7211 CD/P4AQBCC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7211 CD/P4AQBCC Bearing Product Overview & Core Advantages
The 7211 CD/P4AQBCC is a precision quadruplex back-to-back angular contact ball bearing designed for applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing is preloaded and matched as a set of four to deliver superior performance under combined radial and axial loads. Its moderate preload (Class C) and phenolic cage contribute to high-speed capability and stable operation in demanding industrial environments.
7211 CD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
| 7211 | Basic bearing series with 55mm bore, 100mm OD |
| CD | Contact angle of 15° with optimized internal design |
| P4A | High precision tolerance class with enhanced running accuracy |
| QBCC | Quadruplex Back-to-Back arrangement with Moderate (Class C) preload |
7211 CD/P4AQBCC Bearing Structural Features & Performance Benefits
Exceptional Rigidity: The quadruplex back-to-back configuration provides maximum stiffness against moment loads and shaft deflection, making it ideal for precision applications requiring minimal deformation.
High Load Capacity: With a dynamic load rating of 32,850 lbf and static load rating of 38,250 lbf, this bearing set handles significant combined radial and axial loads simultaneously.
Optimized High-Speed Performance: The phenolic cage material and 15° contact angle enable operation at limiting speeds up to 34,000 rpm, while the matched set ensures balanced performance across all four bearings.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional control on bore, OD, and width, ensuring consistent performance in high-accuracy applications.
7211 CD/P4AQBCC Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- High-Speed Industrial Pumps - Chemical processing and water treatment pumps
- Precision Gearboxes - Industrial automation and robotics drive systems
- Aerospace Components - Actuators and control surface mechanisms
- Medical Equipment - High-speed dental handpieces and surgical tools
