7211 ACD/P4ATGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7211 ACD/P4ATGB Bearing Product Overview & Core Advantages
The 7211 ACD/P4ATGB is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This universal matchable (SU) bearing features a 25° contact angle and light preload (Class B), enabling it to handle combined radial and axial loads simultaneously with high stability. Manufactured to P4A tolerance class, it delivers superior running accuracy and is supplied pre-lubricated for immediate use. Its compact design and high rigidity make it an ideal solution for high-speed spindles and precision machinery.
7211 ACD/P4ATGB Bearing Model Code Explained, Specifications & Naming Convention
- 7211: Basic designation indicating a metric angular contact ball bearing with 55mm bore, 100mm OD, and 63mm width.
- ACD: 25° contact angle and optimized internal geometry for high-speed operation.
- P4A: High-precision tolerance class with enhanced dimensional and running accuracy requirements.
- TGB: Designates the phenolic resin cage, offering excellent strength-to-weight ratio and reduced friction at high speeds.
7211 ACD/P4ATGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The optimized internal design with a 25° contact angle provides superior stiffness and enables the bearing to support significant combined loads. The radial dynamic load rating of 25,650 lbf and static load rating of 27,450 lbf ensure reliable performance under demanding conditions.
High-Speed Performance: The lightweight phenolic cage (TGB) minimizes centrifugal forces, while the precision-ground chrome steel balls and raceways contribute to a high limiting speed of 34,000 rpm. The universal matchable (SU) design allows for flexible mounting configurations in multi-bearing arrangements.
Precision & Reliability: Manufactured to P4A tolerance standards with tight dimensional controls, this bearing ensures minimal runout and vibration. The pre-lubrication facilitates immediate startup and reliable initial operation.
7211 ACD/P4ATGB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles
- Precision Industrial Pumps & Compressors
- High-Frequency Motors & Spindles
- Aerospace & Defense Actuation Systems
- Medical Equipment & Precision Instruments
