WS/WSD Small Universal Joint Coupling – Single/Double, 11.2–1120 N·m, 45° Angle, H7 Bore

Factory direct | Single (WSD) or double (WS) | 11.2–1120 N·m | 45° angle per joint | H7 bore | Sliding or needle bearing | 4000 RPM | Stainless steel / 42CrMo / Aluminum | OEM/ODM

The Apexcoupling WS/WSD series is a precision small universal joint coupling designed for reliable power transmission between two shafts on the same plane with angular misalignment up to 45°. Available in single joint (WSD) and double joint (WS) configurations, this coupling delivers nominal torque from 11.2 to 1120 N·m with high transmission efficiency. Manufactured from stainless steel, 42CrMo alloy steel, or aluminum, it features H7 finished bore tolerance and supports custom hole types including keyway, hexagon, and square holes.

✅ The angle between the two shafts is allowed to change within a limited range according to working needs. Two bearing options: sliding bearing (1000 rpm) or needle bearing (4000 rpm).

Key Technical Specifications

🔧 Custom bores, materials, keyways, hexagon/square holes, and special designs available. Contact us with your specifications.

Product Configurations

💡 Model naming note: WSD is the single type, WS is the double type.

Bearing Options

✅ Needle bearing option features high dynamic load capacity and small bearing clearance – ideal for high-speed precision applications.

Material Options

Product Features & Advantages

Product Structure

1. Two Yokes (Forks) – Precision-machined from stainless steel, 42CrMo, or aluminum.

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

3. Bearing Options – Sliding bearing (1000 rpm) or needle bearing (4000 rpm).

4. Single Joint (WSD) – One pivot point for angular flexibility.

5. Double Joint (WS) – Two pivot points for angular + offset flexibility.

Applications

• Building Material Shops – Material handling, conveyors

• Energy & Mining – Conveyors, feeders, crushers

• Food & Beverage Processing – With stainless steel option for hygienic applications

• Machinery Repair Shops – Replacement and upgrade parts

• Manufacturing Plants – General power transmission

• Packaging Machinery – Conveyors, wrapping machines

• Printing Equipment – Presses, finishing equipment

• CNC Machines – Feed drives, positioning

• Robotics – Joint drives, motion control

Why Choose Apex Coupling for WS/WSD Universal Joints?

FAQ

Q: What is the difference between WS and WSD?
A: WSD is a single universal joint – for angular misalignment only. WS is a double universal joint – allows both angular misalignment and parallel offset, providing smoother motion.

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

Q: What torque range is available?
A: The standard series covers 11.2 – 1120 N·m. Custom higher torque is available on request.

Q: What speed ratings are available?
A: Sliding bearing – up to 1000 rpm. Needle bearing – up to 4000 rpm. Needle bearing offers high dynamic load capacity and small bearing clearance.

Q: What materials are available?
A: We offer stainless steel, 42CrMo alloy steel, and aluminum alloy. Choose based on your environment and load requirements.

Q: What bore types can I get?
A: We offer keyway, hexagon hole, square hole, and plain hole. Custom bore types available on request.

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

Q: Can the angle change during operation?
A: Yes. The angle between the two shafts is allowed to change within a limited range according to working needs.

Q: What is the warranty?
A: 3 Years – quality assured for long-term reliability.

Request a Quote

Send us your configuration (single/double), torque requirement, speed, material preference, bore type, and bearing type. Our engineers will recommend the optimal model and provide a quotation within 24 hours.