71806 ACDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71806 ACDGB/P4 Bearing Product Overview & Core Advantages
The 71806 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 bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle is optimized to handle significant combined loads (radial and axial) in one direction, while the Universal Matchable (SU) design allows for precise bearing pairing in duplex arrangements to achieve optimal preload and system stiffness. The phenolic cage and precision-ground chrome steel components ensure reliable high-speed performance up to 100,500 rpm.
71806 ACDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71806 | Basic bearing designation indicating size series and bore diameter |
| AC | Angular Contact design with 25° contact angle |
| DGB | Universal Matchable bearing for duplex mounting (Back-to-Back/DB arrangement) |
| P4 | High precision tolerance class for exceptional running accuracy |
71806 ACDGB/P4 Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4 tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and consistent performance in precision applications.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and reduced friction, enabling limiting speeds of 100,500 rpm. The optimized ball quantity (23) and ball diameter (3.175 mm) configuration balances load capacity with minimal centrifugal forces.
Superior Load Capacity: With a 25° contact angle, this bearing efficiently handles combined radial and axial loads. The dynamic load rating of 936 lbf and static load rating of 799 lbf provide reliable performance under demanding conditions.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be precisely paired with another identical bearing to create duplex sets with controlled preload (Light / Class B), enhancing system rigidity and rotational accuracy.
71806 ACDGB/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional rotational accuracy
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Rotary Systems: Dental handpieces, small precision motors, and turbo-molecular pumps
- Aerospace Components: Guidance systems, gyroscopes, and avionics requiring reliable high-speed operation
- Medical Equipment: Surgical tools and diagnostic imaging devices demanding precision and reliability
