7202 CDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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7202 CDGB/HCP4A Bearing Product Overview & Core Advantages
The 7202 CDGB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Its defining characteristic is the Universal Matchable (SU) designation, allowing two identical bearings to be mounted in a back-to-back (DB) or face-to-face (DF) arrangement to support combined loads effectively. Manufactured to an exceptionally tight P4A tolerance class, it features a 15° contact angle and a light preload (Class B), making it an ideal solution for high-speed spindles and other precision machinery requiring high rigidity and minimal runout.
7202 CDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7202 | Basic bearing series and size designation | 15 mm bore, 35 mm OD, 11 mm width |
| C | 15° nominal contact angle | Optimized for combined radial and axial loads |
| DGB | Universal Matchable bearing set (Back-to-back arrangement) | Enables precise axial and moment load capacity when paired |
| HC | Hybrid Ceramic construction | Ceramic balls for reduced friction, higher speed, and longer life |
| P4A | High precision tolerance class | Exceeds ABEC-7 standards for superior running accuracy |
7202 CDGB/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The use of ceramic balls with a chrome steel ring significantly reduces friction and heat generation, enabling a limiting speed of 95,000 rpm. This construction also provides electrical insulation and enhanced durability.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable operation at ultra-high speeds, contributing to the bearing's exceptional dynamic performance.
Precision Engineering: The P4A tolerance class and light preload guarantee minimal vibration and precise shaft positioning, which is critical for applications requiring high rotational accuracy.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be paired with an identical unit to form a pre-loaded duplex set, dramatically increasing system rigidity and its ability to handle complex combined loads and moments.
7202 CDGB/HCP4A Bearing Typical Application Areas
The 7202 CDGB/HCP4A is specifically designed for high-performance applications, including:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace Control Systems
- Medical and Dental Handpiece Drives
- Advanced Robotics and Automation
