High Quality 42CrMo Telescopic Universal Joint Coupling – WSP Retractable Small Cross Shaft Cardan Joint

Apex Coupling manufactures the WSP series telescopic universal joint coupling designed for large shaft spacing, high torque transmission, and flexible angle compensation up to 45°. Made from high-strength 42CrMo alloy steel, this heavy-duty cardan shaft universal joint features a precision-ground structure, bearing steel pins, and anti-detachment joint design to deliver minimal backlash and longer service life.

As a direct factory manufacturer, we support full non-standard customization, including custom bore sizes, keyways, hexagon holes, square holes, and various surface treatments for extreme environments.

Structural Features of WSP Universal Joint Coupling

• Maximum rotation angle: Each section can reach up to 45° for flexible misalignment compensation.
• Telescopic design: Connects greater axis spacing; installation length (L) and stroke (X) are customizable.
• Precision bore: Finished hole tolerance is H7. Keyway, hexagon hole, and square hole are available upon request.
• Heavy-duty pins: Pin shafts are made of bearing steel with hardness HRC 55-60. The joint is designed not to detach, with HRC 48-52 hardness.
• Precision ground design: Minimal backlash, extended service life. 1 set of our precision-ground joint replaces 5 standard sets.
• Dust cover available: Protects the joint from dust and debris, making the coupling more durable in harsh environments.
• High speed & wide temperature: Supports ultra-high speed, high temperature, and low temperature customization.

Technical Specifications

Installation Length & Stroke Calculation

For the WSP telescopic universal joint coupling, the installation length and stroke can be calculated based on your shaft spacing requirements:

• Minimum size: Lmin = L2 + B + X + L2
• Stroke X: Xs = (Lmax – 2·L2 – B) / 2
• Installation length L: L = L2 + B + X + L2

Our engineering team can assist you with the exact calculation based on your specific machinery layout.

Surface Treatment Options for Extreme Environments

To meet different anti-rust and corrosion resistance requirements, we offer multiple surface treatments:

• Blackening / Phosphating
• Nickel Plating
• Galvanizing
• Chrome Plating
• Dacromet
• Zinc-Nickel Alloy (High-efficiency anti-rust)

For high-temperature, low-temperature, or ultra-high-speed applications, please specify your working conditions so we can recommend the optimal surface treatment and lubrication.

Applications of WSP Telescopic Universal Joint Coupling

• Industrial machinery and manufacturing plants
• Food & beverage factory equipment
• Agricultural machinery and farms
• Printing and packaging machinery
• Construction works and mining equipment
• Energy and power transmission systems
• Retail and commercial machinery

Why Choose Apex Coupling as Your Universal Joint Manufacturer?

• Source factory: Direct manufacturer in Dongguan, Guangdong, offering competitive factory prices.
• Premium materials: 42CrMo alloy steel body and bearing steel pins for maximum durability.
• Precision manufacturing: H7 bore tolerance, precision grinding, and strict quality control (ISO9001).
• Full customization: Non-standard sizes, special bores (keyway, hexagon, square), and custom surface treatments.
• Fast delivery: MOQ 1 piece, carton + wooden box packaging for safe global shipping.
• 1-year warranty: Reliable after-sales support and engineering assistance.

FAQ – Telescopic Universal Joint Coupling

1. What is the maximum angle of this universal joint coupling?

Each section of the WSP universal joint coupling can achieve a maximum rotation angle of 45°.

2. Can you customize the bore size and keyway?

Yes. The finished bore tolerance is H7. We can open keyways, hexagon holes, or square holes according to your drawings. Custom bore diameters are also available.

3. What is the difference between your precision-ground joint and standard joints?

Our precision-ground design offers minimal backlash and longer service life. In fact, 1 set of our precision-ground universal joint can replace up to 5 sets of standard joints.

4. Do you provide dust covers for the universal joint?

Yes. We can add a dust cover to protect the joint from dust and debris, significantly improving durability in harsh working environments.

5. How do I calculate the installation length and stroke?

You can use the formula: Lmin = L2 + B + X + L2. However, we recommend sending us your shaft spacing and application details. Our engineers will calculate the exact L and X dimensions for you.

6. What surface treatments are available for anti-rust protection?

We offer blackening, phosphating, nickel plating, galvanizing, chrome plating, Dacromet, and zinc-nickel alloy. Zinc-nickel alloy offers high-efficiency anti-rust protection for extreme environments.

Request a Quote for WSP Telescopic Universal Joint Coupling

Need a reliable 42CrMo universal joint coupling for your machinery? Send us your bore size, torque, speed, and stroke requirements. Our engineering team will recommend the right WSP model and provide a fast quotation.

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Looking for a double diaphragm shaft coupling instead? Click here to view our high-precision diaphragm couplings.