7012 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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7012 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 7012 CDGA/HCP4A is a single row angular contact ball bearing engineered for ultra-high precision and high-speed performance. Designed with a 15° contact angle and manufactured to P4A super precision tolerance, this bearing excels in applications requiring exceptional running accuracy and rigidity. Its ceramic ball construction and phenolic cage contribute to superior high-speed capabilities and reduced friction. As a Universal Matchable (SU) bearing supplied in sets of three, it enables precise preload configurations for optimal system performance, making it ideal for demanding machine tool and precision equipment applications.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7012 | Basic bearing series with 60mm bore and 95mm outside diameter |
| C | 15° contact angle design |
| DG | Universal matching bearing designation |
| A | Extra light preload classification |
| HCP4A | Hybrid ceramic construction with P4A super precision tolerance |
7012 CDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls provides exceptional high-speed performance with reduced centrifugal forces and improved thermal stability. This configuration significantly extends bearing service life in demanding applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore diameter tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration for precision machinery requirements.
Optimized Cage Design: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at limiting speeds up to 34,000 rpm, making it ideal for high-speed spindle applications.
Universal Matching Capability: Supplied as universally matchable bearings in sets of three, allowing for precise preload adjustment and optimal performance in paired arrangements without selective mounting.
7012 CDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- High-Speed Motors: Electric motor spindles and high-frequency applications requiring ceramic hybrid technology
- Precision Instruments: Measuring equipment, optical systems, and laboratory instrumentation
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
