71924 ACD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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71924 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 71924 ACD/P4ADGB is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing with P4A tolerance class, it delivers superior running precision and can be mounted in various preload configurations. Its optimized 25° contact angle provides excellent capacity for handling combined radial and axial loads, making it ideal for demanding applications where high rigidity and precise shaft positioning are critical requirements.
71924 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
| ACD | 25° contact angle design optimized for high-speed operation and universal matching capability |
| P4A | High precision tolerance class with enhanced dimensional and running accuracy requirements |
| DGB | Universal matchable (SU) designation, allowing flexible mounting arrangements in pairs |
71924 ACD/P4ADGB Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with tight dimensional control (bore diameter tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration for precision applications.
Optimized Load Capacity: The 25° contact angle and 28 high-quality chrome steel balls provide superior performance under combined radial and axial loads, with dynamic load rating of 26,775 lbf and static load rating of 38,925 lbf.
High-Speed Capability: Featuring a phenolic cage and optimized internal geometry, this bearing achieves a limiting speed of 16,250 rpm, making it suitable for high-speed spindle applications.
Universal Matching Design: As a universal matchable (SU) bearing, it can be mounted in various preloaded arrangements (back-to-back, face-to-face, or tandem) to achieve the required stiffness and thermal stability.
71924 ACD/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling machine spindles requiring exceptional accuracy and rigidity
- Precision Industrial Machinery: High-speed automation equipment, robotics, and precision positioning systems
- Medical Equipment: Dental handpieces, medical imaging devices, and laboratory instrumentation
- Aerospace Components: Guidance systems, flight control mechanisms, and auxiliary power units
- High-Speed Motors: Precision electric motors and servo drives demanding minimal runout and vibration
