71817 CDGC/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71817 CDGC/P4 Bearing Product Overview & Core Advantages
The 71817 CDGC/P4 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single bearing with P4 tolerance class, it delivers superior running accuracy. Its 15° contact angle is optimized to support significant combined loads—handling both radial and axial forces simultaneously. The moderate preload (Class C) ensures high system stiffness and precise shaft positioning right from installation. This bearing is universally matchable (SU), allowing for flexible arrangement in sets to meet specific application requirements for preload and rigidity, making it an ideal choice for high-speed, high-precision spindles and machinery.
71817 CDGC/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71817 | Basic bearing series and size designation (85mm bore, 110mm OD, 13mm width). |
| CD | Contact angle of 15°. |
| G | Moderate preload, Class C. |
| C | Flanged outer ring. |
| /P4 | High tolerance class P4, denoting very tight dimensional and running accuracy tolerances. |
71817 CDGC/P4 Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The angular contact design with a 15° contact angle and moderate preload provides high axial and radial rigidity, minimizing deflection under load and ensuring precise shaft guidance. The P4 tolerance class guarantees exceptionally low runout and vibration.
Superior Load Capacity: Engineered to handle combined radial and axial loads efficiently. With a dynamic load rating of 4860 lbf and a static load rating of 5738 lbf, it offers reliable performance in strenuous conditions.
Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 28,000 rpm. The open design allows for efficient lubrication management in high-speed systems.
Universal Matching Capability (SU): As a universally matchable bearing, any number of these bearings can be mounted together in any combination (back-to-back, face-to-face, or tandem) to achieve the desired preload and stiffness without selective matching, simplifying inventory and assembly.
71817 CDGC/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning spindles requiring P4-level precision and rigidity.
- Precision Rotary Systems: Applications in semiconductor manufacturing, coordinate measuring machines, and optical scanners.
- High-Frequency Motors and Spindles: Where high rotational speeds and accurate positioning are critical.
- Industrial Pumps and Compressors: For shafts subjected to significant combined loads.
