71922 ACEGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71922 ACEGA/HCP4AL Bearing Product Overview & Core Advantages
The 71922 ACEGA/HCP4AL 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 class, this bearing delivers superior speed capability, reduced friction, and extended service life. Its 25° contact angle is optimized to handle significant combined loads, including high radial and one-directional axial loads simultaneously. The phenolic cage and pre-lubrication contribute to its reliable operation in high-speed environments, making it an ideal solution for ultra-precision spindles and other critical machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 20mm width) |
| AC | Angular Contact design with a 25° contact angle |
| EGA | Universal Matchable (SU) bearing in a set of 4, with Extra light preload (Class A) |
| HC | Hybrid Ceramic construction featuring silicon nitride (Si3N4) balls |
| P4A | Super precision tolerance class, superior to ABEC 7/ISO P4 |
71922 ACEGA/HCP4AL Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This construction enables higher limiting speeds (10,000 rpm) and provides electrical insulation properties.
- Precision Engineering: Manufactured to P4A tolerance class with extremely tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for superior rotational accuracy.
- Optimized Cage Design: The phenolic resin cage offers excellent strength-to-weight ratio, reduced centrifugal forces, and compatibility with high-speed applications while providing quiet operation.
- Universal Matching Capability: As part of a universally matchable set of 4 bearings with extra light preload, these bearings can be arranged in various configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements without additional selection or matching.
- Wide Temperature Range: Suitable for operation from -30°C to 110°C, accommodating various industrial environments and lubrication conditions.
71922 ACEGA/HCP4AL Bearing Typical Application Areas
The 71922 ACEGA/HCP4AL precision angular contact ball bearing is specifically engineered for high-performance applications including:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines
- Precision Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- High-Speed Automation: Robotics, pick-and-place systems, and semiconductor manufacturing equipment
- Professional Power Tools: High-frequency routers, precision drills, and industrial grinders
