7022 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 7022 ACDGA/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single row bearing features an open design and is manufactured to P4A super-precision tolerance standards, ensuring minimal runout and superior rotational accuracy. Its core advantages include the ability to handle high combined loads (radial and axial) simultaneously, facilitated by a 25° contact angle. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speed (16,250 rpm), and extended service life, making it ideal for high-speed spindle applications.
7022 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7022 | Basic bearing series, indicating a 110mm bore, 170mm OD, and 28mm width. |
| AC | Angular Contact design, optimized for combined loads. |
| DGA | Specific internal design and contact angle (25°). |
| HCP4A | Indicates Universal Matchable (SU) bearings supplied in a matched set of 3 with Extra Light (Class A) preload and P4A super-precision tolerance. |
Structural Features and Performance Benefits
- High Precision and Rigidity: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), providing high system rigidity and precise shaft positioning.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage enables a high limiting speed of 16,250 rpm, minimizing heat generation and power loss.
- Excellent Load Capacity: The 25° contact angle is optimized to support significant combined radial and axial loads, with dynamic and static load ratings of 23,400 lbf.
- Universal Matching Capability: Designed as Universal Matchable (SU), these bearings can be arranged in pairs (back-to-back, face-to-face, or tandem) to create a preloaded bearing set that maximizes stiffness and accuracy in the application.
7022 ACDGA/HCP4A Bearing Typical Application Areas
The 7022 ACDGA/HCP4A is specifically designed for high-performance machinery requiring utmost precision and speed. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines, high-frequency motor spindles.
- Robotics: High-accuracy rotary joints and arm actuators.
- Aerospace and Defense: Gyroscopes, radar systems, and other precision instrumentation.
