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Precision Miniature Universal Joint Couplings | CPKCA & CPKCW Detachable 42CrMo Alloy Steel Universal Joints
Model Number
Check below, custom
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
High-Precision & Low-Backlash Motion Transmission: CPKCA & CPKCW Detachable Miniature Universal Joints
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The Apexcoupling CPKCA & CPKCW Series Detachable Precision Universal Joint Couplings are engineered for high-accuracy angular power transmission in compact industrial machinery, CNC tooling, automated packaging, medical equipment, and semiconductor processing lines. Manufactured from premium 42CrMo alloy steel (and high-wear bearing steel components) with an advanced chemical black oxide surface treatment, these miniature universal joints deliver exceptional hardness, wear resistance, and smooth torque transfer across intersecting shaft angles.
Featuring precision-honed H7 inner bores processed on imported multi-axis machining centers, CPKCA (single joint) and CPKCW (double joint) models maintain ultra-tight internal tolerances to minimize rotational play and high-speed running noise. Their modular, detachable structural design allows straightforward disassembly, quick pin/block inspection, and effortless maintenance in tight mechanical assemblies.
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Core Product Advantages & Features
42CrMo Alloy Steel & Bearing Steel Construction: Drop-forged and precision-machined from high-grade alloy steel to provide high surface hardness, uniform toughness, and anti-galling performance.
Precision Honed H7 Inner Bore Tolerance: Internal bores are precision-ground and honed to H7 standards, ensuring low backlash, minimal vibration, and low operational noise at high speeds.
Large Angular Compensation Capacity: Efficiently transmits smooth rotational torque and motion between shafts with significant angular misalignment.
Detachable Modular Structure (CPKCA / CPKCW): Simplifies installation and field servicing without requiring complete teardown of connected drive units.
Black Oxide Wear-Resistant Coating: Chemical blackening enhances corrosion resistance, reduces sliding friction, and extends service life in harsh working environments.
Custom Bore Configurations Supported: Standard round bores, keyways, hexagonal (F) holes, square (S) holes, and custom metric/imperial shaft diameters.
Technical Specifications Table
| Engineering Parameter | Technical Value / Specification (CPKCA & CPKCW Series) |
| Product Models | CPKCA Series (Single Joint) / CPKCW Series (Double Joint) |
| Structural Design | Detachable Cross Pin / Block Modular Structure |
| Body & Pin Material | 42CrMo Alloy Steel / High-Hardness Bearing Steel |
| Maximum Inner Bore Diameter | Up to Φ 50 mm (Custom Sizing Supported) |
| Bore Tolerance & Machining | H7 Precision Bore Fit (Honed Finish) |
| Surface Treatment Finish | Chemical Black Oxide Coating (Anti-Rust & Wear Resistance) |
| Custom Hole Types Supported | Round Bore / Keyway / Hexagonal (F) / Square (S) Bores |
| Operating Characteristics | High Angular Compensation, High Efficiency, Low Noise, Low Backlash |
| Target Machinery Uses | CNC Tools, Packaging, Semiconductor, Food Machinery, Railway |
| Model | Minimum Order Quantity (pcs) | Note |
|---|---|---|
| CPKCA‑20 | 5 | – |
| CPKCA‑22 | 5 | – |
| CPKCA‑25 | 5 | – |
| CPKCA‑30 | 5 | – |
| CPKCA‑35 | 5 | – |
| CPKCA‑40 | 5 | – |
| CPKCA‑45 | 5 | – |
| CPKCA‑50 | 5 | – |
| CPKCAW‑08 | 5 | – |
| CPKCAW‑10 | 5 | – |
| CPKCAW‑12 | 5 | – |
| CPKCAW‑14 | 5 | – |
| CPKCAW‑16 | 5 | – |
| CPKCAW‑18 | 5 | – |
| CPKCAW‑20 | 5 | – |
| CPKCAW‑22 | 5 | – |
| CPKCAW‑25 | 5 | – |
| CPKCAW‑30 | 5 | – |
| CPKCAW‑35 | 5 | – |
| CPKCAW‑40 | 5 | – |
| CPKCAW‑45 | 5 | – |
| CPKCAW‑50 | 5 | – |
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CPKCA universal joint
