71909 CEGA/HCP4AL
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
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71909 CEGA/HCP4AL Bearing Product Overview & Core Advantages
The 71909 CEGA/HCP4AL is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with ceramic balls and manufactured to P4A super-precision tolerance, this bearing delivers superior rotational accuracy, reduced friction, and extended service life. Its 15° contact angle is optimized for handling combined loads, particularly high-speed applications where rigidity and minimal heat generation are critical. The phenolic cage and universal matching capability make it ideal for preloaded arrangements in spindle assemblies.
71909 CEGA/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71909 | Basic bearing series: Lightweight series with 45mm bore diameter |
| CE | Contact angle: 15° |
| GA | Preload: Extra light (Class A) |
| HC | Hybrid ceramic: Ceramic balls with steel rings |
| P4A | Tolerance class: Super precision grade |
71909 CEGA/HCP4AL Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride ceramic balls significantly reduces friction, minimizes heat buildup, and provides excellent electrical insulation properties. This construction enables higher limiting speeds (41,000 rpm) compared to all-steel equivalents.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring consistent performance in high-precision applications. The phenolic resin cage offers excellent dimensional stability and reduced weight, contributing to smoother operation at high speeds.
Optimized Load Capacity: The 15° contact angle provides balanced performance for combined radial and axial loads, with dynamic load rating of 2340 lbf and static load rating of 1530 lbf. The extra light preload (Class A) ensures minimal starting torque while maintaining shaft rigidity.
Universal Matching Capability: Designed as Universal Matchable (SU), these bearings can be paired in any combination to achieve required preload levels, simplifying inventory and assembly processes.
71909 CEGA/HCP4AL Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision milling applications
- High-Speed Motors: Servo motors, spindle motors, and high-frequency electric motors
- Precision Instruments: Measuring equipment, optical instruments, and laboratory apparatus
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
