7202 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7202 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 7202 CDGA/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Engineered with ceramic balls and manufactured to P4A tolerance class, this bearing delivers superior speed capabilities and extended service life. Its 15° contact angle is optimized to handle combined loads efficiently, making it an ideal solution for high-rigidity, high-speed spindle systems. The bearing is pre-lubricated and comes as part of a universally matchable set, ensuring ease of installation and consistent performance in demanding operational environments.
7202 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series designation with 15mm bore diameter |
| C | 15° contact angle design |
| DG | Universal matching designation (Duplex Universal) |
| A | Extra light preload classification |
| HCP4A | High precision tolerance class (P4A) with enhanced running accuracy |
7202 CDGA/HCP4A Bearing Structural Features & Performance Benefits
Advanced Material Composition: The combination of chrome steel rings with ceramic balls significantly reduces friction and heat generation, enabling the bearing to achieve exceptional limiting speeds up to 95,000 rpm. The ceramic balls provide superior wear resistance and electrical insulation properties.
Precision Engineering: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, critical for high-speed applications. The phenolic cage offers excellent dimensional stability and reduced weight, contributing to higher rotational speeds and smoother operation.
Optimized Load Capacity: With a 15° contact angle, the bearing efficiently handles combined radial and axial loads. The universal matching capability allows for precise preload control when mounted in pairs, delivering enhanced system rigidity and positioning accuracy.
Thermal Performance: The bearing operates effectively across a wide temperature range from -30°C to 110°C, maintaining stable performance under varying thermal conditions.
7202 CDGA/HCP4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles - CNC machining centers, grinding spindles
- Precision Medical Equipment - Dental handpieces, surgical tools
- Aerospace Components - Gyroscopes, navigation systems
- Semiconductor Manufacturing - Wafer handling robots, precision stages
- Laboratory Instruments - Centrifuges, analytical equipment
- High-Frequency Motors - Spindle motors, high-RPM drives
