7015 FE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7015 FE/HCP4A Bearing Product Overview & Core Advantages
The 7015 FE/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4A super-precision tolerance class, it is ideally suited for high-speed spindles and other precision machinery. Its key advantage lies in its ability to accommodate combined radial and axial loads simultaneously, thanks to its specific contact angle of 18°. The use of a phenolic resin cage and ceramic balls contributes to lower friction, higher limiting speeds, and superior performance in demanding operational environments.
7015 FE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Standard bearing series designation, indicating a 75mm bore, 115mm OD, and 20mm width. |
| FE | Indicates a preloaded bearing, optimized for high rigidity and minimal axial/radial play. |
| HC | Refers to the hybrid ceramic construction, featuring steel rings and ceramic balls for enhanced performance. |
| P4A | Denotes an ABEC 7 / ISO P4A super-precision tolerance class, ensuring extremely tight dimensional and running accuracy. |
7015 FE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4A tolerance class and built-in preload (FE) ensure exceptional running accuracy and system stiffness, critical for applications like machine tool spindles.
- Superior High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic balls reduces centrifugal forces, enabling a high limiting speed of 28,000 rpm.
- Enhanced Durability and Life: Ceramic balls are harder, lighter, and more resistant to wear and thermal deformation than steel, leading to extended bearing service life, especially under high-speed and high-temperature conditions.
- Optimized for Matched Sets: This bearing is supplied as a single bearing but is commonly used in matched sets of 3 (as indicated in the specifications) to form a rigid, preloaded arrangement capable of handling complex load combinations.
7015 FE/HCP4A Bearing Typical Application Areas
The 7015 FE/HCP4A is engineered for the most demanding precision applications, including:
- High-Speed Machine Tool Spindles (CNC milling, grinding, and turning centers)
- Precision Robotic Drives and Gearboxes
- High-Frequency Motors and Spindles
- Advanced Medical and Dental Equipment
- Aerospace Instrumentation and Control Systems
