71900 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71900 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71900 CD/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in pairs, it enables optimal preload configuration for maximum system rigidity. Its P4A tolerance class ensures superior running accuracy, while the phenolic cage and optimized 15° contact angle deliver outstanding high-speed capability and precise axial positioning under combined loads.
71900 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71900 | Super-precision angular contact bearing series with 10mm bore diameter |
| CD | 15° contact angle design for optimal speed and load capacity balance |
| P4A | High-precision tolerance class with enhanced dimensional stability |
| DGA | Universal matchable (SU) designation for paired mounting |
71900 CD/P4ADGA Bearing Structural Features & Performance Benefits
High-Speed Performance: The phenolic resin cage and optimized 15° contact angle enable exceptional rotational speeds up to 165,000 rpm, making it ideal for high-speed spindle applications.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring superior running accuracy and minimal vibration.
Universal Matching Capability: As a universal matchable (SU) bearing supplied in pairs, it allows flexible mounting arrangements and precise preload control for optimal system stiffness.
Enhanced Load Capacity: With 12 precision balls of 3.175mm diameter, the bearing delivers radial dynamic load rating of 922 lbf and static load rating of 495 lbf, capable of handling combined radial and axial loads efficiently.
71900 CD/P4ADGA Bearing Typical Application Areas
- High-speed machine tool spindles for precision machining centers
- Precision grinding machine spindles requiring exceptional running accuracy
- High-frequency motor spindles in semiconductor manufacturing equipment
- Aerospace gyroscopes and instrumentation demanding ultra-precision rotation
- Medical device rotating assemblies where reliability and precision are critical
