71917 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71917 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71917 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under P4A tolerance class, this bearing is engineered to handle combined radial and axial loads simultaneously. Its universal matchable (SU) design allows for flexible mounting arrangements in sets, providing superior system stability. The combination of a phenolic cage and optimized internal geometry enables high-speed operation up to 17,000 rpm, making it an ideal solution for high-precision, high-performance machinery.
71917 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71917 | Basic bearing series and size designation |
| CD | Contact angle of 15° and high-precision design |
| P4A | Ultra-precision tolerance class with specific running accuracy requirements |
| DGA | Universal matchable bearing (SU designation) for paired mounting |
71917 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration for precision applications.
Optimized Load Capacity: With a 15° contact angle and 25 chrome steel balls, this bearing delivers excellent combined load capacity (17,122 lbf dynamic, 21,712 lbf static) while maintaining high-speed capability.
Superior High-Speed Performance: The phenolic cage material provides excellent strength-to-weight ratio, contributing to the impressive limiting speed of 17,000 rpm while reducing centrifugal forces.
Universal Matching Capability: As a universal matchable (SU) bearing, it can be mounted in various preload configurations (back-to-back, face-to-face, or tandem) using two bearings to create optimized stiffness and load distribution systems.
Extra Light Preload (Class A): Provides minimal starting torque while ensuring precise rotational characteristics and reduced heat generation during operation.
71917 CD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring exceptional rotational accuracy and rigidity
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus demanding minimal vibration
- High-Speed Machining Centers: Applications where both high rotational speeds and accurate positioning are critical
- Robotic Systems: Precision joints and rotary tables in industrial automation and robotics
- Aerospace Components: Guidance systems, flight control mechanisms, and auxiliary power units
- Medical Equipment: High-speed dental handpieces, surgical robots, and diagnostic imaging systems
