7008 FE/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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7008 FE/P4ADGA Bearing Product Overview & Core Advantages
The 7008 FE/P4ADGA is a precision angular contact ball bearing manufactured to P4A tolerance class for exceptional dimensional accuracy and running precision. Engineered with an 18° contact angle and Universal Matchable (SU) design, this bearing is optimized to handle combined loads—simultaneously supporting significant radial and axial forces. Its extra light preload (Class A) ensures smooth, quiet operation with minimal friction, making it ideal for high-speed applications requiring superior rotational accuracy and rigidity.
7008 FE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| FE | Precision Machined Brass Cage | Enhanced stability and guidance at high speeds |
| P4A | High Precision Tolerance Class | Superior running accuracy and dimensional control |
| DGA | Universal Matchable (SU) Arrangement | Simplified mounting in preloaded pairs for high rigidity |
7008 FE/P4ADGA Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: The 18° contact angle and precision-ground raceways provide optimal load distribution, enabling excellent performance under combined radial and axial loads.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at the limiting speed of 43,000 rpm, reducing centrifugal forces and maintaining stability.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore: -0.004mm to 0, OD: -0.004mm to 0), ensuring consistent performance in precision applications.
Universal Matching Design: As a Universal Matchable (SU) bearing, two units can be readily paired in back-to-back or face-to-face arrangements to create a preloaded set that delivers enhanced stiffness and accuracy.
7008 FE/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring high rigidity and running accuracy
- High-Speed Motors: Electric motors and spindles operating at elevated speeds up to 43,000 rpm
- Precision Instrumentation: Measuring equipment and laboratory instruments demanding minimal vibration and exact positioning
- Aerospace Systems: Guidance systems and auxiliary drives where reliability and precision are critical
- Medical Equipment: High-speed dental handpieces and surgical tools requiring smooth, precise rotation
