71805 ACDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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71805 ACDGB/P4 Bearing Product Overview & Core Advantages
The 71805 ACDGB/P4 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, this metric bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle provides optimal performance for combined loads, effectively handling both radial and significant axial loads in one direction. The phenolic resin cage and universal matching capability (SU) enable high-speed operation up to 103,000 rpm while maintaining dimensional stability across a wide temperature range from -30°C to 110°C.
71805 ACDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Impact |
|---|---|---|
| 71805 | Basic bearing designation (25mm bore, 37mm OD) | Compact bearing dimensions for space-constrained applications |
| AC | Angular Contact design | Optimized for combined radial and axial loading |
| DGB | Universal Matchable (SU designation) | Enables precise bearing arrangements in sets of 3 for optimal preload |
| P4 | High precision tolerance class | Superior running accuracy and dimensional stability |
71805 ACDGB/P4 Bearing Structural Features & Performance Benefits
High Precision Construction: The 71805 ACDGB/P4 features P4 tolerance class with tight dimensional tolerances (bore: -0.004mm to 0, OD: -0.004mm to 0) ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: With a 25° contact angle and 20 precision balls (3.175mm diameter), this bearing delivers excellent combined load capacity (radial dynamic: 878 lbf, static: 686 lbf) while maintaining high rigidity.
High-Speed Performance: The phenolic resin cage provides superior strength-to-weight ratio, enabling limiting speeds of 103,000 rpm with minimal centrifugal forces and excellent dimensional stability.
Universal Matching Capability: Designed as Universal Matchable (SU), these bearings can be supplied in matched sets of 3 with light preload (Class B), simplifying installation and ensuring optimal bearing performance in precision arrangements.
71805 ACDGB/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles requiring P4 accuracy
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Motors: Spindle motors, servo motors, and high-frequency applications
- Aerospace Components: Guidance systems, gyroscopes, and navigation equipment
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
