WSP Telescopic Universal Joint Coupling – 45° Angle, H7 Bore, 25-6300 N·m for Variable Shaft Spacing

Factory Direct | 40Cr Alloy Steel | 45° Angle Per Joint | H7 Bore | 25-6300 N·m Torque | Sliding (1000 RPM) or Needle Bearing (4000 RPM) | Telescopic Spline Design | Keyway/Hex/Square Bore Options | JB/T5901-1991 | OEM Customizable

The Apexcoupling WSP series is a high-precision telescopic universal joint coupling engineered for applications requiring both angular misalignment compensation and axial length adjustment. Featuring a telescopic spline shaft design that allows the overall length to be easily adjusted, this coupling solves both distance and angular offset problems between the drive end and the driven load. Manufactured from 40Cr alloy steel with optional 304/316 stainless steel, the WSP series delivers high strength, excellent wear resistance, and long service life. Available with sliding bearing (up to 1000 RPM) or needle roller bearing (up to 4000 RPM), this coupling offers flexibility for a wide range of industrial applications. With 45° maximum angular displacement per section and H7 finished bore tolerance, the WSP series is the ideal solution for packaging machinery, woodworking equipment, multi-spindle drills, metallurgical machinery, printing presses, and general automation.

✅ Telescopic spline design – adjusts length without disassembly. 45° angle per joint – accommodates significant misalignment. H7 precision bore – accurate shaft fit. Sliding (1000 RPM) or needle bearing (4000 RPM). 40Cr alloy steel – high strength and durability. JB/T5901-1991 standard. OEM custom lengths and bores available.

Key Technical Specifications

🔧 Custom lengths, bores, keyways, hexagon/square holes, and special materials (304/316 stainless steel) available. Contact us with your specifications.

WSP Series – Model Range & Specifications

📐 Lmin/Lmax dimensions available upon request. Contact our engineering team for custom sizing.

Bearing Selection – Sliding vs Needle Roller

⚠️ Note: It is recommended to use the coupling at ≤50% of the maximum rated speed for optimal service life.

Product Structure

1. Two Yokes (Forks) – Precision-machined from 40Cr alloy steel with H7 bores.

2. Cross Shaft (Cross Axis) – The central component that transmits torque.

3. Telescopic Spline Shaft – Allows axial length adjustment (travel S).

4. Center Slider – Quenched 45-50 HRC for wear resistance.

5. Pins – Carburized 45-50 HRC for durability.

6. Bearing Options – Sliding bearing (1000 RPM) or needle roller bearing (4000 RPM).

💡 How it works: The WSP telescopic universal joint consists of two yokes connected by a cross shaft, with a telescopic spline shaft between them that allows axial length adjustment. The telescopic design makes repositioning simpler and faster than double universal joints. In cases of axial misalignment, the length can be easily adjusted without disassembling the shaft assembly, significantly reducing maintenance downtime and improving operational efficiency. The center slider and pins are hardened for wear resistance, ensuring smooth, jam-free rotation with low noise. The angle between the two shafts is allowed to change within a limited range (up to 45° per joint) according to working needs.

Product Features & Advantages

Applications

• Packaging Machinery – Conveyors, wrapping machines, carton sealers

• Woodworking Machinery – Multi-spindle drills, routers, saws

• Multi-Spindle Drills – Precision drilling operations

• Metallurgical Equipment – Rolling mills, continuous casting lines

• Printing Machinery – Register control, high-speed operation

• Paper Machinery – Paper production and finishing

• Test Benches – Precision power transmission testing

• Conveyors – Material handling systems

• Pump Equipment – Water and industrial pumps

• General Automation – Pick-and-place systems, indexing tables

Why Choose Apex Coupling for WSP Telescopic Universal Joints?

FAQ

Q: What is the difference between sliding bearing and needle bearing versions?
A: Sliding bearing – max speed 1000 RPM, higher torque capacity, requires lubrication. Needle bearing – max speed 4000 RPM, lower friction, maintenance-free.

Q: What is the maximum operating angle?
A: Each joint can operate up to 45° limit angle. For continuous operation, we recommend ≤30°.

Q: What is the telescopic design?
A: The telescopic spline shaft allows the overall length to be easily adjusted, compensating for axial displacement without disassembly.

Q: What is the formula for calculating length and stroke?
A: Xs = (Lmax – 2·L2 – B) / 2. Lmin = L2 + B + X + L2.

Q: What materials are available?
A: Standard is 40Cr alloy steel. We also offer 45#, 35CrMo, 304 and 316 stainless steel.

Q: What is the bore tolerance?
A: Standard finished bore tolerance is H7 for precision shaft fit.

Q: What bore types are available?
A: We offer keyway, hexagon hole, square hole, and spline hole.

Q: What are the common applications?
A: Packaging machinery, woodworking equipment, multi-spindle drills, metallurgy, printing, conveyors, and general automation.

Q: What is the recommended operating speed?
A: It is recommended to use the coupling at ≤50% of the maximum rated speed for optimal service life.

Q: Can I get a custom coupling?
A: Yes. We offer OEM customization – custom lengths, bores, keyways, materials, and finishes available.

Request a Quote

Send us your model (e.g., WSP-4GA), bore size, length, travel, bearing type, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.