71913 ACD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71913 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 71913 ACD/P4ADGB is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4A tolerance class, this bearing is optimized to handle combined loads, accommodating significant axial loads in one direction alongside radial loads. Its universal matchable (SU) design allows two bearings to be paired in a back-to-back or face-to-face arrangement, providing enhanced system stability and flexibility. The phenolic cage and light preload (Class B) contribute to its suitability for high-speed operation, making it an ideal component for demanding, precision-driven machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing series and size designation. |
| AC | Angular Contact design with a 25° contact angle. |
| D | High internal design and dimensional optimization. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards for running accuracy. |
| D | Modification code for enhanced performance characteristics. |
| GB | Indicates the bearing is lubricated with a specific grease suitable for the specified temperature range. |
71913 ACD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and universal matchable (SU) feature enable the bearing to achieve high system rigidity when paired. It is rated for a dynamic load of 7178 lbf and a static load of 7200 lbf, effectively handling combined radial and axial loads.
- Optimized High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces and friction, supporting a high limiting speed of 36,000 rpm. The 25° contact angle provides an excellent balance between axial load capacity and speed capability.
- Precision Engineering: Manufactured to a P4A tolerance class with tight dimensional controls on the bore, outside diameter, and width, ensuring predictable performance and minimal runout in precision assemblies.
- Ready-to-Install: The bearing is pre-lubricated, facilitating immediate installation and initial operation within its designated temperature range of -30°C to 110°C.
71913 ACD/P4ADGB Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for applications where high speed, accuracy, and rigidity are critical. Typical uses include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
