7008 CEGA/P4AH1
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7008 CEGA/P4AH1 Bearing Product Overview & Core Advantages
The 7008 CEGA/P4AH1 is a single-row angular contact ball bearing designed for applications requiring high precision and superior performance. This bearing features a 15° contact angle and P4A tolerance class, making it ideal for handling combined radial and axial loads with exceptional accuracy. Its extra light preload (Class A) ensures minimal friction and smooth operation, while the universal matchable (SU) design allows for flexible mounting arrangements. The phenolic cage contributes to its high-speed capability, with a limiting speed of 56,000 rpm.
7008 CEGA/P4AH1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series with 40mm bore, 68mm OD, 15mm width |
| CE | Enhanced internal design with 15° contact angle |
| GA | Universal matchable bearing for flexible mounting |
| P4A | High precision tolerance class with extra light preload |
| H1 | Pre-lubricated with specific high-performance grease |
7008 CEGA/P4AH1 Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
High-Speed Performance: The phenolic resin cage provides excellent strength-to-weight ratio, enabling stable operation at 56,000 rpm limiting speed while reducing centrifugal forces.
Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing effectively handles combined radial and axial loads (dynamic rating: 2790 lbf, static rating: 1721 lbf).
Thermal Stability: The phenolic cage and chrome steel construction maintain dimensional stability across the operating temperature range of -30°C to 110°C.
Universal Matching: Designed as universal matchable (SU) bearings, they can be paired in various configurations to meet specific application requirements.
7008 CEGA/P4AH1 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles
- Precision Instrumentation: Measuring equipment and optical devices
- High-Speed Motors: Servo motors and spindle drives
- Aerospace Systems: Guidance systems and aircraft instrumentation
- Medical Equipment: Dental handpieces and laboratory automation
- Robotics: Precision joints and positioning systems
