7217 ACD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7217 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 7217 ACD/P4ADGB is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This double row angular contact ball bearing is engineered to accommodate combined loads—simultaneous radial and axial loads from both directions—making it ideal for high-precision, high-reliability machinery. Manufactured to P4A tolerance class and featuring a Universal Matchable (SU) design, it ensures superior running accuracy and simplified mounting in preloaded arrangements. The phenolic cage and optimized 25° contact angle contribute to its outstanding high-speed performance and operational stability.
7217 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Designates a 25° contact angle and optimized internal geometry for high axial load capacity. |
| P4A | Indicates a high-precision tolerance class with enhanced dimensional and running accuracy requirements. |
| DGB | Signifies a Universal Matchable (SU) bearing, allowing for flexible mounting in back-to-back (DB) or face-to-face (DF) arrangements without preload loss. |
7217 ACD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness, enabling the bearing to handle significant combined loads. With a radial dynamic load rating of 35,100 lbf and a static load rating of 38,250 lbf, it offers robust performance in demanding conditions.
- High-Speed Capability: The lightweight phenolic cage reduces centrifugal forces, while the precision-ground chrome steel balls and optimized raceway geometry contribute to a high limiting speed of 17,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for ultra-precise applications.
- Universal Matching: The Universal Matchable (SU) feature allows two bearings to be mounted in any preload configuration, simplifying installation and maintaining consistent preload for optimal stiffness and accuracy.
7217 ACD/P4ADGB Bearing Typical Application Areas
This high-precision double row angular contact ball bearing is ideally suited for applications requiring high rigidity, speed, and accuracy, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Motors and Precision Gearboxes
- Industrial Pumps and Compressors
- Robotic Arms and Automation Equipment
- Medical Imaging Devices and Analytical Instruments
