71912 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71912 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 71912 CDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with ceramic balls and manufactured to P4A super precision tolerance, this bearing delivers superior high-speed capability and rigidity. Its 15° contact angle is optimized for handling combined loads, making it an ideal solution for high-reliability, high-rotation accuracy systems where minimal runout and thermal stability are critical.
71912 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| 71912 | Basic bearing series and size code (60mm bore, 85mm OD, 13mm width) |
| C | 15° nominal contact angle |
| DG | Universal Matchable (SU) bearing in a duplex pair |
| A | Extra light preload class |
| HCP4A | P4A tolerance class with phenolic cage and ceramic balls |
71912 CDGA/HCP4A Bearing Structural Features & Performance Benefits
Enhanced High-Speed Performance: The combination of ceramic balls and a lightweight phenolic cage significantly reduces centrifugal forces, enabling stable operation at the high limiting speed of 31,000 rpm. This material combination also provides superior resistance to thermal expansion.
Exceptional Rigidity and Accuracy: Manufactured to P4A super precision tolerances with extremely tight dimensional control on bore, outside diameter, and width. This ensures minimal runout and vibration, crucial for applications demanding high rotational accuracy.
Optimized for Preload and Matching: Designed as a Universal Matchable (SU) bearing, it can be mounted in pairs (back-to-back, face-to-face, or tandem) to create a preloaded set without the need for selective assembly, simplifying installation and ensuring consistent performance.
Superior Load Capacity: The 15° contact angle effectively handles combined radial and axial loads. The use of ceramic balls increases the dynamic load rating, contributing to a longer operational life under demanding conditions.
71912 CDGA/HCP4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles: For milling, grinding, and drilling centers requiring high precision and speed.
- Precision Robotics: In robot arm joints and gears where high rigidity and accuracy are paramount.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring reliable high-speed operation.
- High-Frequency Motors and Spindles: Especially in applications where reduced friction and heat generation are critical.
