71912 CD/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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71912 CD/HCP4ADBA Bearing Product Overview & Core Advantages
The 71912 CD/HCP4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex back-to-back (DB) matched set delivers superior high rigidity and can accommodate combined radial and axial loads. Manufactured to P4A tolerance class, it features ceramic balls and a phenolic cage, enabling excellent high-speed performance and stable operation under rigorous conditions. Its compact design and pre-lubrication make it an ideal, reliable component for high-precision machinery.
71912 CD/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71912 | Basic bearing designation, indicating a light series, 60mm bore, 85mm OD angular contact bearing. |
| C | 15° contact angle. |
| D | Duplex (two single bearings). |
| DB | Matched arrangement: Back-to-Back. |
| HC | Hybrid Ceramic: Steel rings with ceramic balls. |
| P4A | High precision tolerance class. |
| A | Extra light preload. |
71912 CD/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide effective spread, significantly increasing system rigidity and moment load capacity. This configuration is optimized to handle combined loads effectively.
- High-Speed Performance: The combination of lightweight phenolic resin cage and low-friction ceramic balls (Silicon Nitride) reduces centrifugal forces and operating temperatures, allowing for a high limiting speed of 36,000 rpm.
- Precision & Longevity: Manufactured to P4A tolerance class with a 15° contact angle, this bearing ensures running accuracy and positional stability. The hybrid ceramic construction offers increased service life, especially in contaminated or marginally lubricated environments.
- Pre-lubricated: The bearing is supplied with grease, simplifying installation and providing immediate operational readiness.
71912 CD/HCP4ADBA Bearing Typical Application Areas
This high-precision, high-speed bearing set is ideally suited for applications where rigidity, accuracy, and rotational speed are critical. Key industries and machinery include:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Advanced Robotics and Automation
- Aerospace Actuation Systems
