7215 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7215 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7215 CD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This universal matchable (SU) bearing features a 15° contact angle and ceramic ball construction, enabling superior performance under combined radial and axial loads. With its P4A tolerance class and phenolic cage, it delivers outstanding high-speed capability up to 22,000 rpm while maintaining dimensional stability across a wide temperature range (-30°C to 110°C). The bearing comes prelubricated and is supplied as a matched set of two bearings for immediate installation in precision spindle arrangements.
7215 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CD | 15° contact angle, high-precision construction | Optimized for combined loads and high-speed operation |
| HC | Hybrid ceramic balls | Reduced friction, higher speed capability, longer service life |
| P4A | Super precision tolerance class | Exceptional running accuracy and dimensional stability |
| DGA | Universal matchable pair, preloaded | Simplified installation, optimized stiffness in paired arrangements |
7215 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride ceramic balls significantly reduces friction and heat generation, enabling higher limiting speeds while providing excellent corrosion resistance and electrical insulation properties.
Precision Phenolic Cage: The phenolic resin cage offers superior strength-to-weight ratio and excellent dimensional stability at high speeds, contributing to the bearing's 22,000 rpm limiting speed and smooth operation under acceleration.
Universal Matching Design: As a universal matchable (SU) bearing supplied in preloaded pairs, this configuration provides immediate high rigidity and precise axial positioning without requiring additional adjustment during installation.
Super Precision Tolerance: Manufactured to P4A tolerance class with tight bore and outside diameter tolerances (±0.004mm), ensuring minimal runout and vibration for applications demanding extreme rotational accuracy.
7215 CD/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision milling applications
- Industrial Pumps & Compressors: High-speed centrifugal compressors, turbine pumps, and vacuum pumps
- Precision Instrumentation: Medical device manufacturing equipment, semiconductor processing tools, and optical measuring instruments
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units requiring high reliability
- Robotics & Automation: High-precision robotic joints, CNC rotary tables, and automated assembly systems
