71910 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71910 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71910 CD/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding the highest levels of rotational accuracy and rigidity. Operating under the P4A tolerance class, this bearing is engineered to handle combined loads with exceptional stability. Its universal matchable (SU) design allows for flexible mounting in pairs to support bidirectional axial loads, making it an ideal choice for high-speed spindles and other precision machinery where uncompromising performance is required.
71910 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71910 | Basic bearing series and size designation (50mm bore, 72mm OD). |
| C | 15° contact angle. |
| D | Enhanced internal design for high-precision applications. |
| P4A | Super-precision tolerance class, with enhanced running accuracy. |
| DGA | Universal Matchable (SU) bearing set, pre-loaded in a duplex arrangement. |
71910 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Accuracy: The P4A tolerance class and precision-ground components ensure minimal runout and vibration, providing the stable platform necessary for ultra-precision machining and measurement.
- Optimized Load Capacity: The 15° contact angle and robust internal geometry enable the bearing to efficiently support combined radial and axial loads.
- Superior High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 46,000 rpm. This makes it suitable for demanding high-speed spindle applications.
- Universal Matching (SU): This feature allows two bearings to be mounted in various preloaded configurations (back-to-back, face-to-face, or tandem) to optimize stiffness and load handling for the specific application.
- Premium Material Construction: Manufactured from chrome steel for both rings and balls, the bearing ensures high durability and long service life under continuous operation.
71910 CD/P4ADGA Bearing Typical Application Areas
The 71910 CD/P4ADGA is specified for use in high-performance machinery where precision and speed are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Medical Equipment: High-speed drills and scanners.
- Aerospace Testing Equipment: Precision rotary actuators and simulators.
