S7011 ACE/P4AQBCB
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
S7011 ACE/P4AQBCB Bearing Product Overview & Core Advantages
The S7011 ACE/P4AQBCB is a super-precision angular contact ball bearing designed for the most demanding applications. As part of a quadruplex back-to-back (QBC) matched set, it delivers exceptional system rigidity and rotational accuracy. This bearing is engineered to handle combined radial and axial loads simultaneously, making it ideal for high-speed spindles and other precision machinery where maximum stiffness and minimal runout are critical. Its P4A tolerance class and light preload (Class B) ensure superior performance and reliability in high-precision environments.
S7011 ACE/P4AQBCB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7011 | Basic bearing series and size designation (55mm bore, 90mm OD, 72mm width) |
| ACE | Designates a 25° contact angle and specific internal design optimized for high-speed operation |
| P4A | Indicates super-precision tolerance class (exceeding ABEC 7/ISO P4), ensuring extremely tight dimensional and running accuracy |
| QBC | Specifies Quadruplex Back-to-Back arrangement in a matched set of 4 bearings, providing maximum system rigidity |
S7011 ACE/P4AQBCB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The quadruplex back-to-back configuration creates an extremely rigid bearing system capable of withstanding heavy combined loads and moments. The 25° contact angle is optimized for handling significant axial loads in both directions while maintaining excellent radial load capacity.
Super-Precision Performance: Manufactured to P4A tolerance class standards, this bearing delivers exceptional running accuracy with minimal vibration. The tight dimensional tolerances on bore diameter, outside diameter, and width ensure precise fit and optimal performance in precision applications.
High-Speed Capability: The phenolic cage material provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling high-speed operation up to 34,000 rpm. The optimized internal geometry further enhances high-speed performance.
Sealed & Lubricated Design: As a sealed bearing with factory-applied grease lubrication, it offers protection against contamination and is ready for immediate installation without additional lubrication requirements.
S7011 ACE/P4AQBCB Bearing Typical Application Areas
The S7011 ACE/P4AQBCB is specifically designed for high-performance applications requiring ultimate precision and rigidity:
- Machine Tool Spindles - High-speed milling, grinding, and turning centers
- Precision Robotics - High-accuracy robotic arms and CNC automation
- Aerospace Components - Gyroscopes, navigation systems, and flight control mechanisms
- Medical Equipment - High-speed dental handpieces and surgical tools
- Test & Measurement Instruments - Coordinate measuring machines and optical inspection systems
