7213 ACDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7213 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7213 ACDGC/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to a P4A tolerance class, it offers superior running accuracy and dimensional stability. This bearing is optimized to accommodate combined loads, efficiently handling both radial and significant axial loads in one direction, making it ideal for high-speed, high-precision spindles and machine tools. Its moderate preload (Class C) ensures optimal stiffness and rotational precision right from installation.
7213 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7213 | Basic bearing designation: 65mm bore, 120mm OD, 23mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGC | Universal Matchable (SU) bearing, designed to be paired in sets (3 bearings in a set) to achieve specific preload and stiffness characteristics. |
| P4A | High precision tolerance class, exceeding ABEC-7 standards, ensuring minimal runout and vibration for superior performance. |
7213 ACDGC/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The angular contact design and moderate preload provide exceptional system rigidity, minimizing deflection under load for superior machining accuracy. Manufactured to P4A tolerances, it guarantees precise shaft positioning.
Superior Load Capacity: With a 25° contact angle, this bearing is engineered to support high combined loads, offering a dynamic load rating of 14,332 lbf and a static load rating of 11,475 lbf.
Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, enabling a high limiting speed of 32,500 rpm. This makes it an excellent choice for high-speed spindle applications.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be universally paired with other bearings of the same designation in any combination, simplifying installation and achieving the desired preload in a set of three.
7213 ACDGC/P4A Bearing Typical Application Areas
The 7213 ACDGC/P4A is ideally suited for high-performance machinery requiring precision and speed, including:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
