71807 ACDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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71807 ACDGB/P4 Bearing Product Overview & Core Advantages
The 71807 ACDGB/P4 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to simultaneously support combined radial and axial loads in one direction, this bearing features a 25° contact angle and P4 super-precision tolerance class, making it ideal for machine tool spindles and other high-speed, high-accuracy machinery. Its compact design with a 7mm width provides a space-saving solution without compromising performance.
71807 ACDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71807 | Basic bearing designation (35mm bore, 47mm OD) |
| AC | Angular Contact design with 25° contact angle |
| DGB | Universal Matchable (SU) - bearings can be mounted in tandem, back-to-back, or face-to-face arrangements |
| P4 | Super-precision tolerance class for exceptional running accuracy |
71807 ACDGB/P4 Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4 tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration for superior rotational accuracy.
Optimized Load Capacity: The 25° contact angle provides excellent axial load capacity in one direction while maintaining substantial radial load capability, with dynamic and static load ratings of 981 lbf and 911 lbf respectively.
High-Speed Performance: Features a phenolic resin cage that reduces friction and enables high-speed operation up to 56,000 rpm, making it suitable for demanding spindle applications.
Precision Matching Capability: As a Universal Matchable (SU) bearing, it can be supplied in matched sets of 3 bearings with light preload (Class B) for optimal stiffness and minimal deflection under operational loads.
Premium Material Selection: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and durability in precision applications.
71807 ACDGB/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling machine spindles
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Motors: Spindle motors, high-frequency motors, and precision drive systems
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Aerospace Components: Guidance systems, avionics, and precision control mechanisms
