7213 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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7213 CD/HCP4A Bearing Product Overview & Core Advantages
The 7213 CD/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered with ceramic balls and manufactured to P4 (ABEC-7) tolerance class, it delivers superior performance in high-speed and high-stability environments. Its single-row design with a 15° contact angle is optimized to handle combined radial and axial loads simultaneously, making it an ideal solution for precision spindles and other critical machinery components.
7213 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7213 | Basic bearing series, 65mm bore, 120mm OD, 23mm width |
| CD | High contact angle design optimized for high rigidity |
| HC | Hybrid Ceramic construction with ceramic balls |
| P4A | P4 (ABEC-7) precision class with specific running accuracy requirements |
7213 CD/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (22,000 rpm) and extended service life.
High Rigidity & Load Capacity: The optimized 15° contact angle and precision-ground raceways provide excellent stiffness, capable of handling substantial combined loads (Radial dynamic: 14,918 lbf, Static: 11,925 lbf).
Precision & Stability: Manufactured to P4 tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and consistent performance under high-speed operation.
Preload & Temperature Performance: Designed for preload applications, it maintains precise shaft positioning. The temperature range of -30°C to 110°C ensures reliability across various operating conditions.
7213 CD/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles
- High-Speed Motors: Servo motors and spindle drives requiring minimal runout
- Precision Instrumentation: Medical equipment, optical scanners, and measuring devices
- Aerospace & Defense: Gyroscopes, radar systems, and navigation equipment
- Robotics: High-precision robotic arm joints and rotary actuators
