71917 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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71917 CE/HCP4A Bearing Product Overview & Core Advantages
The 71917 CE/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single-row bearing features a 15° contact angle and is supplied with a preload, ensuring high system rigidity, precise rotational accuracy, and minimal runout. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance and reduced rotating mass. Designed to handle combined loads, it efficiently supports substantial radial loads and axial loads in one direction, making it an ideal choice for high-reliability, high-speed spindles and precision machinery.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates the use of Ceramic (Si3N4) balls, which provide lower density, reduced centrifugal force, and superior performance at high speeds. |
| HC | Refers to the Phenolic (Hybrid Composite) cage, offering high strength, low weight, and excellent performance in high-speed applications. |
| P4A | Denotes a P4 (ABEC-7) tolerance class with specific running accuracy requirements, ensuring ultra-precise operation and minimal vibration. |
71917 CE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 15° contact angle and applied preload work in concert to deliver high system stiffness and exceptional rotational accuracy, critical for machining and precision applications.
- Superior High-Speed Capability: The combination of ceramic balls and a lightweight phenolic cage significantly reduces centrifugal forces and friction, enabling a high limiting speed of 28,000 rpm.
- Optimized Load Capacity: Engineered to handle combined loads effectively, with a high dynamic load rating of 6660 lbf, ensuring long service life under demanding conditions.
- Thermal Stability: The phenolic cage and ceramic balls contribute to stable performance across the specified temperature range from -30° to 110 °C.
71917 CE/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- High-Speed Robotic Drives: Joints and actuators requiring precise motion control.
