71912 CDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71912 CDGC/P4A Bearing Product Overview & Core Advantages
The 71912 CDGC/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running precision. Its 15° contact angle is optimized to support significant combined loads, handling both radial and axial forces simultaneously. The phenolic resin cage and pre-lubrication contribute to smooth, high-speed operation, making it an ideal choice for high-performance spindles and precision machinery where reliability is critical.
71912 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
| 71912 | Bearing series and size designation |
| CD | High contact angle (15°) design |
| GC | Moderate preload (Class C) |
| P4A | High precision tolerance class |
71912 CDGC/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A tolerance standards with strict dimensional control (bore tolerance: -0.004mm to 0), ensuring minimal runout and vibration for precision applications.
Optimized Load Capacity: The 15° contact angle provides excellent performance under combined radial and axial loads, with dynamic load rating of 4478 lbf and static load rating of 3442 lbf.
High-Speed Capability: The phenolic resin cage offers superior strength-to-weight ratio, enabling high-speed operation up to 31,000 rpm while maintaining dimensional stability.
Universal Matching: Designed as Universal Matchable (SU), allowing precise bearing arrangements in sets of three for optimal preload and stiffness control.
71912 CDGC/P4A Bearing Typical Application Areas
The 71912 CDGC/P4A is ideally suited for:
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Instrumentation - Measuring equipment and optical devices
- High-Speed Motors - Servo motors and spindle drives
- Aerospace Components - Gyroscopes and navigation systems
- Medical Equipment - Dental handpieces and surgical tools
