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Product Overview
 

Heavy-duty mechanical power transfer components engineered for high-torque rotary transmission in agricultural implements and industrial machinery. Designed for direct OEM replacement and custom integration, our driveline assemblies utilize forged alloy steels and precision-machined splines to handle high shock loads and misalignment between power sources and driven loads. Backed by in-house manufacturing equipped with advanced CNC gear hobbing machines and vertical machining centers, we ensure strict dimensional control from raw stock to final assembly.

 

 
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Key Features & Benefits

Forged Universal Joints

Cross journals hot-forged from 20CrMnTi alloy steel, case-hardened to HRC 58-62 with a case depth of 0.8-1.2 mm to resist torsional fatigue and surface wear under cyclic shock loads.

Telescopic Profile Tubing

Cold-drawn seamless steel tubes (profile options: Triangle, Lemon, Star) designed with optimized wall thickness to minimize torsional wind-up and ensure smooth axial telescoping under load.

Integrated Safety Shielding

High-impact Polypropylene (PP) safety guards rated for UV resistance and sub-zero operation, fully compliant with ISO 5674 and CE safety standards.

Precision Needle Bearings

High-load capacity needle rollers heat-treated for minimal friction coefficient, packed with Lithium-based extreme pressure (EP) grease rated for operating temperatures from -30°C to 120°C.

 

Technical Specifications

 

Parameter

Specification Range

Material / Standard

Max Dynamic Torque

500 Nm – 4,500 Nm

Dependent on series size (Category 1 to 8)

Max Operating Speed

Up to 1,000 RPM

Balanced to ISO 1940 Grade G6.3

Cross Journal Material

20CrMnTi

Case hardened, core strength >= 850 MPa

Tube Material

Q345B / 20# Seamless Steel

Yield strength >= 345 MPa

Spline Configurations

1-3/8" Z6, Z21, 1-3/4" Z20

DIN 9611 / ISO 500 standards

Telescopic Range

800 mm – 2,500 mm (Compressed to Extended)

Custom lengths available upon request

Surface Finish

Black phosphated / Electrostatic powder coating

Salt spray test >= 250 hours

 

Product Types

 

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  • Standard Agricultural PTO Shafts

    Fixed and telescopic configurations matching standard tractor and implement PTO interfaces (Categories 1 through 8).

  • Shear Bolt Torque Limiters

    Mechanical overload protection utilizing shear pins designed to fracture at predetermined torque thresholds.

  • Friction Clutch Drivelines

    Multi-plate friction disc assemblies designed for continuous torque limitation in high-inertia implement applications.

  • Wide-Angle Constant Velocity (CV) Shafts

    Double universal joint design allowing operating angles up to 80° during turns without speed fluctuation.

 

Applications

 

 

Agricultural Machinery

Rotary tillers, flail mowers, round balers, fertilizer spreaders, manure spreaders, and grain augers.

 

Municipal Equipment

Road sweepers, ditch cleaners, and snow blowers.

 

Industrial Drive Systems

Heavy-duty material handling conveyors, industrial mixers, and pump drives.

 

 

Quality Control & Certifications
 

In-House Manufacturing Control

Direct factory production backed by dedicated CNC gear hobbing machines and vertical machining centers to maintain tight tolerances and consistent metallurgy.

Raw Material Testing

Spectrometric chemical composition analysis performed on every incoming batch of steel bars and forgings.

Dimensional Inspection

100% verification of spline tooth pitch, bore diameters, and concentricity using Coordinate Measuring Machines (CMM) and plug gauges.

Hardness & Metallography

Rockwell hardness testing on heat-treated cross kits and microscopic grain structure analysis.

Dynamic Balancing

High-speed dynamic balancing conducted on all assembled shafts exceeding 1,200 mm to eliminate vibration at operating speeds.

Certifications

Manufactured under ISO 9001:2015 quality management system; safety guards certified to CE directives.

 

 
 
OEM & Customization
01.

Custom OEM/ODM Solutions

Direct factory-to-OEM engineering support for custom drivelines tailored to specific machinery footprints.

02.

Engineering Support

Collaborative development using SolidWorks and ANSYS for finite element analysis (FEA) of custom power transfer assemblies.

03.

Custom Parameters

Tailored extended/compressed lengths, specialized yoke configurations (quick-release pins, clamp bolts, push-pin yokes), and non-standard spline counts.

04.

Prototyping & Sampling

Rapid sampling capability with complete material test reports (MTR) and dimensional inspection sheets provided within 15–20 business days.

 

Installation & Compatibility

 

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Interchangeability

Direct drop-in replacement compatibility with major global agricultural machinery brands (e.g., Walterscheid, Bondioli & Pavesi footprints).

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Installation Guidelines

Ensure proper alignment between tractor PTO output and implement input shaft. Verify that telescopic tubes maintain a minimum overlap of 1/3 of their working length during full stroke.

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Lubrication Schedule

Grease cross journals and telescopic profiles every 8 to 50 operating hours using multi-purpose EP-2 grease.

 

Packaging & Shipping
 
 

Packaging Standards

Individual anti-corrosion VCI plastic wrapping, packed in heavy-duty export-grade corrugated boxes or secured on fumigation-free plywood pallets.

 
 
 

Logistics

Flexible shipping terms (FOB, CIF, DDP) via sea freight (LCL/FCL) from major ports or air express for urgent prototype delivery.

 
 
 

Lead Time

Standard production runs ship within 25–35 days from order confirmation.

 

 

 

Frequently Asked Questions

 

Q: What is the maximum operating angle for standard universal joints versus constant velocity (CV) joints?

A: Standard single universal joints are rated for operating angles up to 15° continuous (or 25° intermittent). For turning applications requiring higher articulation, our wide-angle CV joints accommodate operating angles up to 80°.

Q: How do I select the correct PTO shaft category based on tractor horsepower?

A: Selection is determined by torque rather than horsepower alone. For example, Category 4 shafts are typically rated for tractors up to 70 HP (approx. 500 Nm nominal torque at 540 RPM), while Category 8 handles up to 130 HP (900 Nm). Consult our engineering team with your specific tractor power and application load profile for exact sizing.

Q: What torque limiter type should I choose for high-shock applications like rotary cutters?

A: For machinery subject to frequent rock strikes or heavy impact loads, a friction disc clutch is recommended to slip momentarily rather than sheer bolts, reducing equipment downtime. Shear bolt limiters are cost-effective alternatives for applications with infrequent overloads.

Q: Are your safety shields fully interchangeable with European safety standards?

A: Yes. Our Polypropylene (PP) safety guards and bearing cone assemblies comply fully with ISO 5674 and bear the CE mark, ensuring direct field compatibility and compliance with international machinery safety regulations.

Q: What is your standard Minimum Order Quantity (MOQ) for custom OEM driveline configurations?

A: For standard catalog items, trial orders starting at 10 pieces are accepted. For custom-engineered yokes, specialized tubing profiles, or private-label packaging, MOQ typically starts at 50–100 pieces per specification.

Q: What documentation is provided with bulk shipments?

A: Each shipment includes a Material Test Report (MTR), Certificate of Conformance (CoC), Dimensional Inspection Report, and detailed maintenance/lubrication manuals.

 

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Request a Quote

Provide your technical parameters (Torque requirements, working RPM, collapsed length, and end-yoke specifications) to receive a factory-direct quotation and engineering drawings within 24 hours.

Wenzhou Kinee Electrical Co., Ltd. is one of the most professional power transfer manufacturers and suppliers in China, featured by quality products and good price. Please rest assured to buy advanced power transfer made in China here from our factory. We also accept customized orders.

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