{"id":7048,"date":"2026-04-29T02:03:29","date_gmt":"2026-04-29T02:03:29","guid":{"rendered":"https:\/\/korea-transmission.com\/?post_type=product&p=7048"},"modified":"2026-04-29T08:47:04","modified_gmt":"2026-04-29T08:47:04","slug":"pto-shaft-for-massey-ferguson-discbine-1359-1373-1376-1393-1316s-disc-mower","status":"publish","type":"product","link":"https:\/\/korea-transmission.com\/hi\/product\/pto-shaft-for-massey-ferguson-discbine-1359-1373-1376-1393-1316s-disc-mower\/","title":{"rendered":"PTO Shaft for Massey Ferguson Discbine 1359, 1373, 1376, 1393, 1316S Disc Mower"},"content":{"rendered":"

Reliable PTO Shaft for Massey Ferguson Disc Mower Models<\/h2>\n

PTO Shaft for Massey Ferguson Disc Mower Model: 1359, 1373, 1376, 1393, 1316S Disc Mower<\/strong><\/p>\n

The Massey Ferguson 1300 Series disc mower conditioners, including the 1359, 1373, 1376, 1393, and 1316S, are among the most demanding hay-harvesting platforms in commercial agriculture, requiring a disc mower PTO shaft that can handle high-torque, high-speed power transmission across wide articulation angles without vibration or premature wear. CMN Transmission’s replacement PTO shaft for Massey Ferguson disc mower is built around a CAT 6 Double Constant Velocity architecture using the proven 55N series, delivering an 80-degree operating angle on the tractor half and a 50-degree angle on the implement half. This dual-CV design ensures that power flows smoothly to the cutter bed regardless of headland turns, uneven terrain, or angled implement positions, protecting both the tractor PTO output and the discbine gearbox from destructive vibration and shock loads. Every component – from the forged PTO shaft yoke to the heat-treated PTO shaft u joint cross – meets or exceeds OEM tolerances to guarantee a drop-in, no-modification fit.<\/p>\n

In the hay and forage operations, this PTO driveline shaft for disc mower proves its value across multiple application scenarios: seasonal alfalfa cutting on dairy operations, high-volume grass hay harvesting on beef ranches, silage production in wet years, and cover crop termination ahead of planting. Whether your MF 1393 is running at 1000 RPM to power through dense ryegrass, or your 1359 is operating at a steady 540 RPM in lighter clover stands, this heavy duty PTO shaft maintains constant velocity power delivery with minimal heat buildup at the CV joints. The full-coverage PTO shaft cover and PTO shaft guard assembly protects operators from entanglement hazards and shields the driveline from crop debris and soil contamination, contributing to both safety compliance and extended component life. Available as a complete double-CV tractor PTO shaft assembly, or as individual tractor-half and implement-half sub-assemblies for field repair flexibility.<\/p>\n

\"PTO<\/p>\n

Main Shaft: CAT 6 Double Constant Velocity<\/h2>\n

\"PTO<\/p>\n

Original equipment is 55N Weasler 80 degrees on the tractor side and a 50-degree CV on the discbine. Input shafts are usually 1.50″ x 23 splines.<\/p>\n\n\n\n\n\n\n
\u091f\u094d\u0930\u0948\u0915\u094d\u091f\u0930<\/strong><\/td>\n\u0905\u092e\u0932 \u092e\u0947\u0902 \u0932\u093e\u0928\u093e<\/strong><\/td>\n\u0935\u093f\u0935\u0930\u0923<\/strong><\/td>\n<\/tr>\n
1.375-21<\/td>\n1.5″ x 23 spline<\/td>\n55N 80\u00d750 Double CV<\/td>\n<\/tr>\n
none<\/td>\n1.5″ x 23 spline<\/td>\n55N 50 degree CV half(implement)<\/td>\n<\/tr>\n
1.375-21<\/td>\nnone<\/td>\n55N 80 degree CV half(tractor)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Massey Ferguson Disc Mower Model<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0935\u093f\u0936\u0947\u0937 \u0935\u093f\u0935\u0930\u0923<\/th>\n\u092e\u0949\u0921\u0932<\/th>\n<\/tr>\n
1359<\/th>\n1373<\/th>\n1376<\/th>\n1393<\/th>\n1316S<\/th>\n<\/tr>\n<\/thead>\n
Dimensions and weight<\/strong><\/td>\n<\/tr>\n
Width of cut ft. (m)<\/strong><\/td>\n9.3 (2.8)<\/td>\n9.75 (3)<\/td>\n9.75 (3)<\/td>\n13 (4.1)<\/td>\n16 (4.9)<\/td>\n<\/tr>\n
Overall width ft. (m)<\/strong><\/td>\n11 (3.3)<\/td>\n9.8 (3.0)<\/td>\n9.8 (3.0)<\/td>\n13.25 (4)<\/td>\n16.25 (5)<\/td>\n<\/tr>\n
Weight lbs. (kg.)<\/strong><\/td>\n3740 (1,698)<\/td>\n4520 (2,050)<\/td>\n5050 (2,291)<\/td>\n6390 (2,898)<\/td>\n7880 (3,574)<\/td>\n<\/tr>\n
Mainframe and header<\/strong><\/td>\n<\/tr>\n
Pull\/Pivot<\/strong><\/td>\nSide<\/td>\nSide<\/td>\nCenter<\/td>\nCenter<\/td>\nCenter<\/td>\n<\/tr>\n
Header lift range in. (mm)<\/strong><\/td>\n14 (356)<\/td>\n20 (508)<\/td>\n\u2014<\/td>\n18 (457)<\/td>\n18 (457)<\/td>\n<\/tr>\n
Header flotation<\/strong><\/td>\nRadial & vertical with adjustable springs<\/td>\nRadial and vertical with adjustable coil springs<\/td>\n<\/tr>\n
Tires<\/strong><\/td>\n9.5L x 14SL<\/td>\n11L x 15 \/ 31 x 13.5-15<\/td>\n11L x 15 \/ 31 x 13.5-15<\/td>\n12.5L x 15<\/td>\n12.5L x 15<\/td>\n<\/tr>\n
Cutter bed<\/strong><\/td>\n<\/tr>\n
Cutter bar design<\/strong><\/td>\nModular shaft drive<\/td>\nRazorEdge \/ Modular spur gears<\/td>\n<\/tr>\n
Cutting height in. (mm)<\/strong><\/td>\n1.3 to 3.0 (44 to 76)<\/td>\n1 to 4 (25 to 102)<\/td>\n<\/tr>\n
Cutter bar operating range<\/strong><\/td>\n0\u00b0 to 8\u00b0<\/td>\n0\u00b0 to 6\u00b0<\/td>\n<\/tr>\n
Number of discs<\/strong><\/td>\n7<\/td>\n6<\/td>\n6<\/td>\n9<\/td>\n10<\/td>\n<\/tr>\n
\u091a\u093e\u0915\u0941\u0913\u0902 \u0915\u0940 \u0938\u0902\u0916\u094d\u092f\u093e<\/strong><\/td>\n14 (2 per disc)<\/td>\n12<\/td>\n12<\/td>\n16<\/td>\n20<\/td>\n<\/tr>\n
Drive<\/strong><\/td>\nHex shaft from gearbox<\/td>\nSlip clutch with overrunning clutch<\/td>\n<\/tr>\n
Disc speed RPM<\/strong><\/td>\n3000<\/td>\n2220<\/td>\n1814<\/td>\n\u2014<\/td>\n2450<\/td>\n<\/tr>\n
Knife tip speed mph (km\/h)<\/strong><\/td>\n175.8 (289)<\/td>\n168 (270)<\/td>\n137 (220)<\/td>\n178 (287)<\/td>\n\u2014<\/td>\n<\/tr>\n
\u091a\u093e\u0915\u0942<\/strong><\/td>\nReversible, swingaway & opt quick change<\/td>\n<\/tr>\n
Conditioner<\/strong><\/td>\n<\/tr>\n
Roll type<\/strong><\/td>\nSteel on steel or rubber on rubber<\/td>\nSteel on steel, rubber on rubber or tine conditioner<\/td>\nSteel on steel, rubber on rubber or tine conditioner<\/td>\nSteel on steel or rubber on steel<\/td>\nSteel on steel or rubber on steel<\/td>\n<\/tr>\n
Length in. (mm)<\/strong><\/td>\n84 (2,134)<\/td>\n73 (1,900)<\/td>\n73 (1,900)<\/td>\n110 (2,800)<\/td>\n110 (2,800)<\/td>\n<\/tr>\n
Roll Pressure<\/strong><\/td>\nMechanical spring<\/td>\nMechanical spring<\/td>\nMechanical spring<\/td>\nHydraulic<\/td>\nHydraulic<\/td>\n<\/tr>\n
Drive<\/strong><\/td>\nU-joint drivelines from gearbox<\/td>\n3HA or 4HA banded belt with sealed gearcase & Universal Cross bearings joints<\/td>\n<\/tr>\n
Steel roll in. (mm)<\/strong><\/td>\n9.3 (235)<\/td>\n8.2 (209)<\/td>\n8.2 (209)<\/td>\n7.7 (196)<\/td>\n\u2014<\/td>\n<\/tr>\n
Rubber roll in. (mm)<\/strong><\/td>\n9.5 (242)<\/td>\n8 (203)<\/td>\n8 (203)<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n
Roll Speed RPM<\/strong><\/td>\n735<\/td>\n1,045<\/td>\n857<\/td>\n1,037<\/td>\n1,215<\/td>\n<\/tr>\n
Tine conditioner diameter in. (mm)<\/strong><\/td>\n\u2014<\/td>\n18 (462)<\/td>\n\u2014<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n
Number of double tines<\/strong><\/td>\n\u2014<\/td>\n40<\/td>\n\u2014<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n
Tine speed RPM<\/strong><\/td>\n\u2014<\/td>\n952<\/td>\n782<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n
Windrow Width<\/strong><\/td>\n<\/tr>\n
Windrow formation max. in. (mm)<\/strong><\/td>\n72 (1,829)<\/td>\n73 (1,854)<\/td>\n73 (1,854)<\/td>\n96 (2,438)<\/td>\n\u2014<\/td>\n<\/tr>\n
Windrow formation min. in. (mm)<\/strong><\/td>\n30 (762)<\/td>\n42 (1,067)<\/td>\n42 (1,067)<\/td>\n40 (1,016)<\/td>\n\u2014<\/td>\n<\/tr>\n
Tractor Requirements<\/strong><\/td>\n<\/tr>\n
Minimum PTO HP (kW)<\/strong><\/td>\n60 (45)<\/td>\n70 (52)<\/td>\n75 (55)<\/td>\n100 (75)<\/td>\n120 (89)<\/td>\n<\/tr>\n
PTO speed RPM<\/strong><\/td>\n540<\/td>\n540<\/td>\n540 or 1000<\/td>\n1000<\/td>\n1000<\/td>\n<\/tr>\n
Hydraulics<\/strong><\/td>\n2 SCV<\/td>\n2 SCV STD<\/td>\n2 SCV<\/td>\n2 SCV<\/td>\n2 SCV<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Features of PTO Shaft for Massey Ferguson Disc Mower<\/h2>\n

1. CAT 6 Double Constant Velocity Design
\nThe double CV configuration – with an 80-degree joint at the tractor connection and a 50-degree joint at the discbine input – eliminates the cyclic torque variation and vibration that plague single-joint and non-CV PTO drive shafts. This design ensures smooth, constant angular velocity power transmission even during tight headland turns, protecting both the tractor PTO output shaft and the discbine input gearbox from premature fatigue and seal failure.<\/p>\n

2. Exact-Fit 55N Weasler Replacement
\nThis shaft is engineered as a direct replacement of Weasler PTO shaft assemblies specified for the MF 1300 Series discbines. The 1-3\/8″ x 21-spline tractor yoke and 1-1\/2″ x 23-spline implement yoke match factory dimensions precisely, eliminating the need for adapters, shimming, or machining modifications. Customers consistently report the shaft slides straight onto the tractor PTO and discbine input shaft without any fitment issues, saving significant workshop labor time.<\/p>\n

3. Forged Yokes & Heat-Treated U-Joint Crosses
\nEvery PTO shaft yoke is drop-forged from high-strength alloy steel and precisely machined to maintain concentricity within tight tolerances, while the PTO shaft u joint crosses are heat-treated and needle-bearing lubricated for maximum rotational durability. The combination of forged strength and precision machining means the joint assembly can withstand the shock loads generated when a disc knife strikes a rock or embedded debris, transferring the energy through the clutch rather than fracturing the u-joint cross.<\/p>\n

4. Full-Length PTO Shaft Guard & Safety Cover
\nThe complete PTO shaft guard and PTO shaft cover assembly encases the entire rotating driveline from tractor yoke to implement yoke, meeting ISO 4254-1 and CE safety standards for agricultural machinery guarding. The PTO shaft tubing guard is molded from high-impact UV-stabilized polypropylene, resisting cracking and brittleness in cold weather conditions. Retaining chains prevent the guard from rotating with the shaft, and the cone-shaped end shields protect the critical CV joint areas from crop material wrap and soil buildup.<\/p>\n

5. CAT 6 Telescoping Tube for PTO Shaft Length Adjustment
\nThe telescoping PTO shaft tube provides a substantial length adjustment range, accommodating the varying hitch-to-implement distances that occur as the discbine pivots during headland turns and transport positioning. The CAT 6 profile lemon\/triangular tube section provides generous torque capacity while enabling smooth, low-friction telescoping action. Proper PTO shaft length and PTO shaft dimensions adjustment at initial installation is critical to preventing tube bottoming or pull-out during field operation, and the tube overlap markings simplify correct setup.<\/p>\n

6. ISO 9001 & CE Certified Manufacturing
\nCMN Transmission’s manufacturing process for every agricultural PTO shaft is governed by ISO 9001 quality management and CE product safety certification, ensuring consistent dimensional accuracy, material traceability, and torque performance across every production batch. Each shaft assembly passes dimensional inspection, spline fit verification, and rotational balance checks before dispatch. This documented quality system is what differentiates CMN PTO shaft parts from unbranded commodity imports and makes our shafts the trusted choice for commercial operators managing high-utilization harvesting programs.<\/p>\n

\"PTO \"PTO<\/p>\n

How Does the Disc Mower PTO Shaft Work<\/h2>\n

The PTO driveline shaft serves as the sole mechanical link between the tractor’s rear power take-off output and the discbine’s main input gearbox, which in turn drives both the cutter bed disc assemblies and the conditioning rolls. On the MF 1300 Series, the input gearbox must receive a sustained rotational input of either 540 RPM (models 1359, 1373, and optionally the 1376) or 1000 RPM (models 1376, 1393, and 1316S), and any inconsistency in that speed delivery directly affects cut quality, conditioning efficiency, and component longevity.<\/p>\n

The core innovation of this \u092a\u0940\u091f\u0940\u0913 \u0921\u094d\u0930\u093e\u0907\u0935 \u0936\u093e\u092b\u094d\u091f<\/strong><\/a> for discbine is the Double Constant Velocity joint architecture. A conventional single-joint or standard double-Cardan shaft produces a sinusoidal speed variation, the output shaft actually accelerates and decelerates twice per revolution when the shaft is operated at an angle. This pulsation, even at modest angles, transmits a cyclic vibration through the entire drivetrain. At the high PTO speeds demanded by disc mowers, this vibration is especially destructive to gearbox input seals, bearing races, and conditioner roll drive belts. The 80-degree CV joint on the tractor half of this disc mower PTO shaft counteracts this effect by phasing two opposing Cardan joints precisely 90 degrees apart within a centered yoke, canceling the velocity fluctuation and delivering a genuinely constant angular velocity output across the full operating angle range.<\/p>\n

The 50-degree CV joint on the implement (discbine) half operates on the same principle, ensuring that as the discbine header articulates vertically over uneven ground and the tongue swings laterally during headland turns, the input gearbox continues to receive smooth, constant-speed rotational power. The telescoping PTO shaft tubing section between the two CV assemblies accommodates the continuous change in effective shaft length as the implement moves relative to the tractor’s hitch point. The CAT 6 lemon-profile tube sections slide within each other with sufficient overlap to handle the full range of hitch extension and retraction during operation, while the outer tube’s internal bore is machined to a low-friction tolerance to prevent binding or stick-slip behavior.<\/p>\n

Power flows from the tractor PTO output spline into the tractor-side PTO shaft yoke (1-3\/8″ x 21 spline interface), through the 80-degree CV joint assembly, along the inner and outer telescoping tube sections, through the 50-degree CV joint on the implement half, and finally into the 1-1\/2″ x 23-spline implement yoke that bolts to the discbine input gearbox flange. At the center of each CV joint, a precisely phased spider and four needle-bearing PTO shaft universal joint cross assemblies work together to maintain the constant-velocity characteristic. These cross assemblies are pre-packed with high-temperature grease at the factory and sealed with lip seals to retain lubrication and exclude crop debris and moisture from the needle bearing races.<\/p>\n

The outer PTO shaft guard encases the entire rotating assembly. A non-rotating outer tube held stationary by retaining chains anchored to the tractor and implement frames prevents the guard from spinning with the shaft and creating an entanglement hazard. The guard also performs the secondary function of shielding the telescoping PTO shaft tube from crop material wrap, a common cause of premature wear in heavy hay crops, and from soil contamination that can accelerate wear of the sliding tube surfaces.<\/p>\n

\"PTO<\/p>\n

Applications of Disc Mower PTO Shaft<\/h2>\n

1. Hay Harvesting<\/strong>
\nThe primary application for this PTO shaft for disc mower. The MF 1300 Series conditioner cuts grasses and legumes into windrows while integrated conditioning rolls crimp and crack plant stems to accelerate field drying before baling. The double CV shaft delivers constant-speed power to the cutter bed, maintaining precise knife tip speed in both standing and lodged crops, and ensuring the conditioning rolls turn at the correct speed to maximize the stem-cracking action that reduces field dry-down time from multiple days to as little as one day in favorable weather conditions.<\/p>\n

2. Forage Harvesting<\/strong>
\nMowing high-value crops like alfalfa, clover, and perennial ryegrass at the precise stage of maturity requires a reliable tractor PTO drive shaft that delivers consistent power without vibration-induced cutterbar bounce or uneven knife tip speed. This discbine PTO shaft maintains stable rotational input to the cutter bed across varied crop densities – from thin second-cut alfalfa to dense, stemmy first-cut – preserving nutritional content by producing clean cuts that minimize leaf loss from shattering, and supporting maximum RFV (Relative Feed Value) in the harvested forage for dairy and beef livestock operations.<\/p>\n

3. Silage Production<\/strong>
\nCutting crops at higher moisture levels for fermented silage storage in bunkers, pits, or wrapped bales demands a heavy duty PTO shaft capable of sustaining high torque input during continuous high-speed work. This PTO driveline shaft for disc mower handles the elevated drive loads associated with cutting heavy, wet grass and corn stover stands without heat buildup in the CV joint bearings, because the double-CV geometry keeps joint articulation angles within the optimal range even when the MF 1393 or 1316S is pushed at maximum forward speed to achieve fast, even cutting for uniform fermentation quality across the silage clamp.<\/p>\n

4. \u091a\u093e\u0930\u093e\u0917\u093e\u0939 \u092a\u094d\u0930\u092c\u0902\u0927\u0928<\/strong>
\nTopping and trimming pastures to control rank stemmy growth, remove seedheads, and encourage fresh palatable regrowth for grazing animals is a lower-intensity application but one that still demands a reliable disc mower PTO shaft. The MF 1359 paired with a dependable 540 PTO shaft is well suited to mid-season pasture renovation work, where the ability to cut cleanly at varying heights – from 1.3 to 3.0 inches on the 1359 – supports selective removal of mature stems while leaving desirable shorter vegetation intact to maintain sward density and ground cover for livestock grazing.<\/p>\n

5. Cover Crop Termination<\/strong>
\nCutting down winter cover crops such as cereal rye, vetch, or triticale ahead of cash crop planting season requires a PTO shaft tractor connection capable of driving the disc mower through dense, lodged biomass without stalling or binding. This agricultural PTO shaft handles the variable resistance encountered in cutting mixed-species cover crop blends at the termination stage, leaving the biomass as a protective mulch layer on the soil surface to suppress summer annual weeds, conserve soil moisture, and protect soil structure. The 1000 RPM models (1393, 1316S) can cover large acreages rapidly to meet tight planting windows in high-production row crop systems.<\/p>\n

6. Roadside & Specialty Mowing<\/strong>
\nMaintaining roadsides, drainage ditches, airport buffer strips, and conservation headlands where a clean, controlled cut is needed in irregular or sensitive areas places specific demands on the PTO drive shaft system. The ability of the double-CV discbine PTO shaft to absorb angular variation during tight turns and over uneven embankments means the cutter bed receives steady power input even in challenging terrain. The integrated overrunning clutch in the MF 1373 and 1376 drive system, combined with the smooth power delivery of this PTO shaft for Massey Ferguson discbine, prevents cutter bed damage from sudden ground contact or embedded objects in unmanaged margins.<\/p>\n

\"PTO<\/p>\n

How to Install PTO Shaft on Your Massey Ferguson Disc Mower<\/h2>\n

1. Safety First – Disengage PTO and Lower the Implement
\nBefore handling any PTO shaft parts or beginning installation, ensure the tractor engine is fully stopped, the PTO engagement lever is in the disengaged position, and the MF disc mower header has been lowered to the ground or blocked securely. Remove the ignition key and wait a minimum of two minutes to allow any residual hydraulic pressure to dissipate. Never attempt to remove or install a tractor PTO shaft while the engine is running, as the rotating PTO stub shaft presents a severe entanglement hazard even at low RPM.<\/p>\n

2. Remove the Old PTO Shaft and Inspect the Spline Connections
\nPress the push-pin release button on the existing tractor-side PTO shaft yoke and slide the yoke off the tractor PTO stub shaft. Disconnect the implement-side connection at the discbine input flange. Clean both the tractor PTO output stub and the discbine input shaft splines thoroughly with a wire brush to remove accumulated grease, crop debris, and light surface corrosion. Inspect the tractor stub shaft spline teeth for wear or deformation. Worn splines on the tractor side will cause premature wear of the new PTO shaft adapter yoke bore and should be addressed before installing the replacement shaft.<\/p>\n

3. Verify Correct PTO Shaft Length and Tube Overlap
\nBefore final installation, position the tractor and discbine in the straight-ahead working position and measure the distance from the tractor PTO stub to the discbine input shaft. Collapse the telescoping PTO shaft tube and measure against this distance, verifying that the overlap between inner and outer tubes is at minimum 1\/3 of the collapsed tube length in working position – typically a minimum of 150 mm overlap. Also verify that the shaft does not bottom out (full compression) when the implement is raised to transport height. Incorrect PTO shaft length assessment is the most common cause of shaft failure within the first season.<\/p>\n

4. Connect the Tractor-Side Yoke and Secure the Lock Collar
\nApply a thin coat of anti-seize compound or clean grease to the tractor PTO stub shaft splines. Align the 1-3\/8″ x 21-spline tractor yoke with the stub shaft, ensuring the timing marks align if present, and push the yoke firmly onto the shaft until the spring-loaded push-pin audibly clicks into the retention groove. Tug the yoke backward firmly to confirm the lock is fully engaged. A partially seated yoke is a critical safety hazard with a tractor PTO drive shaft and can result in the shaft disengaging at operating speed.<\/p>\n

5. Connect the Implement Half and Attach Guard Retaining Chains
\nConnect the 1-1\/2″ x 23-spline implement yoke to the discbine input gearbox shaft, tightening the retaining hardware to the torque specification stated in the MF operator manual. Route the PTO shaft guard retaining chains – one to the tractor drawbar and one to the implement hitch frame, with just enough slack to allow full range of movement without the guard rotating with the shaft. Verify that the guard covers the entire shaft assembly end to end and that no section of rotating metal is exposed. Conduct a final visual check before engaging the PTO for the first time.<\/p>\n

\"PTO<\/p>\n

PTO Drive Shaft Maintenance<\/h2>\n

1. Daily Pre-Season Greasing<\/strong>
\nAt the start of each mowing season and every 8-10 hours of operation, grease all PTO shaft u joint grease nipples with a quality lithium EP2 grease gun until fresh grease appears at the needle bearing seals. Also lubricate the telescoping tube inner bore through its dedicated grease nipple to prevent the PTO shaft tubing from seizing in the outer tube under heavy lateral loads. The CV joint pivot balls and sockets also require periodic greasing through their individual fittings to maintain smooth constant-velocity articulation and prevent premature wear of the ball seats.<\/p>\n

2. Regular Guard and Cover Inspection<\/strong>
\nInspect the PTO shaft cover and guard assembly at every service interval for cracks, missing retaining clips, damaged cone shields, and worn anti-rotation chains. A cracked or broken PTO shaft guard must be replaced immediately – even a partial guard failure removes critical operator protection from the rotating shaft. Also check that the guard retaining chains are not so tight that they restrict shaft movement, nor so loose that the guard drags on the ground during transport, which rapidly destroys the guard tubing material.<\/p>\n

3. End-of-Season Storage Preparation<\/strong>
\nAt season end, disconnect the agricultural PTO shaft from both the tractor and the discbine, thoroughly clean the entire assembly with a pressure washer, and allow it to dry before applying a protective coat of grease to all exposed metal surfaces. Fully grease all u-joints and the telescoping tube, then store the shaft in an extended (not collapsed) position if possible to prevent the inner tube from sticking in the outer tube over the winter. Store indoors or in a dry shed away from direct UV exposure, which degrades the guard material over multiple seasons.<\/p>\n

4. Annual U-Joint and CV Joint Wear Check<\/strong>
\nOnce per season or every 100 operating hours, grasp the shaft on both sides of each PTO shaft universal joint and apply firm rotational back-and-forth torque. Any detectable rotational lash or clunking indicates worn needle bearing races and the joint should be replaced before the next season. Do the same check on the CV joint assemblies by applying angular force to test for play in the ball-and-socket elements. Catching worn joints early prevents the progressive failure that can damage the discbine input gearbox housing a far more expensive repair than replacing PTO shaft parts proactively.<\/p>\n

\"PTO<\/p>\n

Common PTO Driveline Shaft Faults & Solutions<\/h2>\n

1. Excessive Vibration Through Tractor Cab at PTO Engagement
\nVibration is one of the most common symptoms of a failing PTO drive shaft. Check for worn or loose PTO shaft u joint cross bearings by performing the rotational lash test described in the maintenance section. Also check that the telescoping tube is not damaged, bent, or running with insufficient overlap, as a kinked or misaligned PTO shaft tube creates imbalance. Confirm that the shaft angle during operation does not exceed the rated operating angle for each CV joint. Angles exceeding the design limit generate cyclic vibration even with a new shaft. If vibration persists after joint replacement, inspect the discbine input gearbox for worn input shaft bearings, which can transmit vibration back through the entire driveline.<\/p>\n

2. PTO Shaft Telescoping Tube Binding or Seizing
\nBinding in the PTO shaft tubing telescoping section is almost always caused by insufficient or contaminated lubrication in the sliding bore, or by crop material, especially dry grass stems or cereal straw, working past the end seal into the tube-on-tube interface. Disconnect the shaft, separate the inner and outer tubes, clean the bore and shaft OD thoroughly, and re-lubricate with a generous application of EP2 grease or a dedicated shaft tube lubricant. If the tube surfaces show scoring or pitting from abrasive contamination, replacement of the tube assembly is required to prevent progressive galling and complete seizure, which places severe lateral bending loads on the CV joints and yokes.<\/p>\n

3. Shaft Disconnecting or Jumping Out of Tractor PTO
\nIf the tractor PTO shaft yoke disengages from the tractor PTO stub shaft during operation, the push-pin locking mechanism is either worn, damaged, or not fully seated. Inspect the push-pin groove on the tractor PTO stub shaft for wear – a shallow or worn groove will not retain the pin under axial load. Also check the spring tension on the push-pin in the yoke bore: a weak or broken spring allows the pin to retract under vibration. Replace the tractor-side yoke or the complete PTO shaft parts assembly if the push-pin mechanism cannot be restored to positive engagement, as a shaft that disengages at working speed presents a severe safety hazard to the operator and bystanders.<\/p>\n

4. Overheating at the CV Joint Area
\nHeat buildup at the CV joint housings of a disc mower PTO shaft during operation indicates either inadequate lubrication in the ball-and-socket assembly, operation at angles exceeding the joint’s rated maximum, or a combination of both. First verify that the joint has been properly greased through its dedicated nipple. Then check the tractor-to-implement geometry at the working position to ensure the shaft angle stays within the 80-degree maximum for the tractor half CV and 50-degree maximum for the implement half. Operating at excessive angles generates significant frictional heat in the CV ball contact zones, accelerating ball and socket wear exponentially. Prolonged overheating permanently damages the joint seals, allowing grease to escape and contaminants to enter.<\/p>\n

5. Uneven or Inconsistent Cut Quality on the Disc Mower
\nIf the MF discbine is producing a ragged, inconsistent, or streaky cut despite sharp knives and correct cutting height settings, the problem may originate in the PTO driveline shaft for disc mower rather than the cutter bed itself. A worn or failing double CV assembly that has lost its constant-velocity characteristic will deliver a pulsating rotational input to the cutter bed gearbox, causing disc speed variation that produces uneven cuts especially visible as speed stripes or missed stems in standing crops. Replace the CV joint assemblies or the complete PTO shaft for disc mower and reassess cut quality before performing more invasive cutter bed work.<\/p>\n

\"PTO<\/p>\n

Disc Mower PTO Shaft and Disc Mower Gearbox<\/h2>\n

The disc mower PTO shaft is the external driveline component that connects the tractor’s rear power take-off output to the disc mower or discbine’s input gearbox. On the Massey Ferguson 1300 Series, this is a CAT 6 Double CV assembly rated for both 540 RPM and 1000 RPM operation, depending on the model. The PTO drive shaft must transmit the full torque demand of the disc mower, which on a large model like the 1316S can require 120 HP (89 kW) across variable operating angles created by hitch geometry, terrain changes, and headland maneuvering. Its double constant-velocity design is specifically engineered to eliminate the torque pulsation that would otherwise cause premature fatigue in the downstream gearbox components. The agricultural PTO shaft is an external, serviceable component that farm operators can replace in the field without specialized tools, making it the first line of defense in protecting the more expensive internal drivetrain components from shock load damage.<\/p>\n

The tractor PTO shafts available from CMN Transmission for MF discbines are offered as complete assemblies or as individual halves – tractor-side or implement-side – giving operators the flexibility to replace only the worn portion of the driveline rather than the entire shaft. The custom PTO shaft options CMN offers for non-standard applications, including extended-length shafts for wide offset hitch configurations and special spline sizes for unusual tractor models, make CMN the preferred supplier for dealers and custom farming contractors who operate mixed fleets requiring non-standard PTO shaft sizes.<\/p>\n

The disc mower gearbox (also called the input gearbox, main gearbox, or drive gearbox) is the primary internal component that receives rotational power from the PTO driveline shaft and distributes it to the cutter bed disc assemblies and conditioning roll drive system. On the MF 1300 Series, the main gearbox is a high-ratio, bevel gear unit that converts the tractor PTO input speed to the higher disc rotation speed required for efficient cutting – the MF 1373 discs spin at 2,220 RPM despite a 540 RPM PTO input, representing a gear ratio that generates substantial torque multiplication and heat. The gearbox housing is cast from high-strength ductile iron for rigidity and heat dissipation, and the internal bevel and spur gears are precision-ground to ensure quiet, efficient operation across the full load range. CMN Transmission also supplies replacement disc mower gearboxes for the MF 1300 Series as part of our comprehensive agricultural drivetrain parts inventory.<\/p>\n

A worn or vibrating PTO shaft for Massey Ferguson discbine that delivers a pulsating, non-constant input to the gearbox accelerates wear of the gearbox input shaft bearing, input shaft seal, and the first-stage bevel gear mesh. Conversely, a worn gearbox with excessive input shaft runout or bearing play can transmit vibration back through the driveline that mimics the symptoms of a worn PTO shaft. Diagnosing drivetrain vibration on a disc mower therefore requires systematic evaluation of both the PTO shaft parts and the gearbox input assembly. CMN’s technical support team can assist operators in determining whether the fault originates in the tractor PTO drive shaft or the internal gearbox, minimizing unnecessary part replacement and reducing diagnostic time in the workshop. The ideal maintenance strategy is to inspect and service both components at the same time to ensure the complete driveline system is renewed as a unit, maximizing reliability and longevity across the full hay season.<\/p>\n

\"Disc<\/p>\n

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

CMN Transmission (Korea) stands as one of the world’s leading suppliers of industrial and agricultural power transmission solutions, with a comprehensive 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 dedicated 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.<\/p>\n

    \n
  • Global Reach, Local Service:<\/strong> CMN Transmission (Korea) serves customers in over 53 countries across North America, Europe, South America, the Middle East, Africa, Southeast Asia, and Oceania. Our global logistics network means fast, reliable delivery of tractor PTO shafts and PTO shaft parts to agricultural operations in virtually every farming region worldwide, with responsive multilingual customer support available throughout the purchase process.<\/li>\n
  • Factory-Direct Pricing Without Compromise:<\/strong> As an integrated manufacturing and trading company headquartered in Ansan-si, Gyeonggi-do, Korea, with a production base and over 10 cooperative factories, CMN eliminates the multiple dealer markup layers that inflate the cost of OEM PTO drive shaft replacements. Every agricultural PTO shaft we produce is priced factory-direct, delivering OEM-comparable quality at 30-50% below OEM dealer pricing in most markets.<\/li>\n
  • ISO 9001, CE & TS16949 Certified:<\/strong> Every CMN disc mower PTO shaft and PTO shaft parts assembly is produced within a certified quality management system meeting ISO 9001, CE Machinery Directive, and TS16949 automotive-grade process standards. This triple certification framework ensures dimensional consistency, material traceability, and performance reliability across every production batch – the documented quality assurance that separates CMN from unbranded generic imports.<\/li>\n
  • 150,000+ Standard Products in Stock:<\/strong> With an inventory of more than 150,000 standard stock products spanning PTO driveline shafts, agricultural gearboxes, hydraulic cylinders, planetary gearboxes, worm gearboxes, bevel gears, chain sprockets, chains, gear racks, pulleys, taper bushes, and couplings, CMN provides a true one-stop source for complete agricultural drivetrain solutions. No waiting for special order lead times on standard PTO shaft sizes and configurations.<\/li>\n
  • Expert Pre-Sale & After-Sale Support:<\/strong> Our technical team provides pre-sale consultation to confirm spline configurations, PTO shaft dimensions, and clutch specifications for your exact tractor and implement combination, sending dimensional drawings upon request. After purchase, our one-stop after-sales service ensures replacement components, technical guidance, and warranty support remain accessible throughout the product lifetime – a level of post-purchase care that large OEM brands operating through multi-tier dealer networks cannot match.<\/li>\n
  • Full Custom PTO Shaft Capability:<\/strong> For non-standard applications requiring special spline sizes, extended PTO shaft length, non-standard tube profiles, or custom yoke configurations, CMN offers full OEM and ODM manufacturing capability with CAD-based design, precision CNC machining, and modern heat treatment processes. Whether you need a custom PTO shaft for a prototype implement, a fleet standardization project, or a non-standard tractor model, CMN’s engineering team can deliver a tested, certified solution to your exact specification.<\/li>\n<\/ul>\n

    CMN Transmission (Korea) stands as one of the world’s leading suppliers of industrial and agricultural power transmission solutions. When you choose CMN Transmission, you are choosing a partner committed to keeping your equipment running efficiently, reliably, and safely, season after season – from the first cut of spring to the last bale of autumn.<\/p>\n

    \"\u092b\u093c\u0948\u0915\u094d\u091f\u0930\u0940\"\u092b\u093c\u0948\u0915\u094d\u091f\u0930\u0940<\/p>\n

    \u0905\u0915\u094d\u0938\u0930 \u092a\u0942\u091b\u0947 \u091c\u093e\u0928\u0947 \u0935\u093e\u0932\u0947 \u092a\u094d\u0930\u0936\u094d\u0928<\/h2>\n

    Q: What PTO shaft fits a Massey Ferguson 1359 disc mower?<\/strong>
    \nA: The Massey Ferguson 1359 disc mower uses a CAT 6 Double Constant Velocity PTO shaft for disc mower from the 55N Weasler series, with a 1-3\/8″ x 21-spline tractor yoke (1.375-21) and a 1-1\/2″ x 23-spline implement yoke (1.50″ x 23). The tractor-side CV joint is rated to 80 degrees and the implement-side CV is rated to 50 degrees. The 1359 operates at a 540 RPM PTO speed, requiring a 540 PTO shaft configuration. CMN Transmission supplies this shaft as a complete assembly or as individual half-shaft components for field repair flexibility.<\/p>\n

    Q: What is the spline size on the MF 1373 discbine PTO shaft input?<\/strong>
    \nA: The MF 1373 discbine input shaft uses a 1-1\/2″ x 23-spline (1.50″ x 23) interface for the implement side of the PTO driveline shaft. The tractor side connects to a standard 1-3\/8″ x 21-spline PTO output shaft, which is the most common tractor PTO spline size for tractors in the 70-90 HP range used with the 1373. The 1373 operates at 540 RPM PTO speed. When ordering PTO shaft parts for the 1373, always specify both spline sizes to ensure correct fitment of both yokes, as the tractor-side and implement-side splines are different specifications on this application.<\/p>\n

    Q: Can I use a 1000 RPM PTO shaft on the MF 1376 discbine?<\/strong>
    \nA: Yes – the MF 1376 is unique in the 1300 Series in being compatible with both 540 RPM and 1000 RPM PTO operation, as confirmed in the official Massey Ferguson technical specifications. This makes the CMN CAT 6 Double CV PTO drive shaft supplied for the 1376 a dual-speed rated assembly. When operating at 1000 RPM, the 1000 PTO shaft configuration increases disc speed and knife tip speed for improved cutting performance in heavier crop stands. Operators should verify their specific tractor PTO output speed setting and ensure the shaft and discbine input gearbox are both rated for the selected PTO speed before engaging the tractor PTO shaft.<\/p>\n

    Q: What is the difference between a single CV and double CV disc mower PTO shaft?<\/strong>
    \nA: A single CV PTO drive shaft has one constant-velocity joint at one end, typically the tractor end, to reduce vibration during moderate-angle operation. A double CV agricultural PTO shaft – like this CMN unit – has two CV joints, one at each end of the telescoping tube, providing constant-velocity delivery even at high articulation angles at both the tractor and implement connections simultaneously. For disc mower conditioners like the MF 1300 Series that are frequently operated during wide headland turns and over uneven terrain, a double CV design is essential to prevent the cyclic vibration and torque pulsation that accelerate wear in the cutter bed gearbox and conditioner roll drive components.<\/p>\n

    Q: What does CAT 6 mean on a PTO driveline shaft?<\/strong>
    \nA: CAT 6 (Category 6) refers to the European standard classification system for agricultural PTO shaft sizes and torque ratings. CAT 6 represents a heavy-duty shaft specification designed for implements requiring 75 HP (56 kW) or more and corresponding to a rated torque of approximately 1,500 Nm. The CAT 6 designation defines the tube profile (lemon\/triangular shape and dimensions), yoke bore dimensions, and minimum torque capacity for the complete assembly. For MF 1300 Series discbines requiring up to 120 HP input on the 1316S, a CAT 6 tractor PTO shaft is the correct specification. Lower categories (CAT 4, CAT 5) are not suitable for these high-horsepower implements and must not be substituted.<\/p>\n

    Q: How do I replace a Weasler PTO shaft on my Massey Ferguson discbine?<\/strong>
    \nA: Replacing the Weasler PTO shaft on a MF discbine with a CMN equivalent is a straightforward field procedure. Disengage and stop the tractor, then push the release pin on the tractor-side yoke to slide it off the PTO stub. Disconnect the implement half at the discbine input gearbox flange. Clean both connection points, verify the replacement shaft’s spline sizes match (1-3\/8″ x 21 tractor, 1-1\/2″ x 23 implement), and check the shaft length against the connection distance with the implement in working position. Slide the tractor yoke onto the stub until the push-pin clicks, connect the implement yoke, and attach the guard retaining chains before operating. Full installation takes approximately 30-45 minutes with basic hand tools.<\/p>\n

    Q: Does the CMN PTO shaft come with a safety guard included?<\/strong>
    \nA: Yes. Every CMN disc mower PTO shaft assembly is supplied complete with a full-length PTO shaft guard and PTO shaft cover system, including both end cone shields that cover the CV joint areas, the central guard tube covering the telescoping section, and the anti-rotation retaining chains. The guard meets ISO 4254-1 and CE Machinery Directive safety requirements for agricultural PTO shaft guarding. Replacement guard sections, end cones, and retaining hardware are also available separately from CMN Transmission for operators who need to repair a damaged guard on an otherwise serviceable shaft assembly.<\/p>\n

    Q: How long is the correct PTO shaft length for the MF 1393 discbine?<\/strong>
    \nA: PTO shaft length for the MF 1393 depends on the specific tractor being used and the drawbar setting, as different tractor models have different hitch-to-PTO stub distances. The correct approach is to connect the tractor and discbine, measure the distance between the two connection points with the implement in the working (lowered) position, and compare this against the CMN shaft’s collapsed and extended length specifications – ensuring at least 1\/3 tube overlap at working length and no tube bottoming when the implement is raised to transport height. CMN’s technical team can assist with shaft length selection based on your specific tractor model and drawbar configuration to ensure correct PTO shaft dimensions for your setup.<\/p>\n

    Q: How do I know when my discbine PTO shaft needs replacing?<\/strong>
    \nA: Key indicators that your PTO shaft for discbine needs replacement include: audible clunking or rattling sounds from the driveline during acceleration or deceleration; detectable rotational lash (back-and-forth play) when you grip the shaft and rotate it firmly by hand near each u-joint; vibration felt through the tractor cab that was not present when the shaft was new; overheating at the CV joint areas; visible wear or scoring on the PTO shaft tube sliding surfaces; or grease leaking from u-joint needle bearing seals. Any cracked, broken, or missing sections of the PTO shaft guard should also be addressed immediately. Proactive annual inspection prevents catastrophic mid-season failures that can damage the discbine input gearbox.<\/p>\n

    Q: Can CMN supply a custom PTO shaft for a non-standard tractor spline configuration?<\/strong>
    \nA: Yes. CMN Transmission offers custom PTO shaft manufacturing for operators using non-standard tractor models or requiring unusual spline combinations, shaft lengths, or yoke configurations. Our engineering team can produce PTO shaft adapter yokes for uncommon spline sizes, extend shaft lengths for wide-offset hitch setups, or supply heavy-duty reinforced versions for exceptionally high-HP applications. Contact our technical sales team with your tractor PTO stub shaft dimensions, implement input shaft specifications, and required PTO shaft length and we will prepare a custom quotation with dimensional drawings for your approval before production. Custom lead times are typically 2-4 weeks depending on specification complexity.<\/p>\n

    Q: What is a shear bolt PTO shaft and does the MF discbine use one?<\/strong>
    \nA: A shear bolt PTO shaft (also called a shear pin PTO shaft) uses sacrificial bolts or pins as the overload protection element: when the implement hits an obstruction, the bolt or pin shears to interrupt the driveline before damage reaches the gearbox or cutter bed. The MF 1373, 1376, 1393, and 1316S models use a slip clutch with overrunning clutch for overload protection rather than a PTO shaft shear bolt design. The 1359 uses a direct hex shaft drive from gearbox. The slip clutch design (which can also be described as a slip clutch PTO shaft system) offers the advantage of automatically re-engaging after the obstruction clears without requiring the operator to stop and replace a PTO shaft shear bolt, improving operational efficiency in fields with high debris risk.<\/p>\n

    \"PTO<\/p>\n

    \u0917\u094d\u0930\u093e\u0939\u0915 \u0938\u092e\u0940\u0915\u094d\u0937\u093e\u090f\u0901<\/h2>\n

    Jake Morrison, Farm Manager, United States<\/strong>
    \n“We run a 1393 on our 420-acre alfalfa operation and the original Weasler shaft finally gave out after five seasons – u-joint cross grenaded mid-field in heavy second cut. Ordered CMN’s double CV replacement. The 1-1\/2″ x 23 implement spline fits perfectly, no adapter, just slid right in. We’re about 220 hours in on this shaft now, three cuts of alfalfa plus some grass hay, and it runs dead smooth – noticeably less vibration through the cab than the old Weasler was giving even before it failed. Build quality on the guard is solid too, not the flimsy stuff you get from cheap imports. Fits the PTO shaft dimensions exactly.”<\/p>\n

    Klaus Weber, Dairy Farmer, Germany<\/strong>
    \n“I was skeptical about ordering a PTO shaft for Massey Ferguson discbine from an Asian supplier after having a bad experience with a cheap replacement three years ago. But CMN came recommended by a dealer friend who stocks their gearboxes. The shaft arrived well-packaged, all specs matched exactly CAT 6, 80-degree CV on the tractor, 50-degree on the MF 1376. We installed it on a Tuesday and had it cutting grass by Thursday. Four months on and not a single issue. The grease nipples are in the right places and easy to access. The price was less than half of what the Walterscheid dealer quoted. Very satisfied.”<\/p>\n

    Pierre Leclerc, Livestock Farmer, France<\/strong>
    \n“The shipping was faster than I expected, arrived in 9 days in Normandy. I ordered just the implement half the 50-degree CV side, because the tractor half on my MF 1373 was still serviceable. CMN’s team confirmed the part number over email before I ordered, which I really appreciated. The half-shaft arrived with the correct 1-1\/2″ x 23 spline and the plastic guard cone in perfect condition. Installation took maybe 45 minutes. My 1373 has been back working in our ryegrass and clover fields for two months now, no vibration, no heat. For a partial replacement of a Weasler PTO shaft section, this was an excellent value.”<\/p>\n

    Brad Campbell, Sheep Station, Australia<\/strong>
    \n“Out here we’re a long way from any dealer, so when the shaft on the 1359 let go during hay making, I needed a replacement shipped quickly, and it needed to be right the first time. CMN answered my inquiry the same day, confirmed the specs, and had it on its way within 48 hours. Got here in 12 days. Fit was spot on, exactly what the 1359 needed. The only reason I gave 4 stars rather than 5 is the guard retaining chain could be a bit longer for my particular hitch setup; I had to add a link myself. But the shaft itself, the CV joints, the PTO shaft yoke quality – all excellent. Will order again without hesitation.”<\/p>\n

    Mike Thibodeau, Mixed Farm, Canada<\/strong>
    \n“Been using CMN parts for about three years now, mostly gearboxes, but this was my first PTO shaft order. I have a 1376 running on a 100-hp John Deere, yes, a non-MF tractor; the 1-3\/8″ x 21 spline on the tractor half worked fine. Full double CV assembly, 540 and 1000 RPM capable. We run it at 1000 RPM in heavier grass stands to get the knife tip speed up, and at 540 in lighter second cut. The 1000 PTO shaft configuration runs perfectly smooth in both modes. CMN’s pre-sale support was great – they sent me a dimensional drawing to confirm the shaft length before I ordered, which saved any guesswork. That kind of technical service from an aftermarket supplier is rare.”<\/p>\n

    James Whitfield, Arable Contractor, United Kingdom<\/strong>
    \n“Running a commercial mowing contracting operation with two MF 1393s and a 1316S. PTO shafts are wearing parts for us – we do about 2,500 acres of grass hay per year, and I was spending a fortune on OEM replacements. Switched to CMN two seasons ago after a recommendation from another contractor. The quality is genuinely comparable to the OEM Weasler units but at roughly 40-50% less cost. The double CV design is correct for the 1393 application – you really do need that PTO shaft with slip clutch and double CV combination in commercial work where the discbine is being turned hard at headlands all day long. Service from CMN is very responsive, always gets replies the same day.”<\/p>\n

    Shane McGregor, Beef & Sheep Farm, New Zealand<\/strong>
    \n“Down here on the Canterbury Plains, we work the MF 1373 hard through ryegrass and clover mixes, and the original PTO shaft was showing its age some rotational slop in one of the u-joints, and the guard tubing was cracked. I ordered a complete replacement from CMN. Communication was excellent throughout; they confirmed the 55N series specs and dispatched quickly. The shaft arrived well-packed and fit exactly as described: 1-3\/8″ x 21 tractor spline, 1-1\/2″ x 23 implement. No issues since installation. I like that I can also order the gearbox from them if I ever need it – one supplier for the whole driveline is very convenient.”<\/p>\n

    Roberto Almeida, Cattle Ranch, Brazil<\/strong>
    \n“We operate an MF 1393 for silage production on our beef cattle operation in Mato Grosso do Sul. Getting OEM parts to this region of Brazil is very slow and expensive through the dealer network. CMN shipped this heavy duty PTO shaft directly to our farm address, and it arrived in 14 days, much faster than I expected. The shaft quality is clearly good: the forged yokes are heavy and precise, and the CV joints move smoothly through the full angle range. We have been running it in brachiaria grass silage production for about 400 hours now with no issues at all. Will definitely order more CMN products for our other equipment.”<\/p>\n

    Carlos Mendez, Beef Cattle, Argentina<\/strong>
    \n“My MF 1316S is a big machine for our operation, and I needed a reliable 1000 rpm PTO shaft that could handle the full 120 HP input in dense fescue and tall fescue hay crops without overheating the CV joints. CMN’s CAT 6 double CV was exactly what was needed. The shaft runs at 1000 RPM throughout the full cutting day with no issues. I checked the CV joints after the first season – bearings are still tight, seals intact, no play anywhere. Compared to what I paid for a Bondioli unit two years ago, CMN was about 35% less expensive with equal or better quality. The pre-sale support also helped me confirm the correct PTO shaft sizes for the 1316S application before placing the order.”<\/p>","protected":false},"excerpt":{"rendered":"

    Searching for a direct-fit, heavy-duty PTO shaft for Massey Ferguson discbine models 1359, 1373, 1376, 1393, and 1316S disc mowers? CMN Transmission’s CAT 6 Double Constant Velocity PTO drive shaft is engineered as a precision replacement for the OEM 55N Weasler unit, featuring an 80-degree CV joint on the tractor side and a 50-degree CV on the implement side for smooth, vibration-free power transfer at both 540 and 1000 RPM. Fitted with a 1-3\/8″ x 21-spline tractor yoke and a 1-1\/2″ x 23-spline implement yoke, this agricultural PTO driveline shaft delivers an exact-fit solution for hay and forage operations.<\/p>","protected":false},"featured_media":6986,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[222,262],"product_tag":[232,228,242,234,264,233,226,229,263,265,235,243,225,230,231,224],"class_list":{"0":"post-7048","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-pto-shafts","7":"product_cat-pto-shaft-for-discbine","8":"product_tag-1000-pto-shaft","9":"product_tag-540-pto-shaft","10":"product_tag-agricultural-pto-shaft","11":"product_tag-custom-pto-shaft","12":"product_tag-disc-mower-pto-shaft","13":"product_tag-heavy-duty-pto-shaft","14":"product_tag-pto-drive-shafts","15":"product_tag-pto-driveline-shaft","16":"product_tag-pto-shaft-for-disc-mower","17":"product_tag-pto-shaft-for-discbine","18":"product_tag-pto-shaft-for-tractor","19":"product_tag-pto-shaft-manufacturers","20":"product_tag-pto-shafts","21":"product_tag-pto-shafts-for-sale","22":"product_tag-tractor-pto-drive-shaft","23":"product_tag-tractor-pto-shaft","25":"first","26":"instock","27":"shipping-taxable","28":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/hi\/wp-json\/wp\/v2\/product\/7048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/hi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/korea-transmission.com\/hi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/hi\/wp-json\/wp\/v2\/comments?post=7048"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/hi\/wp-json\/wp\/v2\/media\/6986"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/hi\/wp-json\/wp\/v2\/media?parent=7048"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/korea-transmission.com\/hi\/wp-json\/wp\/v2\/product_brand?post=7048"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/korea-transmission.com\/hi\/wp-json\/wp\/v2\/product_cat?post=7048"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/hi\/wp-json\/wp\/v2\/product_tag?post=7048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}