71914 ACBGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 71914 ACBGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its 25° contact angle and phenolic cage are optimized for high-speed operation, making it an ideal solution for machine tool spindles and other high-performance machinery requiring reliable performance under combined loads.
71914 ACBGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing series designation |
| AC | Angular Contact design |
| B | 40° contact angle (standard for this series) |
| GA | Universal Matchable bearing in a set of 2 |
| P4A | Super precision tolerance class with enhanced running accuracy |
Structural Features and Performance Benefits
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling operation at limiting speeds up to 28,000 rpm. The optimized internal geometry minimizes friction and heat generation.
Exceptional Rigidity and Load Capacity: With a radial dynamic load rating of 2925 lbf and static load rating of 2655 lbf, this bearing maintains dimensional stability under significant combined radial and axial loads. The precision-ground raceways and 32 chrome steel balls ensure consistent performance.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing delivers minimal runout and vibration for superior machining quality.
Universal Matching Design: As a Universal Matchable (SU) bearing supplied in matched sets of 2, these bearings can be arranged in various configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements for preload and stiffness.
71914 ACBGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling applications
- Precision Instrumentation: Measuring equipment, optical scanners, and laboratory instruments
- High-Speed Motors: Spindle motors, high-frequency motors, and precision drive systems
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
