71906 CEGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71906 CEGC/P4A Bearing Product Overview & Core Advantages
The 71906 CEGC/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and moderate preload. Operating under the P4A tolerance class, this metric bearing delivers exceptional dimensional accuracy and rotational stability. Its optimized 15° contact angle enables efficient handling of combined radial and axial loads, making it ideal for high-speed spindles and precision machinery where rigidity and running accuracy are critical. The phenolic cage and universal matching capability further enhance its performance in demanding industrial environments.
Model Code Breakdown
| Code Segment | Technical Meaning | Performance Implication |
|---|---|---|
| 71906 | High-precision angular contact bearing series with 30mm bore | Indicates specialized design for precision applications |
| CE | Contact angle of 15° | Optimized for combined radial and axial load capacity |
| GC | Moderate preload (Class C) | Provides consistent running accuracy and reduced deflection |
| P4A | High precision tolerance class | Ensures superior dimensional and running accuracy |
71906 CEGC/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and minimal runout.
Optimized Load Capacity: The 15° contact angle configuration provides balanced performance for both radial loads (1258 lbf dynamic) and axial loads, making it suitable for combined loading applications.
High-Speed Capability: With a limiting speed of 100,500 rpm and phenolic cage construction, this bearing maintains stability at high rotational speeds while reducing friction and heat generation.
Universal Matching Design: As a Universal Matchable (SU) bearing supplied in sets of 2, it enables precise preload control and simplified mounting in paired arrangements.
Material Excellence: Chrome steel rings and balls combined with phenolic cage material provide excellent durability and thermal stability within the operating temperature range of -30°C to 110°C.
71906 CEGC/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional running accuracy
- High-Speed Motors: Electric motor applications demanding stable performance at elevated rotational speeds
- Precision Instrumentation: Measuring equipment and optical instruments where minimal vibration is critical
- Robotic Systems: Industrial robot joints and servo mechanisms requiring precise motion control
- Aerospace Components: Auxiliary systems and instrumentation requiring reliable high-speed operation
