7222 ACDGA/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7222 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7222 ACDGA/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, it delivers superior running precision. Its 25° contact angle and Universal Matchable (SU) design enable it to handle significant combined loads (radial and axial) efficiently. The bearing comes pre-lubricated and features an open seal type for optimal performance in controlled environments, making it ideal for high-speed and high-reliability machinery.
7222 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7222 | Basic bearing series and size designation (110mm bore, 200mm OD). |
| AC | Angular Contact design, optimized for combined loads. |
| D | Two single bearings in a Universal Matchable (SU) set. |
| GA | Extra light preload (Class A) for reduced friction and heat generation. |
| P4A | High-Precision Tolerance Class, exceeding ABEC 7 standards for exceptional running accuracy. |
7222 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 25° contact angle provides excellent resistance to combined loads. The Universal Matchable (SU) arrangement of two bearings ensures stable and rigid support for shafts, enhancing system stiffness.
High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 16,250 rpm. The extra light preload (GA) further reduces friction, enabling smoother operation at elevated speeds.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, this bearing guarantees minimal runout and vibration for precision applications.
Durable Construction: Components made from chrome steel for both rings and balls offer high wear resistance and durability, supporting a long operational life under demanding conditions.
7222 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Drives
