PRODUCTS
CONTACT US
WJ / WJS Precision Ball-Socket Universal Joint Couplings | 42CrMo Alloy Steel Single & Double Universal Joints
Model Number
Check below, custom
WJ1
WJ2
WJ3
WJ4
WJ5
WJ6
WJ7
WJ8
WJ9
WJ10
WJ11
WJ12
WJ13
WJ14
WJS1
WJS2
WJS3
WJS4
WJS5
WJS6
WJS7
WJS8
WJS9
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
High-Precision Angular Transmission: WJ / WJS Series Ball-Socket Universal Joint Couplings
The Apexcoupling WJ (Single Ball-Socket) and WJS (Double Ball-Socket) Series Universal Joint Couplings are compact, high-precision drive components designed for small-to-mediumtorque power transmission across industrial machinery, CNC tools, packaging systems, andautomation lines. Engineered according to Chinese National Standards (GB), these universaljoints replace traditional cross-spiders with a precision spherical ball-socket joint core, delivering smooth angular rotation, low rotational backlash, flexible articulation, and easy maintenance in space-restricted machinery.
Forged from premium 42CrMo alloy steel / high-grade bearing steel and finished with aprotective chemical black oxide surface treatment, the WJ and WJS series deliver superiorhardness, wear resistance, and long service life. Supporting shaft operating angles up to β≤ 40° with synchronized driving and driven rotation, alljoint bores are precision-ground to strict H7 limits to guarantee minimal dynamic play, high concentricity, and low operational noise at high rotational speeds.
Core Product Advantages & Features
42CrMo Alloy Steel Construction: Premium alloy steel hubs and bearing-grade spherical joints provide high surface hardness, uniform strength, and high wear resistance under continuous articulation.
Spherical Ball-Socket Joint Design: Replaces conventional cross-pins with a spherical joint core for compact external dimensions, lightweight construction, and smooth rotational movement.
Single (WJ) & Double (WJS) Articulation Options:
WJ Series (Single Ball-Socket): Designed for single-angular offsets up to 40° in tight mechanical footprints.
WJS Series (Double Ball-Socket): Features dual spherical joints to accommodate larger parallel misalignments and combined angular shaft offsets.
Precision Ground H7 Inner Bores: Honed and ground internal bore surfaces eliminate rotational backlash, ensuring low noise and steady torque transfer.
Chemical Black Oxide Surface Treatment: Enhances surface hardness and abrasion resistance, reducing frictional wear against adjacent machine parts.
Wide Industrial Application Range: Suitable for CNC machine tools, packaging machinery, woodworking equipment, semiconductor drives, printing presses, and railway control systems.
Technical Specifications Table
| Engineering Parameter | Technical Value / Specification (WJ / WJS Series) |
| Product Series | WJ Type (Single Ball-Socket) / WJS Type (Double Ball-Socket) |
| Executive Standard | GB (Chinese National Standard) |
| Body & Joint Material | 42CrMo High-Grade Alloy Steel / Bearing Steel |
| Inner Bore Precision | H7 Class Fit (Precision Ground Bores) |
| Maximum Operating Angle | β≤40° (Max Angular Misalignment) |
| Surface Treatment Finish | Chemical Black Oxide Coating (Wear-Resistant) |
| Rotational Characteristics | Synchronous Rotation, Low Backlash, Low Noise |
| Target Equipment Fits | CNC Machinery, Packaging Equipment, Semiconductors, Printing |
WJ single universal joint, WJS double universal joint, ball socket universal joint, 42CrMo alloy steel U-joint, miniature torque joint, precision universal coupling, GB standard universal joint.
Product Show
ball socket universal joint
