S7015 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S7015 CDGA/P4A Bearing Product Overview & Core Advantages
The S7015 CDGA/P4A is a precision angular contact ball bearing designed for high-performance applications. Engineered to the P4A tolerance class, it delivers exceptional running accuracy and dimensional stability. Its 15° contact angle and extra light preload (Class A) make it ideally suited for applications requiring high-speed operation and superior rigidity. As a Universal Matchable (SU) bearing supplied in sets of three, it enables simplified installation and optimized performance in preloaded arrangements, offering a compact solution for handling combined radial and axial loads simultaneously.
S7015 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7015 | Basic bearing series and size designation (75mm bore) |
| C | 15° contact angle design |
| DG | Universal Matchable bearing (can be paired in any combination) |
| A | Extra light preload (Class A) |
| P4A | High precision tolerance class (superior to ABEC 7) |
S7015 CDGA/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A tolerance class with exceptionally tight dimensional tolerances on bore, outside diameter, and width. The phenolic cage and optimized internal geometry contribute to stable operation and high rigidity under load.
Superior Load Capacity: The 15° contact angle design enables efficient handling of combined loads. With a dynamic load rating of 11,858 lbf and static load rating of 11,025 lbf, it provides reliable performance in demanding applications.
High-Speed Capability: The lightweight phenolic cage and precision-ground chrome steel balls (12.7mm diameter) enable operation at limiting speeds up to 28,000 rpm. The grease lubrication is optimized for this high-speed range.
Universal Matching Design: As a Universal Matchable (SU) bearing supplied in sets of three, it allows for flexible mounting configurations and simplified preload adjustment, reducing installation complexity and ensuring optimal performance.
S7015 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring P4A accuracy
- High-Speed Motors: Spindle motors and precision electric motors operating at elevated speeds
- Precision Instrumentation: Medical equipment, measuring devices, and laboratory instruments
- Aerospace Components: Guidance systems, actuators, and auxiliary power units
- Robotics & Automation: High-accuracy robotic joints and precision positioning systems
