7212 CD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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7212 CD/P4ADGB Bearing Product Overview & Core Advantages
The 7212 CD/P4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-loaded pair, it delivers outstanding performance under combined radial and axial loads. Manufactured to a P4A tolerance class, this bearing offers superior running accuracy and is optimized for high-speed operation up to 32,500 rpm, making it an ideal choice for high-performance spindles and precision machinery.
7212 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
- 7212: Basic model number indicating a 60 mm bore, 110 mm OD, and 44 mm width.
- C: Denotes a 15° contact angle, optimized for high-speed applications with moderate axial load capacity.
- D: Indicates the bearing is part of a universally matchable (SU) pair with a specific preload arrangement.
- P4A: Specifies the ultra-precision tolerance class, ensuring extremely tight dimensional and running accuracy.
- DGB: Indicates a light preload (Class B) is applied to the matched pair, providing optimal rigidity and minimizing deflection under operational loads.
7212 CD/P4ADGB Bearing Structural Features & Performance Benefits
This bearing's construction delivers significant performance advantages:
- High Rigidity & Load Capacity: The universal matchable pair (SU) with light preload (Class B) creates a highly rigid system capable of handling significant combined radial and axial loads simultaneously.
- Precision Performance: Manufactured to P4A tolerance standards with a 15° contact angle, it ensures minimal runout and vibration for superior positioning accuracy.
- High-Speed Capability: The phenolic cage and optimized internal geometry enable stable operation at limiting speeds of 32,500 rpm, reducing centrifugal forces and maintaining precision.
- Enhanced Durability: Constructed from chrome steel for both rings and balls, the bearing provides excellent wear resistance and long service life in demanding conditions.
7212 CD/P4ADGB Bearing Typical Application Areas
The 7212 CD/P4ADGB is ideally suited for high-precision applications requiring exceptional speed and accuracy:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Robotics: Articulated arms and high-accuracy positioning systems
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical drill systems
- Industrial Pumps & Compressors: High-speed centrifugal pumps and compressor shafts
