71936 CDGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 71936 CDGA/P4A is a single-row angular contact ball bearing designed for ultra-precision applications requiring exceptional rotational accuracy and rigidity. Operating under P4A tolerance class with extra light preload (Class A), this bearing delivers superior running precision and minimal vibration. Its 15° contact angle and universal matching capability (SU) enable optimal performance in complex arrangements, making it ideal for machine tool spindles and other high-precision rotating systems where combination loads must be handled with maximum reliability.
71936 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Impact |
|---|---|---|
| 71936 | Basic bearing designation (180mm bore, 250mm OD) | Defines core dimensions and capacity |
| C | 15° contact angle | Optimized for combined radial and axial loads |
| DG | Universal matching designation | Enables flexible bearing arrangements |
| A | Extra light preload (Class A) | Minimizes friction while maintaining rigidity |
| P4A | Ultra-precision tolerance class | Ensures exceptional running accuracy and stability |
Structural Features and Performance Benefits
Precision Engineering: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy.
High Rigidity Design: Features 27 chrome steel balls with 22.225mm diameter arranged in a single-row angular contact configuration with 15° contact angle, providing optimal stiffness for demanding applications.
Superior Load Capacity: Rated for 37,800 lbf dynamic and 47,700 lbf static radial loads, capable of handling significant combination loads while maintaining precision.
High-Speed Performance: The phenolic cage and optimized internal geometry enable operation at 11,000 rpm limiting speed, making it suitable for high-speed spindle applications.
Thermal Stability: Operating temperature range from -30°C to 110°C with factory-applied lubrication, ensuring consistent performance across varied operating conditions.
71936 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling applications
- Precision Instrumentation: Measuring equipment, optical systems, and laboratory instruments
- High-Speed Rotating Machinery: Industrial pumps, compressors, and specialized drives
- Aerospace Components: Guidance systems, aircraft instrumentation, and satellite mechanisms
- Medical Equipment: High-speed dental handpieces, surgical tools, and diagnostic imaging systems
