Aftakas voor Woods sneeuwblazer SB54S, SB64S, SB74C, SB84C

Betrouwbare aftakas voor Woods sneeuwblazers.

PTO Shaft for Woods Snow Blower Model: SB54S, SB64S, SB74C, SB84C

The CMN Transmission PTO shaft for Woods Snow Blower models SB54S, SB64S, SB74C, and SB84C is a precision-engineered agricultural PTO driveline shaft designed to deliver reliable, continuous power from your tractor's output stub to the Woods Standard Duty three-point snow blower attachment. Operating at the industry-standard 540 PTO shaft speed and optimized for tractors ranging from 15 HP (SB54S) to 60 HP (SB84C), this tractor PTO drive shaft incorporates a 1.375"-6 spline interface and Series 2300 driveline specification, matching the exact dimensional and torque requirements of these four models. Whether you are clearing compacted snow from a long residential driveway with the compact 54-inch SB54S or maintaining a farm access lane with the full 84-inch SB84C, this PTO driveline shaft for snow blower applications provides consistent torque transfer across all winter conditions, from light powder to heavy, wet accumulations.

Engineered with a calibrated shear bolt PTO shaft overload protection system, precision-balanced PTO shaft tube sections, hardened PTO shaft universal joints, and an enclosed PTO shaft guard, this replacement unit targets the primary failure modes seen in aging OEM and budget aftermarket components. The shear bolt mechanism disengages the driveline the moment an obstruction is encountered, protecting your snow blower gearbox and tractor transmission from expensive impact damage.

Woods sneeuwblazer modellen

Vrijwel alle sneeuwblazers, ongeacht de fabrikant, gebruiken een eenvoudige aftakas met een breekbout.

Specificaties van de Woods sneeuwblazer

Specificaties van de aftakas van een sneeuwblazer

Kenmerken van de aftakas voor een Woods sneeuwblazer

1. Precision 1.375"-6 Spline Interface
The PTO shaft yoke is machined to an exact 1.375"-6 spline profile, matching the OEM stub shaft on tractors designed for the SB54S, SB64S, SB74C, and SB84C models. This tight, burr-free fit minimizes rotational backlash, eliminating the impact shock that accelerates wear in loosely toleranced aftermarket shafts. Precise spline engagement also ensures proper torque distribution across all six spline lobes, extending both the PTO shaft adapter and tractor stub shaft service life significantly beyond budget alternatives.

2. Series 2300 Shear Bolt Overload Protection
The PTO shaft shear bolt system is calibrated for each size category: 1700 Nm for Size 4, 2700 Nm for Size 6, and 3500 Nm for Size 8 assemblies. When the auger contacts a buried rock or frozen obstruction, the bolt shears cleanly and precisely, halting torque transmission before any force reaches the snow blower gearbox or tractor driveline. This shear bolt PTO shaft design is the industry standard for snow blower applications, offering fast field recovery with replacement bolts that cost cents rather than hundreds of dollars in gearbox damage.

3. Dynamically Balanced PTO Shaft Tubing
CMN Transmission's PTO shaft tube sections are manufactured from high-strength cold-drawn steel and subjected to dynamic balancing during production. At a continuous 540 RPM operating speed, even slight imbalances in PTO shaft tubing translate into significant vibration loads that fatigue welds, accelerate u-joint wear, and transmit harmful resonance into the tractor chassis. Our balanced PTO driveline shaft eliminates this vibration at the source, delivering smoother operation, reduced noise, and a longer service life for the entire drivetrain, including the snow blower gearbox and all attached bearings.

4. Hardened PTO Shaft Universal Joints
Every PTO shaft u joint in this assembly is manufactured from case-hardened, heat-treated alloy steel and fitted with needle-roller cross bearings for maximum load capacity at angular misalignments up to 15 degrees. The PTO shaft universal joint cross kit uses a grease-nipple design that accepts standard tractor grease for field lubrication, extending cross-and-bearing service life well beyond sealed, maintenance-free alternatives in abrasive operating environments. Properly lubricated u-joints are the single most effective maintenance measure for extending the overall PTO shaft length of service.

5. Full-Length PTO Shaft Guard and Cover
The PTO shaft guard supplied with this assembly covers the full rotating length of the shaft from tractor yoke to implement yoke, rotating freely on integral support bearings so it remains stationary while the shaft spins inside. Attached at both ends with safety chains to the tractor and implement frames, the PTO shaft cover prevents clothing, debris, and limbs from contacting the rotating driveline. The guard is engineered to withstand impact from stones and ice debris thrown during operation, and its lightweight design does not add measurable inertia load to the drivetrain.

6. Multi-Model Compatibility Across Four SB Series Models
This tractor PTO shaft is dimensionally verified for compatibility across all four Woods Standard Duty models: SB54S (15-25 HP), SB64S (15-35 HP), SB74C (30-50 HP), and SB84C (35-60 HP). With the shared 1.375"-6 spline specification and Series 2300 driveline standard, one correctly sized shaft assembly covers the full range of subcompact and compact tractor applications in this series. CMN Transmission also offers custom PTO shaft configurations with non-standard PTO shaft dimensions or modified PTO shaft sizes for operators who need extended or shortened assemblies for specific three-point hitch setups.

How Does the Snow Blower PTO Shaft Work

The PTO shaft for Woods Snow Blower SB54S, SB64S, SB74C, and SB84C acts as the critical mechanical bridge between your tractor's power take-off output and the snow blower's internal gearbox system. When you engage the PTO lever on your tractor, the transmission diverts engine torque to the PTO output stub shaft, which rotates at a continuous 540 RPM for all four SB-series models. The PTO shaft yoke on the tractor end of the driveline slides over the 1.375"-6 spline stub shaft, secured with a roll pin or quick-release collar depending on the assembly type. As the stub rotates, the yoke transmits torque through the first hardened PTO shaft u joint, into the outer telescoping tube section of the shaft body.

The PTO shaft tube assembly is a two-piece telescoping design that allows the shaft to extend and retract as the snow blower rises and falls on the tractor's three-point hitch during transport and maneuvering. The Series 2300 PTO shaft tubing uses either a circular cross-section (tubular assemblies) or a star-profile cross-section (splined assemblies) to transmit torque while sliding freely under load. Maintaining the correct PTO shaft length at the working position is essential: the two telescoping halves must overlap by a minimum engagement length at all hitch positions to maintain rated torque capacity. Insufficient overlap risks sudden disengagement and shaft separation, while over-compression at raised hitch positions can bottom out the inner tube against the outer, causing structural failure. Always verify PTO shaft dimensions against the tractor-to-implement distance before fitment.

At each end of the PTO driveline shaft, a hardened cross-and-bearing PTO shaft universal joint compensates for the angular offset between the tractor's horizontal PTO axis and the snow blower's input shaft angle. Properly maintained u-joints allow smooth power transfer through operating angles of up to 15 to 20 degrees. When both u-joints at opposite ends of the shaft are set to equal and opposite angles (phased correctly), the inherent velocity variation produced by a single u-joint is cancelled out, resulting in a constant-velocity output at the implement end. Neglected or dried-out universal joints with insufficient grease are the leading cause of vibration, noise, and premature failure in agricultural PTO shafts of all types.

The shear bolt PTO shaft protection system is the core safety mechanism of this assembly. The shear bolt is installed through a precisely bored cross-hole in the PTO shaft yoke hub, at a cross-section calibrated to fracture at a defined torque threshold before any structural damage can propagate to the snow blower gearbox or tractor PTO bearing. For the Series 2300 Size 4 assembly used with the lighter SB54S model, the bolt shears at 1700 Nm. For the larger Size 6 assemblies serving the SB74C and SB84C, the threshold rises to 2700 Nm. When the auger strikes a buried obstruction such as a frozen drainage grate, concrete edge, or embedded rock, the shear bolt fractures in milliseconds, halting torque flow instantly. Recovery is immediate: remove the broken bolt segments, insert a replacement PTO shaft shear bolt of the correct grade, and resume operation. Critically, only OEM-specified bolt grades should be used as replacements; substituting a higher-grade bolt defeats the protection entirely and risks catastrophic gearbox failure.

At the implement end, the PTO drive shaft for snow blower connects to the input flange of the Woods snow blower's central gearbox via the second yoke and u-joint assembly. The gearbox splits and redirects this rotational input into two separate output paths: one driving the auger system via a combination of gears and chain, and the second driving the fan impeller via a separate gearbox output. The auger feed system gathers and consolidates snow across the full working width of 54 to 84 inches, feeding it into the central fan housing, where the 22 to 24-inch diameter four-blade fan accelerates and throws the snow through the adjustable discharge chute.

Application Areas

1. Sneeuwruimen van de oprit
The primary use case for the Woods SB-series snow blower and its PTO drive shaft. Equipped with a subcompact or compact tractor, this setup efficiently clears accumulated snow from long residential driveways and private access roads, throwing it well clear of the travel surface. The two-stage auger and impeller design handles heavy accumulations of powder, crusted, icy, or wet snow in a single pass, restoring vehicle and pedestrian access quickly after overnight or multi-day snowfall events without requiring multiple overlapping passes.

2. Commercial Parking Lot Maintenance
Clearing snow from large commercial parking lots, storage yards, and business access roads requires a reliable heavy duty PTO-as that can sustain extended continuous operation. The SB84C paired with a 35 to 60 HP compact tractor is particularly effective for commercial lot maintenance, clearing wide paths efficiently to maintain operational access, vehicle safety, and pedestrian navigation during heavy snowfall events. The shear bolt protection system ensures that occasional encounters with parking curbs or drainage grates do not result in costly equipment damage or downtime.

3. Rural Property and Farm Access
Managing snow on expansive rural properties, farm lanes, barnyards, and around agricultural structures requires a tractor PTO driveline shaft that performs reliably across long daily operating hours. This snow blower PTO shaft is designed for exactly these conditions, keeping critical pathways open for livestock care, equipment movement, and daily farm operations throughout winter. The robust Series 2300 construction and heat-treated universal joint assemblies withstand the repeated duty cycles and uneven terrain typical of farm environments, where conditions are rarely as uniform as a cleared residential driveway.

4. Ontruiming van landgoederen en grote percelen
Handling heavy-duty snow removal on large private estates and expansive properties where significant accumulations demand powerful, continuous clearing capability across wide areas benefits greatly from the dynamically balanced PTO shaft tubing and reinforced housing of the SB74C and SB84C models. The precision-engineered PTO driveline shaft for snow blower delivers smooth, vibration-free operation even at extended running times, reducing operator fatigue and equipment wear. Optional hydraulic chute rotation allows directional adjustment from the tractor cab without dismounting, ideal for complex clearing patterns on large grounds.

5. Onderhoud van trottoirs en paden
Clearing walkways, sidewalks, and pedestrian paths at residential complexes, campuses, and recreational facilities is a precise operation that benefits from the narrower working widths of the SB54S (54") and SB64S (64") models. The accurate engagement provided by the precision-machined PTO shaft yoke and balanced driveline ensures the auger maintains a consistent bite depth without surging, enabling controlled, precise snow removal along confined paths. The high discharge throwing distance keeps cleared snow well away from the travel surface, preventing the refreezing and recontamination common with snowblowers that deposit material close to the clearing line.

6. Zwaar uitgevoerde stormschadeherstel
Rapidly processing deep snow drifts and heavy accumulations after major winter storms requires a PTO shaft for snow blower that can sustain peak torque loads continuously without failure. The Series 2300 assembly is rated for the full SB-series horsepower range and features shear bolt protection calibrated precisely for maximum working torque, protecting the drivetrain from the sudden load spikes encountered when cutting through drifts against frozen banks or compacted layers. Whether you are restoring access to a remote property or clearing after a multi-day blizzard, this agricultural PTO shaft keeps your equipment productive through the heaviest seasonal workloads.

Installatiestappen

1. Verify Compatibility and PTO Shaft Dimensions
Before installation, confirm that your tractor's PTO output speed is 540 RPM and that the stub shaft uses a 1.375"-6 spline profile (the standard for tractors paired with the SB54S through SB84C). Measure the distance between the tractor's PTO stub face and the snow blower's input shaft face at both the lowest and highest hitch positions to verify the PTO shaft length and PTO shaft dimensions of the ordered assembly fall within the required operational range. A correctly sized shaft must have sufficient overlap in the telescoping section at both extremes, typically a minimum of one-third of the inner tube length engagement.

2. Prepare the Tractor and Implement
Engage the tractor's parking brake, lower the three-point hitch to the working height, and shut off the engine before beginning any driveline work. Ensure the PTO is fully disengaged and the tractor is on stable, level ground. Clean both the tractor PTO stub shaft and the snow blower input shaft to remove rust, debris, and old grease that could prevent proper spline engagement. Inspect both stubs for wear, damage, or burrs that could prevent full seating of the PTO shaft yoke. Light application of anti-seize compound to the spline area is recommended to facilitate future removal.

3. Connect the Tractor-Side Yoke
Slide the tractor-side yoke of the tractor PTO shaft firmly onto the 1.375"-6 PTO stub shaft, aligning the spline lobes carefully before pushing fully home. You should feel the yoke seat completely against the stub collar. Insert the retention roll pin or engage the quick-release collar lock depending on your assembly type. For roll-pin designs, use the specified pin size and ensure it passes through both the yoke hub and the groove on the stub shaft, securing it with the cotter pin or clip on the opposite end. A yoke that is not fully locked onto the stub is a critical safety hazard during operation.

4. Install and Verify the Shear Bolt
Insert the PTO shaft shear bolt through the cross-hole in the yoke hub, ensuring it is the correct grade and diameter as specified for your assembly size (Size 4, 6, or 8). The bolt must pass cleanly through the hub and the groove in the spline stub without binding, with the securing nut tightened to finger-tight only, since the bolt must shear cleanly at the design torque without any lateral resistance. Carry spare shear pin PTO shaft bolts in the tractor cab whenever operating, as field conditions may require immediate replacement. Never use high-tensile hardware-store bolts as replacements as this can prevent the protection mechanism from functioning.

5. Connect the Implement-Side Yoke
With the tractor end secured, connect the implement-side yoke to the snow blower's input shaft using the same procedure as the tractor end. Confirm the input shaft's spline profile matches the yoke bore (1.375"-6 for all SB-series models) and that the yoke seats fully before securing the retention hardware. Check that the two u-joint yokes at each end of the shaft are aligned in the same plane (phased correctly) to cancel velocity variation and eliminate vibration. Misphased u-joints cause significant vibration and accelerated wear at all driveline speeds. Most assemblies leave the factory with correct phasing, but verify after any disassembly.

6. Attach the PTO Shaft Guard and Safety Chains
Slide the PTO shaft guard into position over the complete assembly and attach the safety chains at both ends to fixed points on the tractor frame and snow blower housing, tensioned just enough to prevent the PTO shaft cover from rotating with the shaft without placing any side load on the guard bearings. The guard must be fully in place before any engine start or PTO engagement. Perform a final visual check: confirm both yokes are locked, the shear bolt is installed correctly, the guard is attached, and all safety chains are secured. Start the engine, engage the PTO slowly, and check for vibration or unusual noise before proceeding to normal operating speed.

Onderhoudstips

1. Lubricate Universal Joints Regularly
The PTO shaft u joint cross kits require grease lubrication at the start of every operating season and every 8 hours of use during heavy-duty operation. Use a quality NLGI #2 lithium-complex grease and pump it through the grease nipple on each cross bearing until fresh grease just begins to emerge from the bearing seals, confirming all four needle-roller cups are filled. During winter operation, cold temperatures thicken grease dramatically, so consider switching to an NLGI #1 or low-temperature formulation if operating below -10 degrees Celsius. Neglected universal joints are the most common cause of premature PTO driveline shaft failure and account for the majority of in-season breakdowns.

2. Inspect and Replace Shear Bolts Before Each Season
Before the first use each winter season, remove and visually inspect the PTO shaft shear bolt in all yoke hubs. Even bolts that have not sheared can develop micro-fatigue from vibration exposure during the previous season, causing them to shear at torque levels below the design threshold. Always replace shear bolts with new stock of the correct grade each season rather than reusing previous-season bolts. Stock a minimum of six replacement shear pin PTO shaft bolts for each snow blower unit and store them in a sealed container in the tractor cab for immediate access in the field.

3. Inspect the PTO Shaft Guard and Cover
The PTO shaft guard and PTO shaft cover should be inspected for cracks, splits, and broken support brackets before each season and after any debris impact. A damaged guard that contacts the rotating shaft generates significant heat and can seize, creating a serious entanglement hazard. Verify that the guard's internal support bearings spin freely and that the safety chains remain attached and correctly tensioned. Replace any guard showing structural damage immediately as operating without a fully intact PTO shaft cover violates safety standards and exposes operators to potentially fatal entanglement hazards.

4. Check Yoke Spline and Tube Wear
At the end of each season, inspect the 1.375"-6 spline bore in each PTO shaft yoke for wear, rounding, or cracking. Spline wear manifests as increased rotational lash when manually rocking the shaft and can cause torque pulses, vibration, and eventual yoke failure if ignored. Similarly, inspect the PTO shaft tubing telescoping interface for wear, debris accumulation, and corrosion that could prevent smooth sliding. Clean the inner tube and outer tube profiles with a wire brush, apply a film of anti-seize grease to the profile surfaces, and verify that the shaft slides freely through its full range before storage.

5. Off-Season Storage Procedure
After the final use of the season, clean the entire agricultural PTO shaft assembly with a pressure washer or rag, removing all snow residue, salt, and organic debris that trap moisture against metal surfaces. Apply a light coat of corrosion-inhibiting spray or grease to all exposed metal, paying particular attention to the telescoping tubes and yoke spline bores. Store the shaft assembly in a dry, covered location, away from direct ground contact. Do not store with the shaft at maximum extension, as this stresses the profile tube profile. Optimal storage is at roughly mid-extension with a cap or plug over each yoke to prevent debris ingress into the spline bore.

6. Annual Torque Verification and Full Inspection
Schedule a complete annual inspection of all PTO shaft parts including cross-kit bearing play, tube overlap engagement length, yoke weld integrity, guard bearing condition, and safety chain anchor points. Use a torque measurement tool to verify that all connection hardware remains within specified torque ranges, as winter thermal cycling causes fastener relaxation. Record the inspection date, observations, and parts replaced. An annual inspection completed before each winter season typically prevents in-season failures and is the most cost-effective maintenance investment for operators who rely on snow removal equipment for farm access or commercial service.

Common Troubleshooting of PTO Shaft for Snow Blower

1. Shear Bolt Breaks Repeatedly
Cause: The most common cause of repeated PTO shaft shear bolt failure is use of the incorrect bolt grade. If a Grade 8 or metric 10.9 hardware bolt is used instead of the specified low-grade bolt, it will not break at the design torque and will instead allow the shock load to pass through to the gearbox. Conversely, if an undersized or heavily corroded bolt is used, it may shear at torques below the operating threshold. Solution: Always use only CMN Transmission specified replacement shear bolts for each assembly size. Repeated shearing under normal operating conditions may also indicate a gearbox internal fault creating elevated resistance and should be investigated further.

2. Excessive Vibration During Operation
Cause: Vibration in a tractor PTO drive shaft assembly typically originates from one of three sources: worn or dry universal joint bearings, misphased u-joint yokes, or a bent or imbalanced PTO shaft tube. Excessive operating angle beyond 15 degrees at either u-joint also generates inherent velocity variation that manifests as vibration at PTO speed. Solution: First, grease all u-joint nipples and test. If vibration persists, check that both yoke pairs are phased (aligned in the same plane). Inspect the tubes for bends by rolling on a flat surface. Reduce the three-point hitch operating angle if excessive. Replace damaged cross-kits with new PTO shaft parts.

3. Clicking or Grinding Noise from Driveline
Cause: A clicking or grinding sound from the PTO drive shaft for snow blower is almost always associated with worn or damaged universal joint needle-roller bearings. As the bearing cups wear and the cross pins develop flat spots, the periodic engagement of damaged surfaces creates rhythmic clicking or grinding sounds that increase in frequency with shaft speed. In extreme cases, a failed cross kit can cause the shaft to become eccentric, leading to rapid escalation in noise and vibration. Solution: Inspect and replace both cross-kit sets as a matched pair. Never replace only one u-joint in a two-u-joint shaft assembly, as the other is typically at a similar state of wear.

4. Power Not Reaching the Implement
Cause: If the tractor PTO is engaged but the snow blower does not operate, the primary suspects are a sheared bolt (most likely), a disconnected yoke on either end of the snow blower PTO shaft, or a failed internal u-joint cross kit where the shaft has separated internally. Less commonly, the tractor PTO clutch itself may have failed to fully engage. Solution: Stop the tractor engine immediately and inspect the shaft visually. Check that both yokes remain seated on their respective stub shafts and that the shear bolt is intact. If the bolt is intact and both yokes are seated, the cross kits should be inspected for internal separation before the next test run.

5. Telescoping Tube Stiff or Stuck
Cause: Stiff or seized PTO shaft tubing in the telescoping section is caused by one of two conditions: debris and corrosion build-up in the profile tube engagement zone, or a bent inner or outer tube that prevents smooth sliding. In cold winter conditions, water infiltration and subsequent freezing inside the profile tube can seize the assembly solid overnight. Solution: Retract the shaft to maximum collapse, clean the profile tube surfaces with solvent to remove all debris and old grease, and apply fresh anti-seize compound to the engagement surfaces. Inspect both tubes for bends by visual sighting along their length. A bent tube must be replaced as straightening will compromise the profile tube tolerances.

6. PTO Shaft Guard Contacting Shaft
Cause: If the PTO shaft guard contacts and rotates with the driveline shaft rather than remaining stationary, the internal support bearings have failed, or the safety chains are absent, allowing the guard to rotate freely. A guard contacting the shaft generates significant frictional heat, can melt or crack the guard material, and creates a dangerous entanglement risk. Solution: Stop operation immediately. Check the safety chains are correctly attached at both ends and are the right length to prevent guard rotation. If chains are intact, the guard's internal bearing has failed, and the complete PTO shaft cover assembly must be replaced before resuming operation.

Aftakas van de sneeuwblazer en versnellingsbak van de sneeuwblazer

The snow blower PTO shaft and the snow blower gearbox are the two interdependent core components of the tractor-mounted snow blower drive system. The PTO driveline shaft for snow blower is the rotational power input to the entire system. It connects the tractor's 540 RPM PTO output stub to the gearbox input flange, transmitting the torque generated by the tractor engine directly into the gearbox housing. For the Woods SB54S, SB64S, SB74C, and SB84C, this shaft operates within the Series 2300 driveline specification and uses a 1.375"-6 spline interface on both ends. The PTO drive shaft must accommodate the angular offset between the tractor and implement caused by the three-point hitch geometry, and the telescoping tube section adjusts for the distance change as the implement is raised or lowered. The shear bolt protection system in the PTO shaft is the first line of defense for the gearbox: when the auger overloads, the bolt shears before the torque spike reaches the gearbox internals.

The snow blower gearbox is a multi-output power divider that receives the 540 RPM input from the PTO shaft and distributes it to two driven systems: the auger assembly (via a secondary gearbox and chain drive) and the fan impeller (via a direct gearbox output). The primary gearbox is typically a right-angle bevel gear unit that changes the rotational axis of the input 90 degrees to drive the auger shaft, while a separate output drives the fan at a fixed speed ratio relative to the PTO input speed. The gearbox housing also serves as the structural backbone of the snow blower, supporting the auger housing, fan volute, and discharge chute on its frame. For the Standard Duty SB-series models, the gearbox is a Cat 3 rated unit, matched precisely to the Cat 3 Series 2300 PTO driveline shaft that feeds it.

The interdependence between the two components is critical: a worn or out-of-balance PTO shaft tube that introduces vibration will accelerate wear in the gearbox input bearing and shaft seal, leading to premature gearbox failure. Conversely, a gearbox with worn internal gears or a seized output shaft can generate torque spikes that repeatedly shear the PTO shaft bolt, incorrectly suggesting a driveline fault when the actual cause is gearbox degradation. When diagnosing snow blower drivetrain problems, always inspect both the PTO shaft parts and the gearbox together, since a root cause failure in one component almost always affects the other.

CMN Transmission supplies both snow blower PTO shafts and snow blower gearboxes as part of a complete agricultural power transmission product range. Sourcing both components from the same ISO-certified manufacturer ensures dimensional compatibility, matched torque ratings, and a single point of contact for technical support, warranty claims, and replacement parts. Whether you need a complete custom PTO shaft for a non-standard tractor-to-implement configuration, a replacement gearbox for a damaged SB84C unit, or a full drive system for a new snow blower build, CMN Transmission has the engineering expertise and manufacturing capacity to fulfill your requirements efficiently and at competitive pricing.

Waarom kiezen voor de aftakasassen van CMN Transmission voor landbouwvoertuigen?

CMN Transmission (Korea) is een van 's werelds toonaangevende leveranciers van aandrijfoplossingen voor de industrie en landbouw, met een productassortiment dat aftakasassen, landbouwversnellingsbakken, hydraulische cilinders, planetaire versnellingsbakken, wormwielkasten, kegeltandwielen, kettingwielen, kettingen, tandheugels, poelies, conische bussen, koppelingen en meer omvat. Het hoofdkantoor is gevestigd in Ansan-si, Gyeonggi-do, Korea, met een productiebasis en meer dan 10 fabrieken waarmee we een samenwerkingsverband hebben. We beschikken over een voorraad van meer dan 150.000 standaardproducten en bedienen klanten in meer dan 53 landen in Noord-Amerika, Europa, Zuid-Amerika, het Midden-Oosten, Afrika, Zuidoost-Azië en Oceanië.

Wat CMN Transmission onderscheidt in de markt voor aftakasassen voor landbouwvoertuigen, is onze toewijding aan fabrieksprijzen zonder concessies te doen aan de kwaliteit. Als geïntegreerd productie- en handelsbedrijf elimineren we de vele tussenhandelaren die de kosten van OEM-vervangingsonderdelen opdrijven. Elke tractor-aftakas die we produceren, wordt vervaardigd met behulp van geavanceerd CAD-ontwerp, precisie-CNC-bewerking, moderne warmtebehandelingsprocessen en strenge kwaliteitscontroles. Onze producten zijn zowel ISO 9001- als CE-gecertificeerd, wat de naleving van internationale veiligheids- en prestatienormen garandeert.

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 custom PTO shaft configurations 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.

Veelgestelde vragen

Q: What PTO shaft size do I need for the Woods SB54S?
A: For the SB54S operating on a tractor up to 25 HP at 540 RPM, you need a Series 2300 540 PTO shaft in Size 4, with a 1.375"-6 spline on both ends and a shear bolt rated at 1700 Nm. The Size 4 tubular assembly with FF1 profile is the standard configuration. If your tractor uses a splined yoke, the equivalent splined assembly is available. Contact CMN Transmission's technical team with your tractor make, model, and three-point hitch configuration to confirm the exact PTO shaft dimensions and length required.

Q: Is this shaft compatible with 1000 RPM PTO tractors?
A: No. The Woods SB54S, SB64S, SB74C, and SB84C are all Standard Duty models designed exclusively for 540 RPM PTO operation. Installing a 1000 RPM PTO shaft or operating these blowers from a 1000 RPM PTO output will severely over-speed the gearbox and fan assembly, causing rapid wear, noise, and likely structural failure. If your tractor has a dual-speed PTO (540/1000 RPM), confirm it is set to 540 RPM before engaging the blower. The 540/1000 RPM configuration applies only to the larger SS84-2, SS96-2, and SS108-2 Heavy Duty series models.

Q: How do I measure the correct PTO shaft length for my setup?
A: To determine the correct PTO shaft length, connect the snow blower to your tractor's three-point hitch in the working position and measure the distance between the face of the tractor's PTO stub shaft and the face of the snow blower's input shaft. Add the required u-joint and yoke depth at each end (typically 100 to 150mm per end depending on the assembly size) to get the required collapsed length. Then raise the hitch to maximum transport height and repeat the measurement. The shaft must remain within its safe telescoping range at both extremes, with minimum one-third of the inner tube engaged at all times.

Q: What shear bolt torque rating applies to the SB84C?
A: The SB84C is designed for tractors in the 35 to 60 HP range at 540 RPM, which corresponds to the Cat 4 driveline category, using a Size 6 PTO shaft shear bolt assembly rated at 2700 Nm. This means the shear bolt will fracture when the transmitted torque exceeds 2700 Nm, protecting the gearbox and PTO from damage. Always replace sheared bolts with the correct grade only. Using a higher-grade bolt defeats the protection mechanism. CMN Transmission includes a supply of correct replacement shear pin PTO shaft bolts with each assembly shipment.

Q: Is this a direct replacement of Weasler PTO shaft units?
A: Yes. CMN Transmission's Series 2300 assemblies are engineered as direct-fit replacement of Weasler PTO shaft units across the SB54S through SB84C model range. The 1.375"-6 spline profile, yoke bore dimensions, u-joint cross-kit standards, and series torque ratings are all matched to Weasler's published specifications for this driveline series. In most cases, installation requires no modification, adapters, or shimming. If you have specific Weasler part numbers, share them with CMN Transmission's technical team for confirmed cross-reference verification before ordering.

Q: What is the difference between tubular and splined PTO shaft assemblies?
A: Both PTO shaft tube configurations transmit the same torque, but differ in the profile of the telescoping interface. Tubular assemblies use a round cross-section tube with a keyway or serration for torque transmission, while splined assemblies use a star, lemon, or polygon-profile tube that transmits torque purely through shape engagement without any keyway. Splined profiles generally offer a larger torque contact area and smoother sliding under load, making them preferred for high-cycle applications. Your selection depends on the original equipment specification: if the original shaft used a splined tube, use the splined replacement; if it used a tubular design, use the tubular version. CMN Transmission can advise based on your existing shaft.

Q: Does the assembly include the PTO shaft guard?
A: Yes. Every CMN Transmission PTO shaft for snow blower assembly ships with a full-length PTO shaft guard and the associated safety chains as standard inclusions. The guard covers the complete rotating length of the shaft from yoke to yoke and is designed to comply with CE and ASABE safety standards for rotating driveline protection. Operating any PTO-driven implement without a fully intact guard is a serious safety violation in most jurisdictions and exposes operators and bystanders to severe entanglement hazards. If you require a replacement PTO shaft cover only, CMN Transmission can supply guard assemblies separately.

Q: Can I order a custom PTO shaft length for a non-standard tractor setup?
A: Yes. CMN Transmission fully supports custom PTO shaft configurations for operators with non-standard tractor-to-implement distances, offset hitch configurations, or modified three-point setups. To order a custom length, provide the required collapsed and extended PTO shaft dimensions, the spline specification at each end, the required torque capacity, and any special yoke flange requirements. CMN's engineering team will prepare a dimensional drawing for your approval before production begins. Custom assemblies are available for both tubular and splined profiles across all PTO shaft sizes in the standard and 2500 series range.

Q: How often should I lubricate the PTO shaft u joint bearings?
A: For standard seasonal snow blower use, grease the PTO shaft u joint cross-kit nipples at the start of each season and every 8 to 10 operating hours thereafter. Use NLGI #2 lithium-complex or equivalent grease rated for low-temperature use if you operate in temperatures below -10 Celsius regularly. Apply grease slowly until fresh grease emerges from each bearing seal, confirming all four needle-roller cups are fully charged. Do not over-grease, as this can blow the seals and expose the bearings to contamination. Also lubricate the telescoping PTO shaft tubing profile surfaces with a light coat of anti-seize grease at each seasonal inspection.

Q: Can this shaft be used with a slip clutch instead of a shear bolt?
A: The standard assemblies for the Woods SB54S through SB84C use shear bolt protection, which is the OEM-specified overload mechanism for these models. CMN Transmission does offer a PTO shaft with slip clutch protection as an upgrade option, available in both the 2300 and 2500 series driveline configurations. A slip clutch PTO shaft provides repeatable overload protection without requiring bolt replacement after each activation, which is preferred for applications with frequent obstruction encounters such as heavy-debris environments. Contact CMN Transmission to confirm slip clutch options compatible with your specific SB-series model and tractor horsepower range before ordering.

Klantenrecensies

James Morrison, Farm Owner, United States
"We run two subcompact tractors on our property in Vermont - one with the SB64S and one with the SB74C - and we had to replace the driveline shaft on the 64 last fall after the original finally wore through after several seasons of hard use. Ordered this Size 4 tubular assembly from CMN Transmission. Fit was dead-on, spline engagement was smooth with no play whatsoever, and the guard quality is noticeably better than what came off the original unit. We're about 60 hours into this season already and it's running perfectly. No vibration, no noise. The shear bolt kit they included was a nice touch. Will be ordering the second one before next winter hits."

Pierre Dubois, Agricultural Operator, France
"I have been using a Woods SB84C with a Kubota BX23S tractor for three seasons. The original PTO shaft failed last February - probably due to joints in bad condition. Placed an order with CMN on a Friday, hand-delivered the following Wednesday, which is frankly impressive. The assembly quality is excellent: the universal joints turn smoothly, the telescopic tubes slide effortlessly, and the provided shear bolts are exactly the right ones. Haven't had the slightest problem since installation. I highly recommend it without hesitation to my neighboring farmers who have similar equipment."

Robert Beauchamp, Property Manager, Canada
"I manage snow removal for a 140-acre rural property in Ontario and we've been running a Woods SB74C behind our New Holland T4.75 for about four years now. The PTO shaft that came with the blower finally showed serious wear on the u-joint cross kits last spring - you could feel the slop in it. Went with this Size 6 splined assembly from CMN. The dimensional drawings they emailed before shipment were a huge help in confirming fitment. Assembly itself was straightforward and took about 20 minutes. We've now done a full season with it - that's roughly 80 hours - and the thing runs like new. No vibration, no clicking. Delivery to Ontario took a week which is acceptable for an overseas order."

Klaus Weber, landbouwcontracteur, Duitsland
"I run an agricultural contracting business in Bavaria and replaced our old Weasler PTO shaft this summer with the Series 2300 Size 6 model from CMN Transmission. The fit is flawless, the weld quality on the yoke is clean and even. The shear bolt protection works exactly as intended - we actually hit a frozen piece of drainage pipe and the bolt snapped cleanly without damaging the gearbox. Replacement bolts were included in the shipment, which was great. CMN clearly deserves the business as a replacement for Weasler products at much more favorable prices."

Lars Eriksen, Farmer, Norway
"Ordered this PTO shaft for my Woods SB84C after the original shaft broke a bearing after four seasons. After price-checking both Weasler and local agricultural dealers, I chose CMN because of the price and the technical information available on the site. The CMN shaft came with complete dimensional drawings via email before shipment. Dimensioning was perfect, no need for adaptation. After 70 hours this season in Østlandet, the shaft looks completely new - no wear on the universal joints, no vibration. Next time we need something, we will definitely use CMN again."

Mikko Virtanen, Snow Removal Contractor, Finland
"We run a professional snow clearing service across several farms in Pirkanmaa region. After the third season with our Woods SB74C setup we replaced the entire PTO shaft as a preventive measure - wanted to go into this season with everything fresh. Chose CMN Transmission after a colleague in Sweden recommended them. The Size 6 tubular assembly shipped in 8 days from Korea. U-joint quality is noticeably better than the local aftermarket unit we had tried before this one - the needle bearings are properly pre-greased and the cross kits feel very solid. Now into our second season with this shaft and total hours are over 110. No issues at all."

Marek Kowalski, Farm Manager, Poland
"We ordered this PTO shaft for our SB64S after the original shaft showed excessive wear on the joints after five seasons of very intensive work on our farm in Lesser Poland (Małopolska). I was afraid we would get something of low quality from Asia - but that's not true. The build quality is really good, the welds are clean, the tubes are perfectly balanced, and the joints work smoothly. Importantly, CMN's technical service answered our questions about the shaft length within a few hours - this was very helpful before ordering. The shipment arrived in 10 days. A very good purchase."

Stefan Gruber, Farm Manager, Austria
"We completely renewed the PTO drivetrain of our Woods SB84C after buying a used tractor. The CMN PTO shaft in Series 2300 Size 6 fit perfectly onto the 1.375-6 splined shaft of our Fendt 208 Vario and onto the input shaft of the snow blower. The telescopic tubes glide without any play, and the protective guard sits securely on its bearings. I particularly like the detailed technical documentation that was included. After two seasons with about 40 operating hours each, the driveline shows no wear whatsoever. The price-performance ratio is very good, especially compared to Bondioli replacement parts through our local dealer."

Erik Lindqvist, Landscaping Contractor, Sweden
"We run a maintenance crew that handles snow removal tasks for three farmers in the Dalarna region. Had a problem with vibration on one of our SB74C units in the middle of winter - turned out to be a worn-out u-joint cross kit. CMN Transmission had a Size 6 tubular assembly in stock and we received it in 9 days, which was faster than we hoped for an international purchase. Assembly took 25 minutes and the machines were back in operation. The vibrations disappeared immediately. Note: remember to always check the phasing on the universal joint yokes when assembling - it's a detail that makes a big difference in operation. Very satisfied with CMN, great product and great service."