71948 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71948 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 71948 ACDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered with ceramic balls and a phenolic cage, this bearing delivers superior performance in high-speed environments while maintaining dimensional stability under significant combined loads. Its P4A tolerance class ensures ultra-precise operation, making it ideal for machine tool spindles and other high-performance rotational systems.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71948 | Basic bearing series and size designation |
| AC | Angular Contact design with 25° contact angle |
| D | High precision manufacturing standards |
| GA | Universal Matchable bearing set (3 bearings) |
| HC | Hybrid Ceramic construction with ceramic balls |
| P4A | Ultra-precision tolerance class (ABEC 7 equivalent) |
71948 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings with ceramic balls significantly reduces centrifugal forces, enabling higher operating speeds while providing excellent electrical insulation properties and extended service life.
High Rigidity Design: The 25° contact angle and optimized internal geometry deliver exceptional stiffness, making this bearing capable of handling substantial axial and radial combined loads simultaneously.
Superior High-Speed Performance: The lightweight phenolic cage and ceramic balls work in conjunction to achieve a limiting speed of 7,500 rpm, while the open design facilitates efficient lubrication management.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on bore diameter, outside diameter, and width, ensuring consistent performance in precision applications.
71948 ACDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring precision and thermal stability
- Aerospace Systems: Jet engine components, auxiliary power units, and flight control systems
- Medical Equipment: High-speed dental handpieces, surgical drills, and imaging systems
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages, and vacuum chamber applications
- High-Performance Motors: Electric vehicle traction motors, industrial servo motors, and generator systems
