S7013 ACD/P4AQBCC
Sealed Super Precision Angular Contact Ball Bearings
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S7013 ACD/P4AQBCC Bearing Product Overview & Core Advantages
The S7013 ACD/P4AQBCC is a precision quadruplex back-to-back angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched set configuration delivers superior performance in handling combined radial and axial loads simultaneously. Manufactured to P4A tolerance class with a 25° contact angle and preloaded for moderate stiffness (Class C), it is engineered for high-precision, high-reliability machinery where minimal deflection and precise rotational accuracy are critical. The sealed design with grease lubrication ensures long-term, maintenance-free operation.
S7013 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Significance |
|---|---|---|
| S7013 | Basic bearing series designation | High-precision angular contact ball bearing series |
| ACD | Angular Contact, 25° contact angle | Optimized for handling combined loads, particularly axial loads |
| P4A | Precision tolerance class (equivalent to ABEC 7) | Exceptional running accuracy and dimensional stability |
| QBCC | Quadruplex Back-to-Back arrangement, Class C preload | Maximum rigidity and moment load capacity in compact design |
S7013 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
Quadruplex Back-to-Back Configuration: Four bearings arranged in back-to-back pairs create an exceptionally rigid bearing system capable of withstanding heavy moment loads and complex loading conditions. This arrangement provides superior axial and radial stiffness compared to single or duplex bearings.
Enhanced Load Capacity: With a dynamic load rating of 23,400 lbf and static load rating of 31,500 lbf, this bearing set delivers outstanding performance under combined radial and axial loads. The 25° contact angle optimizes axial load carrying capability while maintaining excellent radial load capacity.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls (bore tolerance: -0.004mm to 0, OD tolerance: -0.004mm to 0), ensuring precise shaft positioning and smooth operation. The phenolic cage material provides excellent strength-to-weight ratio and contributes to the limiting speed of 31,000 rpm.
Sealed & Lubricated Design: Factory-sealed with grease lubrication for immediate operation, offering protection against contamination and maintaining optimal performance throughout the operating temperature range of -30°C to 110°C.
S7013 ACD/P4AQBCC Bearing Typical Application Areas
The S7013 ACD/P4AQBCC is ideally suited for high-precision applications requiring maximum rigidity and accuracy:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision milling applications
- Industrial Robotics: Robot arm joints and precision positioning systems
- Aerospace Components: Gyroscopes, navigation systems, and aircraft control mechanisms
- Medical Equipment: High-speed dental handpieces, surgical robots, and imaging systems
- Precision Test Equipment: Coordinate measuring machines and optical inspection systems
- High-Speed Automation: Pick-and-place systems and precision assembly machinery
