71922 ACEGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71922 ACEGA/P4A Bearing Product Overview & Core Advantages
The 71922 ACEGA/P4A is a super-precision angular contact ball bearing designed for applications demanding the highest levels of rotational accuracy and rigidity. Manufactured to the stringent P4A tolerance class, this bearing is engineered to handle combined loads with exceptional stability. Its 25° contact angle is optimized to support significant axial loads in one direction while also accommodating radial loads. The bearing comes pre-lubricated and is part of a Universal Matchable (SU) set, allowing for precise preload configuration when mounted in pairs or groups, making it ideal for high-speed spindles and other high-precision machinery.
71922 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 20mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| E | Optimized internal geometry (high-capacity design) for enhanced load rating. |
| GA | Indicates a specific preload level (Extra light / Class A). |
| P4A | Denotes an ultra-high precision tolerance class exceeding ABEC 7 standards. |
71922 ACEGA/P4A Bearing Structural Features & Performance Benefits
- Super-Precision Performance: The P4A tolerance class ensures minimal runout and vibration, which is critical for achieving superior surface finishes and positional accuracy in machine tools.
- High Rigidity and Load Capacity: The 25° contact angle and optimized internal geometry provide high stiffness and enable the bearing to handle substantial combined radial and axial loads.
- High-Speed Capability: The lightweight phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 10,000 rpm.
- Universal Matching (SU): As a Universal Matchable bearing, any number of these bearings can be mounted together to achieve a specific preload without selective matching, simplifying installation and inventory.
- Premium Materials: Constructed from vacuum-degassed chrome steel for both rings and balls, ensuring long service life and consistent performance under demanding conditions.
71922 ACEGA/P4A Bearing Typical Application Areas
The 71922 ACEGA/P4A is the bearing of choice for the most demanding high-precision and high-speed applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for CNC applications.
- Robotics: High-accuracy rotary joints and arm actuators.
- Aerospace & Defense: Gyroscopes, radar systems, and other instrumentation.
