71907 CE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71907 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The 71907 CE/HCP4AQBCA is a high-precision angular contact ball bearing configured as a quadruplex matched set in back-to-back arrangement. Engineered for exceptional performance in demanding applications, this bearing set features ceramic balls and P4A super precision tolerances. Its specialized design enables superior handling of combined radial and axial loads while maintaining exceptional rotational accuracy and thermal stability. The quadruplex back-to-back configuration provides maximum rigidity and moment load capacity, making it ideal for high-speed, high-precision spindle applications where minimal deflection is critical.
71907 CE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 71907 | Basic bearing designation (35mm bore, 55mm OD, 40mm width) | Standardized dimension reference |
| CE | Contact angle 15° | Optimized for combined radial and axial loading |
| HC | Hybrid ceramic balls | Reduced centrifugal forces, higher speed capability |
| P4A | Super precision tolerance class | Exceptional running accuracy and dimensional stability |
| QBC | Quadruplex Back-to-Back arrangement | Maximum system rigidity and moment load capacity |
Structural Features & Performance Advantages
Hybrid Ceramic Construction: The combination of chrome steel rings with ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds (56,000 rpm) while maintaining dimensional stability under thermal expansion.
Quadruplex Back-to-Back Configuration: Four bearings precisely matched and preloaded in back-to-back arrangement deliver exceptional system rigidity and superior moment load resistance. This configuration minimizes axial and radial play, ensuring precise rotational accuracy.
Phenolic Cage Design: The lightweight phenolic resin cage provides excellent strength-to-weight ratio, reduced friction, and superior performance at high rotational speeds.
P4A Super Precision: With bore and outside diameter tolerances of -0.004mm to 0, this bearing set delivers exceptional running accuracy and minimal vibration, critical for precision machining applications.
Preload Optimization: The extra light preload (Class A) ensures smooth operation while maintaining sufficient stiffness for high-precision applications.
71907 CE/HCP4AQBCA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles - CNC machining centers, grinding spindles
- Precision Medical Equipment - Dental handpieces, surgical tools
- Aerospace Components - Gyroscopes, navigation systems
- Semiconductor Manufacturing - Wafer processing equipment
- High-Frequency Spindles - PCB drilling, micromachining
- Laboratory Instruments - Centrifuges, analytical equipment
