractor's PTO stub is 1.375-6 before ordering. If your tractor features a different profile (such as 1.375-21 or 1.750-20 for higher-HP machines), a PTO shaft adapter will be required. CMN Transmission stocks a full range of adapters and can supply them as part of a complete assembly order.
6. OEM vs Aftermarket: Why Choose CMN
While OEM replacement parts from the original manufacturer carry premium pricing, CMN Transmission offers factory-direct tractor PTO shafts at 30 to 50% lower cost without compromising engineering quality. Our products are manufactured under ISO 9001 and CE certification, with the same raw material grades and heat treatment protocols as leading OEM brands. The result is a replacement of Weasler PTO shaft quality at a competitive price point, backed by a one-stop after-sales service team available globally.

Common Troubleshooting
1. Excessive Vibration During Operation
Cause: Worn or seized u-joints, bent PTO shaft tube, or misaligned yoke. Fix: Shut down immediately. Inspect each PTO shaft u joint for play, corrosion, or needle bearing failure by attempting to rock the joint by hand. Replace worn u-joints as a matched set. Check the shaft tube for straightness by rolling on a flat surface. If bent, replace the full assembly to avoid secondary balance problems and additional drivetrain damage.
2. Shear Bolt Breaks Repeatedly
Cause: Incorrect grade shear bolt installed, auger blockage, or engagement at full engine RPM. Fix: Always use the manufacturer-specified PTO shaft shear bolt grade and torque rating (2700 Nm, 3500 Nm, or 2920 Nm as applicable). Never engage the PTO at full throttle from rest. If the auger is blocked, disengage the PTO and clear the blockage manually before re-engaging. Do not substitute standard hardware bolts for shear bolts, as these will not shear at the correct load and will transfer damaging forces to the gearbox.
3. PTO Shaft Slips or Disengages from Stub
Cause: Worn splines on the tractor PTO stub or the shaft yoke, or a faulty quick-disconnect retaining collar. Fix: Inspect the 1.375-6 spline teeth on both the tractor stub and the PTO shaft yoke for rounding or chipping. Worn splines must be replaced as they cannot be repaired. Verify the retaining pin or quick-disconnect collar snaps into its groove positively. If the collar spring is weak or broken, replace the collar immediately. Operating with a partially engaged shaft poses a serious safety risk.
4. Telescoping Sections Seize or Will Not Slide
Cause: Lack of lubrication, corrosion buildup, or debris ingression into the PTO shaft tubing. Fix: Separate the telescoping sections by pulling them apart. Clean the inner bore and outer tube surfaces thoroughly with a wire brush and solvent. Inspect for corrosion pitting; light pitting can be smoothed with fine emery cloth. Apply a generous coat of lithium-based or EP grease to the inner tube before reassembly. Re-grease at the start of every winter season and again after extended wet or muddy operations.
5. Guard Rotates with Shaft
Cause: Guard safety chains not attached or broken, allowing the PTO shaft cover to spin with the rotating assembly. Fix: Shut down immediately and do not operate without a properly anchored guard. Reattach or replace the guard retention chains, connecting one end to the tractor frame and the other to the implement frame. The guard must be completely stationary during PTO operation. A spinning guard cannot protect the operator and constitutes a serious CE and ISO safety violation. Replace the full guard assembly if mounting brackets or chains are damaged.
6. Abnormal Noise at PTO Stub Connection
Cause: Worn or loose yoke spline causing clunking, or a u-joint with a dried-out needle bearing producing a squealing or grinding sound. Fix: Grease the u-joint crosses through their grease nipples using a quality EP grease if accessible. If noise persists after lubrication, the needle bearings have likely failed and the PTO shaft parts kit including replacement u-joint assemblies should be ordered. CMN Transmission provides full u-joint kits matched to our 2400 Series assembly for fast field repair.

Snow Blower PTO Shaft and Snow Blower Gearbox
The snow blower PTO shaft and the snow blower gearbox are the two most critical mechanical components in any tractor-mounted snow blower system, including the Woods SS84-2, SS96-2, and SS108-2 series. Each serves a distinct but inseparable role in the overall power transmission chain that converts engine RPM into the auger and fan rotational speed required to move large volumes of snow efficiently.
The PTO driveline shaft for snow blower is the primary power conduit. It transfers raw rotational energy from the tractor's PTO stub directly to the gearbox input shaft, spanning the physical gap between the two machines and accommodating angular misalignment through its u-joint assemblies. Without a properly rated, correctly sized tractor PTO drive shaft, no power reaches the implement at all. The 2400 Driveline Series used in the SS series is specifically sized to handle the 60 to 200 HP torque range that these heavy-duty blowers require, with shear bolt protection to prevent overload damage from debris ingestion.
The snow blower gearbox receives this input power and redistributes it to two separate output drives: the auger chain drive and the fan (impeller) drive. In the SS96-2 and SS108-2, the dual feeder augers require significantly higher torque than the smaller SB series, which is why the Cat 4 driveline rating is mandatory. The gearbox acts as both a speed reducer and a power splitter, setting the auger at an appropriate rpm for feeding snow inward and simultaneously driving the 34-inch fan impeller at the RPM needed to throw snow distances up to 30 feet through the hydraulic discharge chute.
The relationship between the PTO drive shaft for snow blower and the gearbox is also critical from a maintenance standpoint. A worn or vibrating PTO shaft transmits shock loads and torsional pulses directly into the gearbox input shaft bearing and gear teeth, accelerating internal wear. Conversely, a gearbox with worn output shafts places eccentric loads on the PTO shaft yoke, accelerating u-joint failure. For this reason, CMN Transmission recommends inspecting both components together at the start of each winter season, replacing either when wear exceeds acceptable limits, and always using matched assembly specifications.
CMN Transmission supplies both replacement snow blower PTO shafts and compatible snow blower gearboxes for the Woods SS series and many other tractor-mounted snow blower brands worldwide. Purchasing both components from a single supplier ensures dimensional compatibility, matched torque ratings, and simplified warranty support, reducing the risk of mismatched parts causing premature failure.

Why Choose CMN Transmission's Agricultural PTO Shafts?
CMN Transmission (Korea) stands as one of the world's leading suppliers of industrial and agricultural power transmission solutions, with a product range spanning PTO drive shafts, agricultural gearboxes, hydraulic cylinders, planetary gearboxes, worm gearboxes, bevel gears, chain sprockets, chains, gear racks, pulleys, taper bushes, couplings, and more. Headquartered in Ansan-si, Gyeonggi-do, Korea, with a production base and over 10 shareholding cooperative factories, we maintain an inventory of more than 150,000 standard stock products and serve customers in over 53 countries across North America, Europe, South America, the Middle East, Africa, Southeast Asia, and Oceania.
What sets CMN Transmission apart in the agricultural PTO shaft market is our commitment to factory-direct pricing without sacrificing quality. As an integrated manufacturing and trading company, we eliminate the multiple dealer markups that inflate the cost of OEM replacement parts. Every tractor PTO shaft we produce is manufactured using advanced CAD design, precision CNC machining, modern heat treatment processes, and rigorous quality testing. Our products carry both ISO and CE certifications, ensuring compliance with international safety and performance standards.
Beyond product quality, we offer a level of customer support that large OEM brands often cannot match. Our technical team provides pre-sale consultation to confirm spline configurations, shaft lengths, and clutch specifications for your exact tractor and implement combination. We offer customized PTO shaft parts for non-standard applications and provide detailed dimensional drawings upon request. After the sale, our one-stop after-sales service ensures that replacement components, technical guidance, and warranty support are always accessible. When you choose CMN Transmission, you are choosing a partner committed to keeping your equipment running efficiently, reliably, and safely, season after season.


FAQ
Q: What PTO shaft driveline series is required for the Woods SS84-2, SS96-2, and SS108-2?
A: All three models require the 2400 Driveline Series with a Cat 4 rating. This is distinct from the 2300 Series used on the smaller SB54S through SB84C standard-duty models. Using an undersized 2300 Series shaft on the SS heavy-duty models will result in premature failure due to the higher torque demand. Always confirm the driveline series against the blower's published specification before ordering replacement PTO shaft parts.
Q: What is the difference between a 540 PTO shaft and a 1000 RPM PTO shaft for snow blowers?
A: A 540 PTO shaft operates at 540 RPM at the stub, which is the standard for lower to mid-horsepower tractors (typically below 80 HP). A 1000 RPM PTO shaft operates at 1000 RPM, delivering higher rotational speed for higher-HP tractors (typically 80 HP and above). The SS84-2 uses 540 RPM only, while the SS96-2 and SS108-2 support both 540 and 1000 RPM. Always match the PTO shaft speed to your tractor's rated PTO output and the blower's input gearbox ratio specification.
Q: Is this PTO shaft a direct replacement for Weasler PTO shafts on the Woods SS series?
A: Yes. Our CMN Transmission replacement of Weasler PTO shaft assemblies are dimensionally engineered to match OEM specifications for the Woods SS84-2, SS96-2, and SS108-2. The 1.375-6 spline interface, overall assembly length, yoke bolt pattern, and tube profile are all matched to the original. Most customers report direct, no-modification fitment. If you have any doubt, provide CMN Transmission with your tractor PTO stub type and the specific blower model and we will confirm the correct part number before you order.
Q: What shear bolt torque rating should I use for my driveline assembly?
A: The correct PTO shaft shear bolt torque depends on the assembly size. For the 2400 Series: Size 6 uses 2700 Nm, Size 8 uses 3500 Nm, and the 2500 Series uses 2920 Nm. Never substitute a standard hardware bolt for a shear bolt, as these will transfer overload forces directly to the gearbox and tractor PTO rather than shearing cleanly. Always use the grade and part number specified for your exact assembly. CMN Transmission includes spare shear bolts with every shaft order and lists the correct specification on the shipping documentation.
Q: Can I use a PTO shaft with a slip clutch instead of a shear bolt for snow blower applications?
A: While a PTO shaft with slip clutch (also called a slip clutch PTO shaft) offers the advantage of continuous overload slip without requiring bolt replacement, most snow blower manufacturers including Woods specify a shear bolt for the SS series. A slip clutch allows repeated slip events without stopping work, which can be convenient. However, for snow blower applications where impacts are infrequent and stopping to replace a bolt is not a major burden, the shear bolt system is simpler, lighter, and lower cost. Our 2500 Assy with 4-disc clutch option is available for customers who prefer clutch-based protection.
Q: How do I measure the correct PTO shaft length for my tractor and snow blower combination?
A: To determine the correct PTO shaft length, lower the tractor's three-point hitch to the operating position and measure the distance from the face of the tractor PTO stub to the face of the implement gearbox input shaft. Subtract approximately 50mm for yoke engagement. The selected shaft should compress so that the inner and outer tubes overlap by at least one-third of the maximum tube length, and should never fully extend or bottom out during operation. If your measurement falls between standard sizes, CMN Transmission offers custom PTO shaft lengths with modified PTO shaft dimensions.
Q: What maintenance is required for a PTO drive shaft on a snow blower?
A: Proper maintenance of your PTO drive shaft for snow blower includes: greasing the u-joint crosses through their grease nipples with EP grease at the start of each season and again mid-season during heavy use; greasing the inner tube and outer tube sliding surfaces at the same intervals; inspecting the shear bolt before each use; and checking the PTO shaft guard anchor chains for security. At season end, clean the telescoping sections, apply fresh grease, and store the shaft off the ground in a dry location. Annual inspection of u-joint play (more than 1mm of radial movement indicates replacement is needed) is also recommended.
Q: Does CMN Transmission offer custom PTO shafts for non-standard tractor-implement configurations?
A: Yes. CMN Transmission specializes in custom PTO shaft production for non-standard applications. Provide us with your tractor PTO stub type (spline count and diameter), implement input shaft type, required compressed and extended lengths, horsepower and RPM requirements, and preferred protection type (shear bolt or slip clutch), and our engineering team will produce a dimensional drawing and quotation within 48 hours. We also support full OEM labelling for distributor and dealer orders. Custom orders typically ship within 15 to 25 working days from order confirmation.
Q: What certifications does CMN Transmission's agricultural PTO shaft carry?
A: Our agricultural PTO shaft products carry ISO 9001 quality management system certification, CE marking for compliance with EU machinery safety directives, and TS16949 automotive-grade quality certification for manufacturing process control. These certifications ensure that every tractor PTO shaft we produce meets internationally recognized safety, dimensional, and performance standards. Certification documents are available upon request for import compliance, distributor qualification, or end-user assurance purposes.
Q: Can I use this PTO shaft on other snow blower brands besides Woods?
A: This listing is specifically configured for the Woods SS84-2, SS96-2, and SS108-2. However, the 2400 Series Cat 4 PTO driveline shaft assemblies are compatible with any implement that uses a 1.375-6 spline input, Cat 4 driveline rating, and appropriate PTO horsepower range. Many other brands of large-format snow blowers, rotary tillers, and mulchers use the same driveline series. Contact CMN Transmission with your specific blower model and we will confirm cross-compatibility before you order.

Customer Reviews
James Macallister, Farm Owner, Canada
"Been running a Woods SS96-2 on our property for about six seasons now. Third winter in and the original Weasler shaft finally gave up its u-joints. Ordered the 2400 Series Size 8 replacement from CMN Transmission after comparing a few suppliers. Arrived in about 12 days to Alberta, which I thought was pretty solid from Korea. Slid straight onto the 1.375-6 spline without any hassle. Only took me maybe 25 minutes to swap out. Been clearing a 900-foot gravel lane every storm this winter and zero issues. The guard feels noticeably heavier duty than what came off. Would recommend without hesitation."
Brandon Sellers, Equipment Manager, United States
"I manage snow removal for a private ski resort access road in Colorado, we run a John Deere 6120M with a Woods SS108-2 and the driveline is under serious load basically all December through March. Ordered two 2500 Series assemblies with 4-disc clutch from CMN last September to have one as a spare. The fit and finish honestly surprised me. These aren't the flimsy Chinese shafts I've tried before. U-joints are solid, the yokes have tight tolerances, no play at all when I installed them. Been through 14 storms so far and haven't touched them. Price was about 40 percent less than what my dealer wanted. Really happy."
Karl Brenner, Agricultural Contractor, Germany
"We operate agricultural contracting services in Bavaria and use a Woods SS84-2 mounted on a Fendt 514. Our old PTO driveline shaft needed replacement and the OEM part price from the German dealer was frankly outrageous. Found CMN Transmission online, sent them my tractor model and blower spec, and they confirmed the Size 6 assembly for 60 HP 540 RPM was correct. Delivery to Germany took 10 working days, customs was smooth, packaging was very professional. Installed it, perfect fit, no vibration, shear bolt torqued correctly. Very satisfied with both the product and the technical support before purchase."
Craig Donaldson, Dairy Farm Manager, New Zealand
"I placed an order for a SS96-2 compatible PTO shaft with 1000 RPM configuration back in November. I was a bit nervous ordering from Korea for the first time but the customer service team was really responsive, answered all my questions about spline compatibility within a few hours. Tracking was updated regularly and the parcel arrived in good shape to our farm in South Island. The shaft went on without any drama. We had a rough winter this year with some real heavy falls and it handled everything we threw at it. I'll be back when we need the other blower shaft done."
Erik Lindqvist, Property Manager, Sweden
"Fast shipping, great quality. Ordered Size 8 for our 90 HP tractor, arrived Sweden in about 14 days. The PTO shaft guard is much thicker than the one it replaced. Good product. My main concern was whether the shear bolt spec would match our driveline and CMN confirmed 3500 Nm for the Size 8 was correct before I paid. Small thing but it matters. Everything arrived well packed with grease nipples pre-installed and the u-joints already greased. Fitted it myself in about half an hour. Works perfectly through our first snow season with it. Price was very fair for the quality."
Guillaume Marchand, Facilities Director, France
"Honestly I didn't expect much from an aftermarket replacement but this thing is genuinely well made. We run a Woods SS108-2 at a commercial logistics park and the original shaft gave out after four hard winters. Got the 2500 Assy with 4-disc clutch from CMN, mainly because I liked the idea of the clutch protecting us when we hit the ice ridges at the dock doors. The clutch engagement is smooth and the release is crisp. Build quality is solid, no wobble, the tubes telescope cleanly. The price for a Cat 5 rated assembly was significantly below any other quote I got. Logistics to France was 11 working days, no issues."
Dave Holloway, Equipment Dealer, United States
"We distribute agricultural equipment in the Midwest US and have started sourcing CMN Transmission PTO shafts as our standard aftermarket replacement option for Woods SS series blowers. Customer feedback has been consistently positive. The fitment accuracy is very high, we haven't had a single return for dimensional issues across about 30 units sold. Lead times from Korea are acceptable for our planning cycles and the pricing allows us to offer our customers a competitive alternative to OEM parts. The technical data sheets CMN provides are detailed and accurate, which makes it easy for our staff to confirm compatibility."
Michael Tougas, Estate Manager, Canada
"I ordered PTO parts for two different snow blowers from CMN Transmission in November, one for our Woods SS84-2 and one for a different brand. The SS84-2 shaft was the Size 6 540 RPM tubular assembly. Communication with their team was quick, they replied within a day every time. Shipping to Ontario took 13 days. Both shafts were packed individually, clearly labelled, and came with small bags containing spare shear bolts, which was a nice touch. My mechanic installed both in the same afternoon without any issues. Everything runs smooth. Service was excellent, would use them again."
Piotr Wisniewski, Import Manager, Poland
"We import agricultural machinery components for our Polish distribution network and CMN Transmission has become a reliable supplier for PTO shafts. The 2400 Series drivelines for the Woods SS line have been particularly popular with our farming customers who run large snow clearing operations in the Masovian lowlands. Quality is consistent, certifications are in order, and the factory is responsive to bulk order inquiries. Lead times average 15 to 18 days for our volume orders which is acceptable. We appreciate that CMN can produce with our OEM label if required. Good long-term business partner."
Additional information
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