7210 CDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7210 CDGC/P4A Bearing Product Overview & Core Advantages
The 7210 CDGC/P4A is a single-row angular contact ball bearing engineered for applications requiring high precision and exceptional rotational accuracy. Positioned in the P4A tolerance class, it delivers superior dimensional stability and running accuracy. Its 15° contact angle is optimized to handle significant combined loads, efficiently supporting both radial and axial loads in one direction. Featuring a phenolic cage and pre-lubrication, this bearing offers excellent high-speed capability up to 41,000 rpm while maintaining moderate preload (Class C) for enhanced rigidity in precision assemblies. As part of a universal matchable (SU) set, it enables flexible mounting configurations for demanding applications.
7210 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 7210 | Basic bearing size: 50mm bore, 90mm OD, 20mm width | Standard metric dimensions for easy integration |
| CD | 15° contact angle design | Optimized for combined radial and axial load capacity |
| GC | Moderate preload (Class C) | Enhanced rigidity and reduced deflection under load |
| P4A | High precision tolerance class | Superior running accuracy and dimensional stability |
7210 CDGC/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration in high-speed applications.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and reduced centrifugal forces, enabling reliable operation at limiting speeds of 41,000 rpm. The optimized 15° contact angle reduces heat generation during high-speed rotation.
Enhanced Load Capacity: With a dynamic radial load rating of 10,102 lbf and static radial load rating of 7,650 lbf, this bearing effectively handles combined loads while maintaining precision. The moderate preload (Class C) increases system rigidity and improves positional accuracy.
Material Excellence: Constructed from chrome steel for both rings and balls, providing superior hardness, wear resistance, and fatigue life. The bearing comes pre-lubricated for immediate operation across a wide temperature range (-30°C to 110°C).
7210 CDGC/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional running accuracy
- High-Speed Motors: Electric motors and generators operating at elevated speeds up to 41,000 rpm
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- Aerospace Components: Aircraft auxiliary systems and navigation equipment
- Medical Equipment: High-speed dental handpieces and surgical tools
- Robotics: Precision joints and articulation points in industrial robots
