S7013 ACD/PA9AQBCC
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7013 ACD/PA9AQBCC Bearing Product Overview & Core Advantages
The S7013 ACD/PA9AQBCC is a precision quadruplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched set of four bearings in a back-to-back (QBC) arrangement provides superior stability and can accommodate combined loads (radial and axial) from both directions simultaneously. Engineered with a PA9A tolerance class and a 25° contact angle, it delivers high running accuracy and is optimized for high-speed operation up to 31,000 rpm, making it ideal for high-performance machinery requiring maximum reliability.
S7013 ACD/PA9AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7013 | Basic bearing series designation |
| ACD | Angular Contact Design with a 25° contact angle |
| PA9A | High-Precision Tolerance Class (PA9A), ensuring minimal dimensional runout |
| QBCC | Quadruplex Back-to-Back (QBC) Matched Set, pre-configured for optimal load distribution and stiffness |
S7013 ACD/PA9AQBCC Bearing Structural Features & Performance Benefits
Exceptional Rigidity: The quadruplex back-to-back arrangement creates an extremely rigid bearing system, effectively resisting moment loads and maintaining shaft positioning under heavy combined loads.
High Load Capacity: With a dynamic load rating of 23,400 lbf and a static load rating of 31,500 lbf, this bearing set is built to handle significant radial and bidirectional axial forces.
Optimized High-Speed Performance: The phenolic resin cage offers low weight and high strength, contributing to smooth operation at the limiting speed of 31,000 rpm. The standard grease lubrication is suitable for the specified high-speed range.
Precision Engineering: Manufactured to PA9A tolerance class with tight bore and outside diameter tolerances, this bearing ensures high running accuracy and minimal vibration for precision applications.
S7013 ACD/PA9AQBCC Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is ideally suited for demanding applications such as:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Gearboxes and Robotic Drives
- High-Frequency Motors and Spindle Drives
- Aerospace Actuation Systems
- Medical and Laboratory Centrifuges
