7015 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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7015 CEGA/HCP4A Bearing Product Overview & Core Advantages
The 7015 CEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered as a single bearing with an extra light preload (Class A) and manufactured to P4A super-precision tolerance, it delivers superior running accuracy, low noise, and low vibration. Its 15° contact angle is optimized for handling combined loads, particularly high-speed applications with significant axial loads. The use of ceramic balls and a phenolic cage contributes to its high limiting speed and excellent performance under challenging conditions.
7015 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Standard bearing series designation, indicating bore diameter of 75 mm and a specific cross-section. |
| CE | Indicates a 15° contact angle, optimized for high-speed operation and axial load capacity. |
| GA | Signifies the bearing is supplied with an extra light preload (Class A) for minimal friction and high-speed capability. |
| HCP4A | Denotes the bearing's tolerance class. "HC" refers to the hybrid ceramic construction, and P4A is a super-precision grade with enhanced dimensional and running accuracy tolerances. |
7015 CEGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of steel rings and ceramic balls (Si3N4) significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds. This design also offers improved stiffness and longer service life, especially in lubricant-starved conditions.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent guidance of the ceramic balls, contributing to smooth operation and high-speed stability with minimal friction.
Super-Precision P4A Tolerance: Manufactured to the strictest P4A tolerance class, this bearing guarantees exceptional dimensional stability and running accuracy, which is critical for applications requiring high positional precision and low vibration.
High Load Capacity: With a dynamic load rating of 5850 lbf and a static load rating of 4860 lbf, the bearing is capable of handling significant combined radial and axial loads.
Universal Matchable (SU): This bearing is universally matchable, allowing for flexible arrangement in sets (e.g., duplex pairs) to achieve specific preload and rigidity requirements without selective mounting.
7015 CEGA/HCP4A Bearing Typical Application Areas
The 7015 CEGA/HCP4A is ideally suited for high-performance machinery where speed, precision, and reliability are paramount. Key application areas include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Motors and Turbomachinery
- Aerospace and Defense Systems
- Medical and Dental Equipment Spindles
- Semiconductor Manufacturing Equipment
