7212 CD/P4ADGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
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7212 CD/P4ADGA Bearing Product Overview & Core Advantages
The 7212 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running precision. Its universal matchable (SU) design allows two bearings to be mounted in any combination (face-to-face or back-to-back) to optimize system performance for specific load and rigidity requirements. The extra light preload (Class A) minimizes friction and heat generation, making it ideal for high-speed applications up to 32,500 rpm, while its robust construction provides excellent capacity for handling combined radial and axial loads.
7212 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7212 | Basic bearing series, indicating a 60 mm bore, 110 mm OD, and 44 mm width. |
| CD | Contact angle of 15° and universal matchable (SU) design. |
| P4A | High precision tolerance class for superior dimensional and running accuracy. |
| DGA | Indicates extra light preload (Class A) for minimal running torque and high-speed capability. |
7212 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design and phenolic cage provide a robust structure capable of withstanding significant combined loads. With a dynamic load rating of 21,060 lbf and static load rating of 20,925 lbf, it offers reliable performance under demanding conditions.
Optimized High-Speed Performance: The lightweight phenolic cage and 15° contact angle are engineered for high-speed operation, enabling a limiting speed of 32,500 rpm. The extra light preload further reduces friction and heat buildup at these elevated speeds.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls on the bore, outside diameter, and width, this bearing ensures precise shaft positioning and smooth, vibration-free rotation.
Universal Matching Capability: The Universal Matchable (SU) feature allows for flexible arrangement of two bearings to create a pre-loaded set, providing designers with optimized solutions for specific stiffness and moment load requirements.
7212 CD/P4ADGA Bearing Typical Application Areas
The 7212 CD/P4ADGA is ideally suited for high-precision, high-speed machinery including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
- Medical and Laboratory Equipment
