S7015 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7015 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The S7015 ACEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional speed capability and rigidity. Engineered with a 25° contact angle and an extra light preload (Class A), this bearing is optimized for high-speed operation up to 28,000 rpm. Its single, universal matchable (SU) design allows for flexible mounting in sets to handle combined loads, providing robust support for complex applications. The use of ceramic balls and a phenolic cage significantly reduces centrifugal forces and friction, making it an ideal solution for high-performance spindles and precision machinery.
S7015 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7015 | Bearing series and size designation (75mm bore, 115mm OD, 20mm width) | Defines the bearing dimensions and basic series characteristics. |
| AC | 25° Contact Angle | Optimized for handling high axial loads in one direction and radial loads. |
| EGA | Precision Class P4A with Universal Matchable (SU) designation | Guarantees ultra-high precision and allows bearings to be mounted in any combination without loss of preload. |
| HC | Hybrid Ceramic (Silicon Nitride balls with steel rings) | Enables higher speeds, reduced friction, and longer service life. |
| P4A | Tolerance Class (Equivalent to ABEC 7) | Ensures extremely tight dimensional and running accuracy for precision applications. |
S7015 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls reduces weight, minimizes thermal expansion, and allows for operation at higher speeds with less lubrication. This directly contributes to the high limiting speed of 28,000 rpm.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction at high rotational speeds, ensuring smooth operation and reduced wear.
- Precision Ground & Matched: Manufactured to P4A tolerance class and universally matchable (SU), these bearings can be mounted in any combination (back-to-back, face-to-face, or tandem) to create a rigid bearing system capable of handling complex combined loads.
- Sealed & Grease Lubricated: The sealed design with factory-applied grease lubrication protects against contamination and provides long-term, maintenance-free operation within the specified temperature range.
S7015 ACEGA/HCP4A Bearing Typical Application Areas
The S7015 ACEGA/HCP4A is engineered for high-performance applications where speed, precision, and rigidity are critical. Its primary uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and auxiliary power units.
- High-Speed Automation: Robotic arms, CNC tool changers, and precision positioning stages.
