71817 CD/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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71817 CD/P4 Bearing Product Overview & Core Advantages
The 71817 CD/P4 is a single-row angular contact ball bearing designed for applications demanding high precision and superior rotational accuracy. Manufactured to P4 (ABEC-7) tolerance class, it excels in scenarios requiring minimal runout and precise shaft positioning. Its key advantage lies in its ability to accommodate combined loads—handling significant radial loads alongside substantial axial loads in one direction—thanks to its defined 15° contact angle. The bearing is supplied preloaded, ensuring high system rigidity and immediate operational readiness, making it ideal for high-speed spindles and precision machinery.
71817 CD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71817 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with an 85 mm bore, 110 mm OD, and 13 mm width. |
| CD | Indicates a specific contact angle (15°) and internal design optimized for high rigidity and high-speed performance. |
| P4 | Denotes the tolerance class, equivalent to ABEC-7. This signifies extremely tight dimensional and running accuracy tolerances for precision applications. |
71817 CD/P4 Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The single-row design with a 15° contact angle and factory-applied preload provides exceptional axial and radial stiffness, minimizing deflection under load for superior machining accuracy.
Optimized for High Speeds: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 17,000 rpm. This, combined with the optimized internal geometry, makes it a true high-speed bearing.
Superior Load Capacity: Engineered to handle combined loads effectively. With a dynamic load rating of 4860 lbf and a static load rating of 5738 lbf, it offers reliable performance in demanding conditions.
Material Integrity: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance within a temperature range of -30°C to 110°C.
71817 CD/P4 Bearing Typical Application Areas
The 71817 CD/P4 is engineered for high-performance machinery where precision and speed are critical. Common applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motors and spindles.
- Robotics: High-accuracy joint and arm actuators.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and navigation instruments.
