71810 ACD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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71810 ACD/P4DGA Bearing Product Overview & Core Advantages
The 71810 ACD/P4DGA is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-lubricated pair, it is engineered to handle combined radial and axial loads simultaneously. Its P4 tolerance class and extra light preload (Class A) ensure smooth, quiet operation with minimal rotational vibration, making it ideal for high-reliability, high-rigidity spindles and precision machinery.
71810 ACD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71810 | Basic bearing designation indicating the bore diameter of 50 mm and the series. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates the bearing is supplied as a Universal Matchable (SU) pair, pre-configured for optimal performance. |
| P4 | Denotes a high-precision tolerance class for applications requiring extreme running accuracy. |
| DGA | Specifies the extra light preload (Class A) and that the bearing is pre-lubricated. |
71810 ACD/P4DGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double-row angular contact design provides superior rigidity, enabling stable support for spindles under combined loads. With a 25° contact angle, it efficiently manages significant axial loads in both directions.
Super-Precision & High-Speed Performance: Manufactured to P4 tolerance standards with a phenolic resin cage, this bearing achieves extremely low noise and vibration levels. This construction, combined with the optimized internal geometry, supports a high limiting speed of 41,000 rpm.
Optimized for Matched Sets: As a Universal Matchable (SU) bearing, it is designed to be mounted in pairs (back-to-back or face-to-face) without the need for selective shimming. This simplifies installation and ensures pre-defined, consistent performance characteristics, including precise preload.
Durable Material Construction: Manufactured from high-grade chrome steel for both rings and balls, the bearing offers excellent wear resistance and long service life under demanding operating conditions.
71810 ACD/P4DGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Spindles: PCB drilling and milling spindles.
- Robotics: High-precision joints and actuators requiring minimal backlash.
