71922 CD/HCP4ATGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71922 CD/HCP4ATGA Bearing Product Overview & Core Advantages
The 71922 CD/HCP4ATGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to a P4A tolerance class, it offers superior running accuracy and dimensional stability. A key feature is its Universal Matchable (SU) designation, allowing bearings to be mounted in any combination (back-to-back, face-to-face, or tandem) without preload variation, providing exceptional design flexibility. The use of a ceramic ball and phenolic cage combination contributes to its capability as a high-speed bearing, enabling operation at limiting speeds up to 10,000 rpm while managing combined loads effectively.
71922 CD/HCP4ATGA Bearing Model Code Explained, Specifications & Naming Convention
- 71922: Basic designation indicating a high-precision angular contact bearing series with a 110 mm bore and 150 mm outside diameter.
- CD: Signifies a 15° contact angle and Universal Matchable (SU) design.
- HC: Indicates the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4A: Denotes a very high precision tolerance class, exceeding ABEC 7/ISO P4 standards.
- T: Specifies the cage material, in this case, a phenolic resin cage.
- GA: Indicates the bearing is pre-lubricated with a specific, high-performance grease.
71922 CD/HCP4ATGA Bearing Structural Features & Performance Benefits
High Precision and Rigidity: Manufactured to P4A tolerance class with stringent dimensional controls, this bearing ensures minimal runout and vibration, which is critical for high-precision spindles. The Universal Matchable (SU) design allows for precise preload control in any mounting arrangement, resulting in a very stiff bearing system.
Enhanced High-Speed Performance: The combination of ceramic balls and a lightweight phenolic cage significantly reduces centrifugal forces and friction, enabling stable operation at the high limiting speed of 10,000 rpm. This makes it an ideal high-speed bearing.
Superior Load Capacity: With a 15° contact angle, the bearing is optimized to handle significant combined loads (radial and axial loads acting simultaneously). Its dynamic load rating of 30,375 lbf and static load rating of 48,600 lbf ensure reliable performance under demanding conditions.
Optimized Lubrication: The bearing is pre-lubricated with a grease suitable for the specified temperature range of -30°C to 110°C, providing long-term, maintenance-free operation.
71922 CD/HCP4ATGA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and auxiliary power units (APUs).
- High-Frequency Motors and Spindles: Where minimal vibration and high rotational accuracy are required.
