71912 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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71912 CD/HCP4A Bearing Product Overview & Core Advantages
The 71912 CD/HCP4A is a single-row angular contact ball bearing engineered for applications demanding exceptional precision and high-speed performance. This precision bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, while also supporting significant radial loads. Its compact design, featuring a 15° contact angle, provides high rigidity and operational accuracy, making it ideal for high-reliability, high-rotation applications. The bearing is preloaded and comes pre-lubricated for immediate use.
71912 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71912 | Basic bearing series and size designation (60mm bore, 85mm OD, 13mm width). |
| C | Specifies a 15° contact angle. |
| D | Indicates the bearing is manufactured with a high preload. |
| HC | Signifies the use of Hybrid Ceramic components (Ceramic balls with a steel ring). |
| P4 | Denotes an ultra-high precision tolerance class (ABEC-7 / ISO P4). |
| A | Indicates the bearing is supplied with an ABEC-7 tolerance class. |
71912 CD/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & High-Rigidity Performance: The combination of a phenolic resin cage and ceramic balls significantly reduces centrifugal forces and friction, enabling a very high limiting speed of 28,000 rpm. The 15° contact angle and preload provide superior axial and radial stiffness, minimizing deflection under load for enhanced positional accuracy.
Advanced Hybrid Ceramic Design: The use of ceramic balls offers key advantages including reduced weight, lower thermal expansion, electrical insulation, and superior performance in high-speed and high-temperature environments compared to all-steel designs.
Ultra-Precision & Reliability: Manufactured to P4 (ABEC-7) tolerance standards, this bearing ensures minimal runout and vibration, which is critical for the smooth operation of precision machinery. The open seal type allows for optimal lubrication management in controlled environments.
71912 CD/HCP4A Bearing Typical Application Areas
This high-precision, high-speed angular contact bearing is ideally suited for demanding applications, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Robotics (Articulated arm joints, high-accuracy actuators)
- Aerospace & Defense Systems (Gyroscopes, radar systems, flight control mechanisms)
- High-Frequency Motors and Spindles
