71908 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71908 CE/HCP4A Bearing Product Overview & Core Advantages
The 71908 CE/HCP4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional speed capabilities and rigidity. This metric-series bearing features a 15° contact angle optimized for handling combined radial and axial loads in one direction. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, while the ceramic ball construction significantly enhances high-speed performance and reduces rotational mass. The phenolic cage provides excellent dimensional stability at elevated temperatures, making this bearing ideal for demanding precision machinery.
71908 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CE | Ceramic Balls | Enhanced high-speed capability, reduced weight, and improved stiffness |
| HC | Phenolic Resin Cage | Excellent dimensional stability and reduced friction at high speeds |
| P4A | P4 Tolerance Class with Specific Running Accuracy | Superior precision bearing performance with tight dimensional control |
71908 CE/HCP4A Bearing Structural Features & Performance Benefits
Optimized Contact Design: The 15° contact angle provides an ideal balance between radial and axial load capacity, making it suitable for applications with significant thrust loads.
Advanced Material Composition: Ceramic balls (typically silicon nitride) offer 40% less density than steel, reducing centrifugal forces and enabling higher limiting speeds (58,000 rpm). Their non-conductive properties also minimize electrical erosion.
Precision Engineering: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration for applications requiring exceptional rotational accuracy.
Thermal Stability: The phenolic resin cage maintains dimensional integrity across the operating temperature range (-30° to 110°C), ensuring consistent performance under thermal variation.
Preload Capability: Designed to accommodate preload, enhancing system rigidity and reducing deflection under operational loads.
71908 CE/HCP4A Bearing Typical Application Areas
- High-speed machine tool spindles and precision machining centers
- Dental and medical equipment handpieces requiring sterile operation
- Semiconductor manufacturing equipment and wafer handling systems
- Aerospace components including gyroscopes and navigation systems
- High-frequency motor spindles and precision robotics
- Laboratory and analytical equipment requiring vibration-free operation
