7212 ACDGA/VQ253
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7212 ACDGA/VQ253 Bearing Product Overview & Core Advantages
The 7212 ACDGA/VQ253 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. Engineered to accommodate combined loads (simultaneous radial and axial loads), this bearing features a 25° contact angle for optimal axial load capacity. Manufactured to P4A tolerance class, it delivers superior running accuracy and is universally matchable (SU), allowing for precise preload control when mounted in sets. Its compact design and high-performance construction make it ideal for high-speed, high-rigidity applications.
7212 ACDGA/VQ253 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 7212 | Basic bearing series; 60mm bore, 110mm OD, 22mm width. |
| AC | Angular Contact design. |
| D | High contact angle (25°). |
| GA | Precision preload classification (Extra light / Class A). |
| /VQ253 | Specific vendor designation for universal matching (SU) and lubrication. |
7212 ACDGA/VQ253 Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 25° contact angle provides excellent resistance to combined loads, ensuring stable operation under demanding conditions. The phenolic cage contributes to smooth operation at high speeds.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional tolerances on bore, outside diameter, and width, this bearing guarantees high running accuracy and minimal vibration.
High-Speed Capability: The lightweight phenolic cage and optimized internal geometry enable a high limiting speed of 36,000 rpm, making it suitable for high-speed spindles and machinery.
Universal Matching: Designated as Universal Matchable (SU), these bearings can be supplied in pre-matched sets (typically 3 bearings) to achieve precise preload and optimal stiffness without additional selection or machining.
7212 ACDGA/VQ253 Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Rotary Tables
