7008 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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7008 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7008 ACDGA/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Manufactured to P4A tolerance class, this bearing delivers exceptional dimensional stability and rotational precision. Its 25° contact angle provides optimal performance for combined loads, effectively handling both radial and axial forces. The phenolic cage and universal matching capability make it ideal for high-speed spindle arrangements and precision machinery requiring rigid support and reliable operation.
7008 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| AC | Angular Contact Design | Optimized for combined radial and axial loads |
| DGA | Universal Matchable (SU) with Extra Light Preload | Enables precise bearing arrangements with minimal preload |
| P4A | High Precision Tolerance Class | Superior running accuracy and dimensional stability |
7008 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: The P4A tolerance class ensures minimal dimensional variation, providing exceptional running accuracy critical for precision applications. The bore diameter tolerance of -0.004mm to 0 and outside diameter tolerance of -0.004mm to 0 guarantee precise fit and optimal performance.
Optimized Load Capacity: With a 25° contact angle, this bearing efficiently handles combined loads, featuring a radial dynamic load rating of 3578 lbf and radial static load rating of 2340 lbf. The chrome steel construction of both rings and balls ensures durability under demanding conditions.
High-Speed Performance: The phenolic cage material and optimized internal geometry enable a limiting speed of 56,000 rpm, making it suitable for high-speed applications. The 18 precision balls with 7.938 mm diameter provide smooth operation and reduced vibration.
Universal Matching Capability: Designed as Universal Matchable (SU) bearings, they can be arranged in sets of three to achieve specific preload and stiffness requirements, offering flexibility in precision machine design.
7008 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Motors - Spindle motors and high-RPM drive systems
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Guidance systems and precision actuators
- Robotics - Precision joints and positioning systems
