S7015 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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S7015 ACB/HCP4A Bearing Product Overview & Core Advantages
The S7015 ACB/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and high-speed capability. This single-row bearing features a 25° contact angle and is supplied with a preload, delivering superior rigidity and precise running accuracy. Manufactured to a P4 (ABEC-7) tolerance class, it is an ideal solution for machine tool spindles and other high-performance machinery where combination loads must be managed with maximum reliability.
S7015 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7015 | Denotes the bearing series and size (75mm bore, 115mm OD, 20mm width). |
| ACB | Indicates a specific internal design with a 25° contact angle and preload for high rigidity. |
| HCP4A | Specifies the P4 (ABEC-7) tolerance class and the use of hybrid ceramic balls (silicon nitride) for enhanced speed and longevity. |
S7015 ACB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables a higher limiting speed of 17,000 rpm. This also provides improved resistance to wear and electrical arcing.
- High Rigidity & Precision: The 25° contact angle and applied preload ensure minimal axial and radial deflection under load, resulting in exceptional stiffness for precise positioning and smooth operation.
- Optimized Cage Design: The phenolic resin cage is lightweight and strong, contributing to lower vibration and quieter operation at high speeds. It offers excellent performance under the specified temperature range of -30°C to 110°C.
- Superior Load Capacity: With a dynamic load rating of 4275 lbf and a static load rating of 3735 lbf, this bearing is designed to handle significant combination loads (radial and axial) simultaneously.
S7015 ACB/HCP4A Bearing Typical Application Areas
This high-performance bearing is specifically designed for applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: High-speed measuring and testing equipment.
- High-Frequency Motors & Spindles: Motors for PCB drilling and routing.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
