7213 CD/P4ADGA
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 CD/P4ADGA Bearing Product Overview & Core Advantages
The 7213 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 15° contact angle and universal matchable (SU) design enable it to handle combined loads efficiently while maintaining high rigidity. The phenolic cage and optimized internal geometry contribute to its excellent high-speed capabilities, making it ideal for precision machinery requiring reliable operation under demanding conditions.
7213 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Significance |
|---|---|---|
| 7213 | Basic bearing series with 65mm bore, 120mm OD | Standard dimension reference |
| CD | 15° contact angle, universal matchable design | Optimized for combined radial and axial loads |
| P4A | High precision tolerance class | Superior running accuracy and dimensional stability |
| DGA | Extra light preload (Class A) | Minimal friction, ideal for high-speed applications |
7213 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with tight dimensional controls (bore tolerance: -0.004mm to 0, OD tolerance: -0.004mm to 0) ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 15° contact angle and precision-ground raceways provide excellent combined load handling with dynamic load rating of 24,300 lbf and static load rating of 23,850 lbf.
High-Speed Performance: The phenolic cage and optimized internal geometry enable operation at limiting speeds up to 32,500 rpm, making it suitable for demanding high-speed applications.
Universal Matching Capability: The SU designation allows for flexible bearing arrangements in pairs or sets, providing design engineers with versatile mounting options for precise preload control.
Premium Material Selection: Constructed from chrome steel for both rings and balls (15.875mm diameter, 15 balls), ensuring durability and long service life in precision applications.
7213 CD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional accuracy
- High-Speed Motors: Electric motors and generators operating at elevated speeds
- Precision Instrumentation: Measuring equipment and optical devices demanding minimal runout
- Aerospace Systems: Aircraft components and navigation systems requiring reliable high-speed operation
- Medical Equipment: Dental handpieces and surgical tools where precision and reliability are critical
- Robotics and Automation: Precision robotic joints and automated positioning systems
