71909 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71909 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The 71909 CE/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing features a 15° contact angle and extra light preload (Class A), making it ideal for spindle applications requiring minimal deflection under combined loads. Its ceramic ball construction and P4A tolerance class ensure superior high-speed capability and rotational accuracy, while the phenolic cage provides excellent performance in high-velocity environments.
71909 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 71909 | Basic bearing series with 45mm bore diameter | Standardized bearing dimensions for compatibility |
| CE | Contact angle of 15° | Optimized for combined loads and high-speed operation |
| HC | Hybrid ceramic balls | Enhanced high-speed performance and reduced weight |
| P4A | Ultra-precision tolerance class | Exceptional running accuracy for precision bearing applications |
| DGA | Universal match pairing designation | Simplified mounting and optimal bearing arrangement |
Structural Features & Performance Advantages
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, enabling limiting speeds up to 41,000 rpm while maintaining dimensional stability across the operating temperature range (-30°C to 110°C).
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, this bearing delivers exceptional running accuracy and minimal vibration for high-precision applications.
Optimized Load Capacity: With a 15° contact angle and 21 ceramic balls of 6.35mm diameter, the bearing achieves a dynamic load rating of 3780 lbf and static load rating of 3082 lbf, providing reliable performance under combined radial and axial loads.
Phenolic Cage Design: The phenolic resin cage offers excellent strength-to-weight ratio and superior performance at high speeds, contributing to the bearing's overall high-rigidity and stability.
71909 CE/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes requiring ultra-precision bearings
- High-Speed Motors: Electric spindle motors, high-frequency motors, and servo motors demanding high-velocity operation
- Aerospace Systems: Gyroscopes, navigation systems, and aircraft instrumentation requiring precision angular contact bearings
- Medical Equipment: Dental handpieces, surgical tools, and medical imaging devices needing high-speed, precision rotation
- Robotics & Automation: Industrial robots, CNC systems, and precision positioning equipment requiring high-rigidity bearing solutions
