7013 ACD/P4AQBCA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7013 ACD/P4AQBCA Bearing Product Overview & Core Advantages
The 7013 ACD/P4AQBCA is a precision quadruplex matched angular contact ball bearing engineered for demanding applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing is specifically designed to handle combined loads, offering superior performance in high-speed, high-precision environments. Its back-to-back quadruplex arrangement (QBC) provides maximum stiffness and moment load capacity, making it an ideal solution for machine tool spindles and other precision rotary systems. The extra light preload (Class A) ensures smooth operation with minimal running torque, while the phenolic cage contributes to its high limiting speed of 31,000 rpm.
7013 ACD/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing designation (65mm bore, 100mm OD) |
| ACD | Angular Contact design with 25° contact angle |
| P4A | High precision tolerance class (superior to ABEC 7) |
| QBC | Quadruplex Back-to-Back matched arrangement |
7013 ACD/P4AQBCA Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The quadruplex back-to-back configuration creates an exceptionally rigid bearing system capable of withstanding heavy combined radial and axial loads while providing superior resistance to moment loads. With a radial dynamic load rating of 23,400 lbf and static load rating of 31,500 lbf, this bearing delivers reliable performance under demanding conditions.
High-Speed Performance: The phenolic cage material and optimized internal geometry enable operation at limiting speeds up to 31,000 rpm. The 25° contact angle provides excellent axial load capacity while maintaining high-speed capability.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for precision applications. The extra light preload (Class A) reduces friction and heat generation while maintaining positional accuracy.
Material Quality: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance and durability. The 20 precision balls with 11.112 mm diameter ensure smooth operation and load distribution.
7013 ACD/P4AQBCA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring maximum rigidity and precision
- Precision Rotary Tables: Indexing and positioning systems demanding high accuracy and stiffness
- High-Speed Machining Centers: Applications requiring superior dynamic performance and thermal stability
- Robotic Systems: Precision joints and rotary actuators needing high load capacity and accuracy
- Aerospace Components: Critical rotating assemblies where reliability and precision are paramount
