7217 ACD/P4ADGD
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7217 ACD/P4ADGD Bearing Product Overview & Core Advantages
The 7217 ACD/P4ADGD is a precision double row angular contact ball bearing designed for demanding applications requiring high rigidity and exceptional running accuracy. Engineered with a 25° contact angle and a Heavy preload (Class D), it excels at supporting combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, this bearing offers superior dimensional stability and rotational precision, making it an ideal choice for high-speed spindles and other high-performance machinery where reliability is critical.
7217 ACD/P4ADGD Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Double Row Angular Contact Ball Bearing with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class with enhanced running accuracy requirements. |
| D | Signifies a Heavy preload (Class D) for maximum system rigidity. |
| GD | Specifies that the bearing is lubricated from the factory. |
7217 ACD/P4ADGD Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The double row design and Heavy preload provide exceptional stiffness, effectively resisting operational deflections. This robust construction enables the bearing to handle significant combined loads with a high radial dynamic load rating of 35,100 lbf and a radial static load rating of 38,250 lbf.
Optimized for High-Speed Operation: The lightweight and durable phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 17,000 rpm. The standard factory lubrication ensures optimal performance from startup.
Precision Engineering: Adherence to the P4A tolerance class guarantees tight control over bearing dimensions (bore, outside diameter, and width), resulting in smooth, quiet, and precise rotation essential for high-accuracy applications.
Universal Matchability (SU): This bearing is Universal Matchable, allowing two bearings to be mounted in a universal arrangement (O or X) without selective matching, simplifying installation and ensuring predictable performance.
7217 ACD/P4ADGD Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Industrial drives requiring high rigidity and accuracy.
- High-Frequency Motors and Spindles: Applications demanding minimal runout and high rotational speeds.
- Industrial Pumps and Compressors: For robust support under combined loading conditions.
