71815 ACDGB/VQ253
71800 Series Super Precision Angular Contact Ball Bearings
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71815 ACDGB/VQ253 Bearing Product Overview & Core Advantages
The 71815 ACDGB/VQ253 is a single-row angular contact ball bearing designed for applications requiring high precision and reliable performance under combined loads. Engineered with a 25° contact angle and light preload (Class B), this bearing excels at handling significant axial loads in one direction while supporting radial loads. Its compact design with a 10mm width makes it ideal for space-constrained, high-speed applications. The phenolic cage and optimized internal geometry contribute to smooth operation at limiting speeds up to 28,000 rpm, while the chrome steel construction ensures durability and long service life.
71815 ACDGB/VQ253 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Significance |
|---|---|---|
| ACD | Angular Contact Design | Optimized for combined radial and axial loads |
| GB | Light Preload / Class B | Reduces deflection and improves running accuracy |
| VQ253 | Special Lubrication Code | Pre-lubricated for immediate operation within specified temperature range |
71815 ACDGB/VQ253 Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and reduced friction, enabling stable operation at high rotational speeds. Combined with 33 precision balls and optimized raceway geometry, this bearing achieves exceptional high-speed performance.
Precision Engineering: Manufactured with tight dimensional tolerances (bore and OD tolerance: -0.004mm to 0), this bearing ensures precise shaft positioning and minimal runout. The 25° contact angle provides optimal load distribution for both radial and axial forces.
Enhanced Load Capacity: With a dynamic load rating of 2992 lbf and static load rating of 3600 lbf, this bearing delivers reliable performance under demanding conditions. The chrome steel construction and heat treatment provide consistent hardness and wear resistance.
Thermal Stability: The phenolic cage and special lubrication allow operation across a wide temperature range from -30°C to 110°C, maintaining performance in varying environmental conditions.
71815 ACDGB/VQ253 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring accurate rotational performance
- High-Speed Motors: Electric motors and generators operating at elevated speeds
- Precision Instruments: Medical equipment, measuring devices, and optical instruments
- Pump Systems: Centrifugal pumps and compressor applications
- Aerospace Components: Auxiliary systems requiring lightweight, high-performance bearings
