Premium 42CrMo Steel WSP Telescopic Universal Joints

High-Precision Retractable Cross Shaft Universal Couplings Engineered to German Benchmarks

Apex Coupling’s upgraded WSP Series Telescopic Universal Joints are crafted from high-grade 42CrMo alloy steel with precision-ground cross yokes and bearing steel pins (hardened to HRC 55–60). Built for demanding B2B drive lines requiring adjustable axial stroke distance, this series delivers minimal rotational backlash, dynamic fatigue resistance, and extended service life—performing up to 5 times longer than standard market alternatives.

• Main Material: Premium Forged 42CrMo Alloy Steel Hubs & Yokes

• Pin & Joint Hardness: Bearing Steel Pins HRC 55–60; Joint Body HRC 48–52 (Anti-dislodgement design)

• Structure & Speed Capability:

  • Pin & Block Type: Up to 1,000 RPM continuous speed

  • Needle Bearing Type: Up to 4,000 RPM high-speed rotation

• Max Angular Offset: Up to 45° per section

• Finish & Protection: Black Oxide Surface Treatment | Optional Rubber Dust Boot Protection

• Bore Tolerances: H7 Machined Precision (Keyway, Hexagonal, Square, Splined Bores available)

• MOQ: 1 Set (Fast sampling & OEM non-standard custom lengths available)

2. Key Features & Industrial Advantages

Why Choose Apex Upgraded 42CrMo WSP Telescopic Universal Joints?

1. Upgraded 42CrMo Alloy Steel Construction: Superior fatigue strength and fracture resistance compared to standard carbon steels, specifically designed for severe torque and impact loads.

2. German-Standard Heat Treatment & Anti-Pin Dislodgement: Pins are vacuum heat-treated to HRC 55–60 and riveted into HRC 48–52 joint bodies, ensuring the cross pin never looses or drops out during high-speed rotation.

3. Dual Speed & Bearing Options: Choose cost-effective pin-and-block designs for drives under 1,000 RPM, or precision needle bearing assemblies for smooth operation up to 4,000 RPM.

4. Ultra-Low Backlash Precision Grinding: Precision ground joints eliminate rotational play, reducing mechanical vibration and providing a service life up to 5 times longer than standard couplings.

5. Optional Protective Dust Boots: Heavy-duty rubber dust covers keep contaminants, chips, and grit away from internal bearings while retaining internal grease lubrication.

3. Technical Specifications & Stroke Calculation

Technical Parameters & Stroke Calculation Formula

Available Standard Models

• Light to Medium Models: WSP-03GA, WSP-04GA, WSP-05GA, WSP-1GA, WSP-2GA, WSP-3GA, WSP-4GA

• Heavy-Duty Models: WSP-5GA, WSP-6GA, WSP-7GA, WSP-8GA, WSP-9GA, WSP-10GA, WSP-11GA

4. Target Industrial Applications

Recommended Applications for 42CrMo Telescopic Joints

Apex 42CrMo telescopic universal joints are heavily specified across demanding automation and machinery sectors:

• High-Speed Automation Lines & Packaging Equipment

• Agricultural PTO Drive Lines & Construction Machinery

• CNC Machine Tool Drives & Multi-Spindle Drilling Heads

• Textile Machinery & Printing Press Transmission Systems

• Extreme Temperature & Dust-Exposed Heavy Machinery Drives

5. B2B Inquiry Form

Request Factory Direct Pricing for 42CrMo WSP Joints

Looking for reliable B2B supply, OEM private labeling, or non-standard custom lengths for WSP telescopic universal joints? Submit your technical details below for immediate engineering support.

• Contact Name & Company Name:

• Corporate Email Address:

• Target WSP Model / Shaft Bore Diameter (d1 / d2):

• Speed Requirement (under 1000 RPM / up to 4000 RPM Needle Bearing):

• Working Condition Features (Dust Boot required / High Torque / Special Stroke):

• Estimated Order Quantity (Sets):

• Upload Shaft CAD Drawing: