7213 CDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7213 CDGB/P4A Bearing Product Overview & Core Advantages
The 7213 CDGB/P4A is a single-row angular contact ball bearing engineered for high-precision applications demanding exceptional rotational accuracy and rigidity. Operating under P4A tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 15° contact angle and Universal Matchable (SU) design enable optimal performance in preloaded arrangements, making it ideal for handling combined radial and axial loads simultaneously. The phenolic cage and precision-ground chrome steel components ensure reliable operation at high speeds up to 32,500 rpm.
7213 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7213 | Basic bearing designation (65mm bore, 120mm OD, 23mm width) |
| CD | 15° contact angle design |
| GB | Universal Matchable (SU) bearing for preloaded arrangements |
| P4A | High precision tolerance class with enhanced running accuracy |
7213 CDGB/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and consistent performance.
High-Speed Capability: The phenolic resin cage and optimized internal geometry enable stable operation at limiting speeds of 32,500 rpm, making it suitable for high-speed spindle applications.
Superior Load Capacity: With a radial dynamic load rating of 14,918 lbf and radial static load rating of 11,925 lbf, this bearing provides reliable performance under significant combined loads.
Universal Matching Design: The Universal Matchable (SU) feature allows for precise preloaded arrangements when used in sets, typically in 4-bearing configurations for maximum system rigidity.
Material Excellence: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and durability in demanding operating conditions.
7213 CDGB/P4A Bearing Typical Application Areas
Machine Tool Spindles: High-precision machining centers and CNC equipment requiring exceptional rotational accuracy and rigidity
Precision Grinding Spindles: Applications demanding minimal runout and thermal stability
High-Speed Motors: Electric motors and spindle drives operating at elevated speeds
Robotic Systems: Industrial robots and automation equipment requiring precise motion control
Medical Equipment: High-speed dental handpieces and medical imaging devices
Aerospace Components: Critical rotating assemblies in aviation and defense applications
