71922 ACD/HCP4AQBCA
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 ACD/HCP4AQBCA Bearing Product Overview & Core Advantages
The 71922 ACD/HCP4AQBCA is a high-precision quadruplex angular contact ball bearing designed for the most demanding applications. This matched set provides exceptional stiffness and stability, capable of accommodating combined radial and axial loads simultaneously. Manufactured to a P4A tolerance class and featuring a ceramic ball and phenolic cage construction, it is engineered for superior performance in high-speed and high-rigidity scenarios, offering outstanding operational reliability and longevity.
Model Code Breakdown
- 71922: Basic series designation for a high-precision angular contact ball bearing.
- ACD: Signifies a 25° contact angle, optimized for high axial load capacity.
- HC: Indicates the use of Hybrid Ceramic balls (steel rings with ceramic balls).
- P4A: Denotes an ultra-precision tolerance class exceeding ABEC 7/ISO P4, ensuring minimal runout and vibration.
- QBC: Specifies the Quadruplex Back-to-Back matched arrangement, providing maximum rigidity and moment load capacity.
- A: Indicates an Extra Light preload for minimal friction and optimal high-speed performance.
71922 ACD/HCP4AQBCA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The quadruplex back-to-back (QBC) configuration creates an extremely rigid bearing system, ideal for applications requiring high resistance to moment loads and shaft deflection. This setup efficiently handles significant combined radial and axial loads.
Superior High-Speed Performance: The combination of a lightweight phenolic resin cage, hybrid ceramic balls (reducing centrifugal forces and friction), and an extra light preload (A) enables a very high limiting speed of 16,000 rpm.
Enhanced Operational Life: Ceramic balls are harder, lighter, and offer better corrosion resistance than steel, leading to reduced wear, lower operating temperatures, and extended service life, especially in challenging environments.
Precision Engineering: The P4A tolerance class guarantees extreme dimensional and running accuracy, which is critical for applications demanding minimal vibration and high rotational precision.
71922 ACD/HCP4AQBCA Bearing Typical Application Areas
This bearing is specified for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Robotics and Automation Arms
- Aerospace & Defense Systems (Gyroscopes, radar equipment)
- High-frequency Main Spindles
- Advanced Medical Equipment (e.g., high-speed dental handpieces)
