S7015 CD/P4ATBTA
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7015 CD/P4ATBTA Bearing Product Overview & Core Advantages
The S7015 CD/P4ATBTA is a super-precision angular contact ball bearing designed for the most demanding applications. This triplex back-to-back (TBT) matched set delivers exceptional system rigidity and rotational accuracy. Engineered to a P4A tolerance class, it is optimized for high-speed operation up to 28,000 rpm while simultaneously handling significant combined radial and axial loads. Its phenolic cage and pre-greased configuration ensure reliable performance in high-precision spindles and other critical machinery.
S7015 CD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
- S7015: Series designation for a 75mm bore, 115mm OD super-precision bearing.
- C: 15° contact angle, optimized for high-speed performance.
- D: Indicates a duplex bearing (in this context, part of a triplex set).
- P4A: Tolerance class denoting extremely high running accuracy and dimensional precision.
- TBT: Triplex Back-to-Back arrangement, providing maximum rigidity and moment load capacity.
- A: Extra light preload, ideal for minimizing heat generation at ultra-high speeds.
S7015 CD/P4ATBTA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The triplex back-to-back configuration creates an exceptionally stiff bearing system, capable of withstanding heavy combined loads and significant moment loads. This is critical for maintaining machining accuracy under cutting forces.
High-Speed Capability: The combination of a 15° contact angle, a lightweight phenolic resin cage, and extra light preload (Class A) minimizes friction and heat generation, enabling stable operation at the limiting speed of 28,000 rpm.
Precision Engineering: Manufactured to P4A tolerance class with tight bore, outside diameter, and width tolerances, this bearing ensures minimal runout and superior rotational accuracy for applications requiring the highest levels of precision.
Optimized Material Selection: The use of high-grade chrome steel for rings and balls, combined with a phenolic cage, provides excellent durability and dimensional stability under high-speed and high-temperature conditions.
S7015 CD/P4ATBTA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications where maximum rigidity, speed, and precision are non-negotiable. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and machining cells.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision instrumentation.
- High-Frequency Motors: Spindles for PCB drilling and other micro-machining applications.
