71915 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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71915 CE/HCP4A Bearing Product Overview & Core Advantages
The 71915 CE/HCP4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and speed capability. Its defining characteristics include a 15° contact angle and P4 (ABEC-7) tolerance class, ensuring superior running accuracy. The bearing is preloaded and features a phenolic resin cage and ceramic balls, which collectively contribute to reduced friction, lower operating temperatures, and significantly higher limiting speeds. This configuration is ideal for applications demanding high rigidity and the ability to accommodate combined loads, primarily thrust loads in one direction alongside radial loads.
71915 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 71915 | Standard designation for a high-precision angular contact bearing series with a 75 mm bore and 105 mm outside diameter. |
| CE | Indicates a 15° contact angle, optimized for high-speed operation and providing a balance between radial and axial load capacity. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls (Silicon Nitride) running in steel rings. This reduces centrifugal forces, lowers friction, and extends service life. |
| P4A | Denotes a P4 tolerance class (equivalent to ABEC-7) with specific internal running accuracy and preload requirements for optimal performance in high-precision spindles. |
71915 CE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls results in superior performance. Ceramic balls are lighter, harder, and have a lower coefficient of thermal expansion than steel, enabling higher speeds, reduced heat generation, and longer service life.
- Phenolic Resin Cage: This lightweight, high-strength cage material offers excellent dimensional stability and low friction at high speeds, contributing directly to the bearing's high limiting speed of 32,000 rpm.
- Precision & Preload: Manufactured to P4 tolerance class and supplied with preload, this bearing provides high system rigidity, precise shaft positioning, and minimizes deflection under load.
- Optimized Load Capacity: The 15° contact angle is engineered to handle significant combined loads, making it exceptionally capable of managing thrust loads in one direction in addition to radial loads.
71915 CE/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Robotics
- Advanced Dental and Medical Equipment
