7213 ACD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7213 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 7213 ACD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-set pair, it excels at handling combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it offers superior running accuracy and is optimized for high-speed operation up to 36,000 rpm, making it an ideal choice for high-performance spindles and precision machinery.
7213 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| 7213 | Basic designation: 65 mm bore, 120 mm OD, 46 mm width |
| AC | Angular Contact design with 25° contact angle |
| D | Two bearings in a Universal Matchable (SU) set |
| P4A | High precision tolerance class (exceeds ABEC 7) |
| DGB | Universal match mounting with Light preload (Class B) |
7213 ACD/P4ADGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double bearing arrangement and 25° contact angle provide superior stiffness, enabling the bearing to handle significant combined loads (radial dynamic load rating: 23,400 lbf, static: 22,950 lbf).
Precision Performance: Manufactured to P4A tolerance standards with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
High-Speed Capability: The phenolic cage and optimized internal geometry allow for limiting speeds of 36,000 rpm, making it suitable for demanding high-speed applications.
Thermal Stability: The phenolic cage material maintains dimensional stability across the operating temperature range (-30°C to 110°C), ensuring consistent performance.
7213 ACD/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- High-Speed Motors - Industrial spindles and servo motors
- Precision Instrumentation - Medical equipment and measuring devices
- Aerospace Components - Guidance systems and auxiliary power units
- Robotics - High-accuracy robotic arm joints and positioning systems
