71932 ACDGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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71932 ACDGB/P4A Bearing Product Overview & Core Advantages
The 71932 ACDGB/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate primarily axial loads in one direction, combined with moderate radial loads, this bearing features a 25° contact angle and P4A super-precision tolerance class, making it ideal for machine tool spindles and other high-speed, high-accuracy machinery. Its universal matching (SU) capability allows for flexible mounting arrangements in sets to handle complex load conditions.
71932 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71932 | Basic bearing series and size designation (160mm bore, 220mm OD) |
| AC | Angular Contact design with 25° contact angle |
| D | High ball complement design for increased load capacity |
| GB | Light preload / Class B for reduced deflection and vibration |
| P4A | Super precision tolerance class for exceptional running accuracy |
71932 ACDGB/P4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and superior rotational accuracy for precision applications.
Optimized Load Capacity: Features a 25° contact angle and high ball complement (28 balls of 19.05mm diameter) providing excellent axial load capacity (34,425 lbf static) while maintaining good radial load handling (27,900 lbf dynamic).
High-Speed Capability: The phenolic resin cage ensures stable operation at high speeds with a limiting speed of 11,000 rpm, while the light preload (Class B) minimizes friction and heat generation.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be arranged in sets of three to accommodate combined loads and moments, providing design flexibility for complex applications.
Premium Material Selection: Constructed from chrome steel for both rings and balls, offering excellent wear resistance and durability across a wide temperature range (-30°C to 110°C).
71932 ACDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling machines
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Rotating Machinery: Turbines, compressors, and pumps requiring precision operation
- Robotics and Automation: Industrial robot arms, CNC machinery, and precision positioning systems
- Aerospace Components: Guidance systems, aircraft instrumentation, and satellite mechanisms
