7008 CE/P4ADGA
7000 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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7008 CE/P4ADGA Bearing Product Overview & Core Advantages
The 7008 CE/P4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running precision. Its universal matchable (SU) design allows for flexible mounting in various configurations, including back-to-back or face-to-face arrangements, to optimize performance for specific load conditions. The combination of a 15° contact angle and extra light preload (Class A) makes it ideal for applications requiring high-speed operation and precise axial positioning.
7008 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series with 40mm bore, 68mm OD, 30mm width |
| CE | Contact angle of 15° |
| P4A | High precision tolerance class with enhanced running accuracy |
| DGA | Universal matchable bearing (SU designation) |
7008 CE/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with tight dimensional control (bore tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 15° contact angle provides excellent performance for combined radial and axial loads, with dynamic load rating of 4478 lbf and static load rating of 3442 lbf.
High-Speed Performance: Features a phenolic cage and optimized internal geometry, enabling a limiting speed of 56,000 rpm for demanding high-speed applications.
Universal Matching Capability: The SU (Universal Matchable) design allows for flexible arrangement of two bearings to create optimized bearing sets for specific preload and stiffness requirements.
Premium Material Selection: Constructed from chrome steel for both rings and balls, providing high durability and wear resistance with 19 precision balls of 7.144mm diameter.
7008 CE/P4ADGA Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for:
- Machine Tool Spindles - High-speed machining centers and precision grinding applications
- High-Speed Motors - Electric motors and spindles requiring precise rotational accuracy
- Precision Instrumentation - Medical equipment, measuring devices, and optical systems
- Aerospace Components - Guidance systems and auxiliary power units
- Robotics - Joint actuators and precision positioning mechanisms
