7022 ACD/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7022 ACD/HCP4ADBA Bearing Product Overview & Core Advantages
The 7022 ACD/HCP4ADBA is a duplex pair of precision angular contact ball bearings designed for the most demanding applications. This back-to-back (DB) arrangement provides exceptional system rigidity and the ability to withstand combined radial and axial loads from both directions. Manufactured to P4A tolerance class, it delivers superior running accuracy and rotational precision. The use of ceramic balls and a phenolic cage enables outstanding high-speed performance, making it an ideal solution for high-precision, high-reliability machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7022 | Basic bearing series and size designation (Bore: 110mm, OD: 170mm, Width: 28mm per bearing) |
| AC | Angular Contact design with a 25° contact angle |
| D | Duplex pair in Back-to-Back (DB) arrangement |
| HC | Hybrid Ceramic construction (steel rings with ceramic balls) |
| P4A | High Precision tolerance class (superior to ABEC 7) |
| DB | Duplex Back-to-Back mounting |
| A | Extra Light Preload for minimal friction and optimal high-speed operation |
7022 ACD/HCP4ADBA Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and provides stable support for shafts. This arrangement significantly increases the bearing's stiffness, making it capable of handling substantial combined loads while maintaining precision.
Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage enables exceptional limiting speeds up to 10,000 rpm. This hybrid construction also reduces friction and heat generation during high-speed operation.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for applications requiring extreme rotational accuracy.
Optimized Preload: The extra light preload (Class A) is factory-set to provide optimal internal clearance for high-speed applications while maintaining sufficient stiffness for precise positioning requirements.
7022 ACD/HCP4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision milling applications
- High-Speed Motors & Spindles: Electric motors, frequency converter drives, and industrial spindles requiring extreme rotational accuracy
- Precision Instrumentation: Measuring equipment, coordinate measuring machines, and optical instruments
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment
- Semiconductor Manufacturing: Wafer processing equipment, inspection systems, and precision positioning stages
