71813 CDGB/VQ253
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71813 CDGB/VQ253 Bearing Product Overview & Core Advantages
The 71813 CDGB/VQ253 is a high-precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This single bearing features a 15° contact angle and light preload (Class B), making it ideal for managing combined radial and axial loads simultaneously. Its compact design with a 10mm width provides space-saving solutions while delivering reliable performance in high-speed applications up to 36,000 rpm. The phenolic cage and chrome steel construction ensure optimal performance in demanding operational environments.
71813 CDGB/VQ253 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 71813 | Basic bearing designation | Defines core dimensions: 65mm bore, 85mm OD, 10mm width |
| CD | 15° contact angle | Optimized for combined radial and axial load capacity |
| GB | Light preload (Class B) | Reduces deflection, improves rigidity and running accuracy |
| VQ253 | Special selection group | Ensures precise matching for multiple bearing arrangements |
71813 CDGB/VQ253 Bearing Structural Features & Performance Benefits
High Precision Design: Manufactured with tight dimensional tolerances (bore and OD tolerance: -0.004mm to 0) ensuring consistent performance and easy installation.
Optimized Load Capacity: The 15° contact angle configuration provides excellent combined load handling with dynamic radial load rating of 3038 lbf and static rating of 3285 lbf.
High-Speed Capability: The phenolic resin cage and optimized internal geometry enable limiting speeds of 36,000 rpm, making it suitable for high-rotation applications.
Thermal Stability: Chrome steel construction maintains dimensional stability across the operating temperature range of -30°C to 110°C.
Precision Engineering: Features 29 precision balls with 5.556mm diameter for smooth operation and reduced vibration.
71813 CDGB/VQ253 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles
- High-Speed Motors: Electric motor applications requiring precise rotor positioning
- Precision Instrumentation: Medical equipment and measuring devices
- Robotics: Joint and articulation mechanisms in industrial robots
- Aerospace Components: Auxiliary systems requiring high reliability and precision
