7022 ACDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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7022 ACDGB/HCP4A Bearing Product Overview & Core Advantages
The 7022 ACDGB/HCP4A is a precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. Operating as a universal matchable (SU) bearing supplied in a set of three, it enables optimized preload configurations for superior system performance. Its defining characteristics include a P4A tolerance class for extreme dimensional precision, a ceramic ball and phenolic cage construction for high-speed capability, and a 25° contact angle designed to handle significant combined loads. This bearing is pre-lubricated and operates effectively within a temperature range of -30°C to 110°C, making it an ideal solution for high-reliability, high-speed machinery.
7022 ACDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- 7022: Basic series number, indicating a 110 mm bore and 170 mm outside diameter.
- AC: Angular Contact design.
- D: High contact angle of 25°.
- GB: Light preload / Class B.
- /HC: Hybrid Ceramic, signifying ceramic balls with steel rings.
- P4A: Superior tolerance class exceeding ABEC 7/ISO P4 standards for runout and dimensional accuracy.
7022 ACDGB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 25° contact angle is optimized to support substantial combined radial and axial loads simultaneously, providing stable and rigid shaft support.
- Exceptional High-Speed Performance: The combination of lightweight ceramic balls and a phenolic cage reduces centrifugal forces and friction, enabling a high limiting speed of 16,250 rpm. This makes it a true high-speed bearing.
- Precision and Thermal Stability: Manufactured to a P4A tolerance class, it ensures minimal runout and vibration. The phenolic cage offers excellent dimensional stability and operates effectively within a wide temperature range.
- Universal Matching: Supplied as a universal matchable (SU) set of three bearings, they can be arranged in tandem, back-to-back, or face-to-face configurations to achieve specific preload and stiffness requirements without selective mounting.
7022 ACDGB/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- High-Frequency Motors and Spindles: Where minimal vibration and high rotational accuracy are critical.
- Precision Instrumentation: Advanced medical equipment, optical scanners, and coordinate measuring machines.
- Aerospace Actuation Systems: Applications requiring reliability at high speeds and temperatures.
