S7015 CD/P4AQBCA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7015 CD/P4AQBCA Bearing Product Overview & Core Advantages
The S7015 CD/P4AQBCA is a precision angular contact ball bearing configured as a Quadruplex Back-to-Back (QBC) matched set. Engineered to the exacting P4A tolerance class, this bearing is designed for applications demanding exceptional rotational accuracy, high system rigidity, and the ability to handle combined loads. Its 15° contact angle and quadruplex arrangement provide superior axial and moment load capacity, making it an ideal choice for high-performance, high-stability spindles and precision machinery where uncompromising reliability is paramount.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7015 | Precision bearing series with 75 mm bore diameter. |
| CD | 15° nominal contact angle. |
| P4A | High precision tolerance class (superior to ABEC 7). |
| QBC | Quadruplex Back-to-Back matched arrangement. |
| Sealed | Integrated seals to retain lubricant and exclude contaminants. |
S7015 CD/P4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The Quadruplex Back-to-Back (QBC) arrangement creates a highly rigid bearing system capable of supporting heavy combined loads (radial and axial) and significant overturning moments. The Extra light preload (Class A) ensures precise shaft positioning and minimizes runout.
- High-Speed Capability: The phenolic cage offers low weight and excellent performance at high rotational speeds, contributing to the bearing's limiting speed of 28,000 rpm. The optimized internal geometry further enhances high-speed performance.
- Precision and Longevity: Manufactured to P4A tolerance class from high-grade chrome steel, this bearing guarantees minimal vibration and consistent performance. The sealed design with pre-applied grease lubrication protects against contamination and provides long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S7015 CD/P4AQBCA Bearing Typical Application Areas
This precision bearing is ideally suited for high-demand applications, including:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Machining Centers
- Advanced Robotics and Automation
- Aerospace and Defense Actuation Systems
