71940 ACDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71940 ACDGB/HCP4A Bearing Product Overview & Core Advantages
The 71940 ACDGB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Featuring a 25° contact angle and P4A tolerance class, this bearing delivers exceptional performance in handling combined radial and axial loads simultaneously. Its construction with ceramic balls and phenolic cage enables high-speed operation up to 6,300 rpm while maintaining dimensional stability. The light preload (Class B) ensures minimal deflection under operational stresses, making it ideal for precision machinery requiring high rigidity and reliable performance.
Model Code Detailed Explanation
| Suffix Code | Technical Meaning |
|---|---|
| ACD | 25° contact angle design optimized for high axial load capacity |
| GB | Universal Matchable (SU) bearing for precise preload setting in matched sets |
| HCP4A | High-precision P4A tolerance class with enhanced dimensional accuracy |
71940 ACDGB/HCP4A Bearing Structural Features & Performance Benefits
Advanced Material Composition: The combination of chrome steel rings with ceramic balls significantly reduces friction and wear, enabling higher limiting speeds and extended service life. The phenolic resin cage provides excellent strength-to-weight ratio and thermal stability.
Precision Engineering: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring precise fit and minimal runout. The 25° contact angle optimizes load distribution for both radial and axial forces.
High Load Capacity: With dynamic load rating of 44,775 lbf and static load rating of 56,250 lbf, this bearing delivers reliable performance under demanding operating conditions. The 26 ceramic balls with 25.4 mm diameter provide superior load distribution.
Thermal Performance: Operating temperature range from -30°C to 110°C with factory-applied lubrication suitable for various environmental conditions.
71940 ACDGB/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers requiring exceptional rotational accuracy
- High-Speed Robotic Systems: Articulated joints and rotary mechanisms demanding reliability
- Aerospace Components: Navigation systems and flight control mechanisms
- Medical Equipment: High-speed dental handpieces and surgical tools
- Precision Instrumentation: Measuring devices and optical systems requiring minimal vibration
- Semiconductor Manufacturing: Wafer handling equipment and precision positioning systems
