PTO传动轴滑动离合器轴 – 适用于Hesston 1340和CaseIH圆盘式割草机的圆盘式割草机替换件

SEO Title (≈64 chars): Slip Clutch PTO Driveline Shaft | Hesston 1340 & CaseIH Discbine Replacement

Product Overview

This replacement PTO driveline shaft is purpose-built to restore full power transmission on Hesston 1340, 1345, select CaseIH 8312, Massey Ferguson PTD 12, and New Idea 5512 disc mowers. It directly replaces Weasler’s 55N configuration — 80° CV on the tractor end, 50° CV on the implement end — with no modification required.

The integrated slip clutch disengages the drivetrain the moment torque exceeds a safe threshold, then automatically re-engages once the obstruction clears. This single feature eliminates the most common cause of gearbox and PTO stub damage in high-speed disc mowing: sudden contact with rocks, stumps, or soil ridges.

Both ends carry a 1-3/8″ 6-spline interface — the industry-standard fit for tractor PTOs running at 540 RPM. Input shafts are 1.50″ round on the discbine side, matching OEM geometry. If you need a pto driveline shaft that installs in under 20 minutes and performs like original equipment, this is the direct answer.

As a dependable agricultural driveline component, this shaft is manufactured from high-strength steel throughout, with precision-machined yokes and a sealed slip-clutch pack that resists moisture and field contamination.

Part Number & Specifications

Order the complete assembly (14656849) for full-line replacement, or source individual halves (82- / 83- prefix) when only one end of your existing agricultural driveline needs attention.

Component Diagram

Benefits of PTO Driveline Shafts in Heavy Machinery

A PTO driveline is the mechanical backbone of any tractor-implement pairing. Without a correctly rated shaft, every horsepower your engine produces is wasted — or worse, destructive. Here is what a properly specified agricultural driveline actually delivers on the job:

• Direct torque transfer at rated RPM: At 540 RPM, disc mowers and discbines require uninterrupted rotational force. A matched driveline shaft maintains consistent blade speed across uneven terrain, reducing cut-height variation by eliminating driveline windup.
• Shock-load absorption: CV joints — especially wide-angle 80° designs — smooth out the angular velocity fluctuation that occurs when a tractor turns tight headland corners, reducing vibration that would otherwise fatigue gearbox bearings in under a season.
• Overload protection via slip clutch: When a disc strikes a hidden rock or soil mound, the clutch pack slips at a preset torque value instead of shearing the PTO stub or breaking an implement gearbox shaft — repairs that routinely exceed $800–$2,000 in parts alone.
• Operator safety: A rotating driveline without a properly fitted shield is a documented entanglement hazard. Full-length plastic shielding and a retention chain are standard on this assembly, satisfying OSHA PTO guarding requirements.
• Extended component life: Correctly sized shafts running at their design torque rating show up to 3× longer service life compared to undersized replacements subjected to constant over-loading.

Benefits of CE Certified PTO Driveline Shafts

CE certification on a PTO driveline shaft is not a marketing badge — it is a documented confirmation that the assembly has been evaluated against EU Machinery Directive 2006/42/EC. For B2B buyers and equipment dealers sourcing replacement PTO drivelines, this matters for three concrete reasons:

• Verified torque and material standards: CE-assessed shafts confirm that universal joint steel (20CrMnTi carburized grade), tube wall thickness (Q345 specification), and clutch friction surfaces all meet defined load ratings — values you can reference when matching HP to implement demands.
• Guard design compliance: CE evaluation includes assessment of the plastic shield geometry and retention method, ensuring the guard cannot be removed without tools and provides complete rotational coverage — the leading cause of PTO-related injuries on non-compliant products.
• Liability protection for dealers and fleet operators: Supplying CE-marked driveline components provides a documented chain of conformity, reducing exposure when equipment is used commercially or resold in regulated markets.
• Consistent manufacturing quality: CE audits require production consistency. A shaft carrying the mark has gone through dimensional control checkpoints that non-certified equivalents routinely skip, which translates directly to spline fit accuracy and field reliability.

Features of This Heavy-Duty PTO Driveline Shaft

How to Conduct a Visual Inspection on Your PTO Driveline

Inspect your PTO driveline every time you connect or disconnect it from the tractor. A 3-minute pre-operation check prevents the vast majority of in-field failures. Follow this sequence with the PTO disengaged and the engine off, keys removed:

1. Check the safety shield first. Confirm the plastic guard is fully seated, retaining chain is secured to a stationary point, and there are no cracks, missing sections, or holes that expose the rotating shaft. A damaged shield must be replaced before operation.
2. Examine both CV joints. Rotate the shaft by hand through its full angular range. Any roughness, catching, or grinding indicates bearing wear inside the constant-velocity joint. Smooth rotation in both directions is required.
3. Inspect spline engagement. With the shaft connected, push and pull axially. More than 3 mm of free play on the 1-3/8″ spline end suggests spline wear — a common failure point on shafts that have been run misaligned.
4. Check the slip clutch adjustment. Verify that the friction disc stack is not loose or glazed. A clutch that slips under normal load (not just overload) will rob torque and reduce mower output; re-torque or replace friction discs as needed.
5. Inspect the telescoping section. Slide the inner and outer tubes together. Movement should be smooth with grease visible in the channel. Dry, corroded, or seized telescoping members cause binding and create dangerous side loads on both the tractor PTO and implement input shaft.
6. Lubricate as required. Grease CV joints, the telescoping section, and universal joint cross-kits at intervals specified by the manufacturer — typically every 8–10 operating hours under normal disc mowing conditions.

Note: Three of the most common causes of agricultural driveline failure are insufficient lubrication, operating beyond the rated angular range, and running without the safety shield in place. Address all three on every pre-season check.

Applications of PTO Driveline in Agricultural Machinery

While this specific assembly is configured for disc mower applications, the PTO driveline platform it belongs to powers a broad range of tractor-driven implements across mixed farming operations:

• Disc Mowers & Discbines: The primary application for this shaft. High-speed blade rotation demands a wide-angle CV design that maintains constant velocity through the lateral offset of pull-type hitches — exactly what the 80°/50° double CV geometry provides.
• Rotary Tillers: Deep cultivation creates sudden resistance spikes when blades hit root masses or compacted soil layers. Slip-clutch protected pto driveline shafts in the 540 RPM range are standard equipment on mid-frame tillers (50–80 HP).
• Round & Square Balers: PTO-driven balers require shafts that tolerate high inertia loads at the start of each cycle. A correctly rated agricultural driveline prevents shock damage to flywheel and gearbox components.
• Fertilizer Spreaders: Spreader gearboxes are sensitive to over-speed; slip clutch protection prevents runaway if a blockage clears suddenly under load.
• Water Pumps: Irrigation pump drives require stable, vibration-free power input. CV joints suppress the harmonic vibration that shortens pump seal and bearing life on long-run irrigation cycles.
• Auger & Grain Handling Equipment: Grain augers and conveyor drives benefit from telescoping shaft designs that accommodate vertical height adjustments without uncoupling from the tractor.
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常见问题解答

Commonly Paired Implements & Equipment

This PTO driveline shaft is optimized for disc mower applications, but the same driveline platform is widely used alongside the following equipment in mixed hay and forage operations: