7211 CDGB/P4A
7200 & 7300 Series 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
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7211 CDGB/P4A Bearing Product Overview & Core Advantages
The 7211 CDGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under a Light preload (Class B), this bearing is optimized to handle combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and other precision machinery. Its universal matchable (SU) design allows for flexible mounting in sets to accommodate complex load requirements.
7211 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 7211: Basic bearing series, indicating a 55mm bore, 100mm OD, and 21mm width.
- C: Denotes a 15° contact angle, optimized for high-speed applications with significant axial loads.
- D: Indicates the bearing is supplied with a Light preload (Class B) for enhanced rigidity.
- GB: Signifies the bearing is Universal Matchable (SU) and can be mounted in sets (back-to-back, face-to-face, or tandem) without shimming.
- P4A: Specifies the super-precision tolerance class, exceeding ABEC 7 standards for superior running accuracy.
7211 CDGB/P4A Bearing Structural Features & Performance Benefits
The 7211 CDGB/P4A's construction delivers distinct performance advantages:
- High Rigidity & Precision: The angular contact design with a 15° contact angle and factory-set light preload provides superior system stiffness and minimizes deflection under load, critical for machining accuracy.
- Optimized Load Capacity: Engineered to support combined loads effectively, with a dynamic load rating of 12,442 lbf and a static load rating of 9,675 lbf.
- Superior High-Speed Performance: The phenolic resin cage offers low mass and excellent performance at the limiting speed of 34,000 rpm, reducing centrifugal forces and friction.
- Precision Materials: Components made from chrome steel ensure high hardness, wear resistance, and dimensional stability across the operating temperature range of -30°C to 110°C.
7211 CDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and High-Frequency Motors.
- Medical Equipment: CT scanners and dental drill handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and avionics.
