S71918 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71918 CB/HCP4A Bearing Product Overview & Core Advantages
The S71918 CB/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to accommodate combined loads (simultaneous radial and axial loads), this bearing features a 15° contact angle optimized for high-speed operation. Its ceramic balls and P4 (ABEC-7) tolerance class ensure superior performance in precision machinery, while the sealed design with preload provides enhanced rigidity and rotational accuracy.
S71918 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CB | Specific internal clearance and preload | Optimized for high rigidity and precise operation |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Reduced friction, higher speed capability, longer service life |
| P4A | ABEC-7 Precision Class | Ultra-precise dimensional and running accuracy |
S71918 CB/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings with ceramic balls significantly reduces friction, enables higher operating speeds, and provides superior resistance to wear and thermal expansion.
Phenolic Resin Cage: The phenolic cage material offers excellent dimensional stability at high speeds, contributing to the bearing's limiting speed of 16,000 rpm while maintaining low weight.
Precision Engineering: Manufactured to P4 tolerance class with tight dimensional controls (bore: -0.008mm to 0, OD: -0.009mm to 0) ensuring consistent performance in precision applications.
Sealed Design: The integrated seals protect against contamination while retaining lubrication, making it suitable for long-term maintenance-free operation in challenging environments.
S71918 CB/HCP4A Bearing Typical Application Areas
- High-speed machine tool spindles and precision machining centers
- Medical equipment including dental handpieces and surgical tools
- Aerospace components requiring high precision and reliability
- Robotics and automation systems where accuracy and speed are critical
- Semiconductor manufacturing equipment and precision instruments
