71920 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71920 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The 71920 CE/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined loads (simultaneous radial and axial forces), this bearing features a universal matchable (SU) design, allowing two bearings to be paired in any configuration for optimal preload control. Its ceramic balls and P4A super-precision tolerance deliver superior high-speed capability and rotational accuracy, making it ideal for machine tool spindles and other high-performance machinery where rigidity and reliability are critical.
71920 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| CE | 15° Contact Angle | Optimized for high-speed operation with balanced axial and radial load capacity |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Reduced friction, higher speed capability, and extended service life |
| P4A | Super Precision Tolerance | Exceptional running accuracy for applications requiring minimal vibration |
| DGA | Universal Matchable (SU), Extra Light Preload | Flexible mounting arrangements with minimal preload for high-speed applications |
71920 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds (16,000 rpm) while providing excellent wear resistance and electrical insulation properties.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for superior rotational accuracy.
Optimized Cage Design: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the bearing's exceptional dynamic performance.
Universal Matching Capability: As a universal matchable (SU) bearing, two units can be arranged in any combination (back-to-back, face-to-face, or tandem) to achieve the required preload and stiffness for specific application requirements.
71920 CE/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding machines
- High-Speed Motors: Electric spindle motors and high-frequency applications
- Precision Instrumentation: Measuring equipment and laboratory apparatus
- Aerospace Components: Gyroscopes and navigation systems
- Medical Equipment: Dental handpieces and surgical tools
