7003 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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7003 CE/P4ADGA Bearing Product Overview & Core Advantages
The 7003 CE/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Engineered with P4A tolerance class and extra light preload (Class A), this bearing delivers superior running accuracy and minimal vibration. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs, enabling optimal performance in high-precision spindle applications. The phenolic cage and optimized 15° contact angle contribute to outstanding high-speed capabilities while maintaining dimensional stability.
7003 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CE | Contact angle designation (15°) | Optimized for combined radial and axial loads |
| P4A | Super precision tolerance class | Exceptional running accuracy and minimal runout |
| DGA | Universal match pairing designation | Flexible mounting in back-to-back or face-to-face arrangements |
7003 CE/P4ADGA Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and reduced centrifugal forces, enabling operation at limiting speeds up to 115,000 rpm. The optimized ball diameter (5.556 mm) and 12-ball configuration ensure smooth rotation under high centrifugal forces.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls (bore tolerance: -0.004mm to 0, OD tolerance: -0.004mm to 0), this bearing guarantees minimal vibration and exceptional running accuracy for precision applications.
Load Capacity: With a 15° contact angle and chrome steel construction, the bearing efficiently handles combined radial and axial loads while maintaining high rigidity. The radial dynamic load rating of 2,151 lbf and static load rating of 1,148 lbf ensure reliable performance in demanding conditions.
Thermal Stability: The phenolic cage and lubricated design provide stable operation across a wide temperature range (-30°C to 110°C), making it suitable for various industrial environments.
7003 CE/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- High-Speed Motors: Precision electric motors, spindle motors, and high-frequency applications
- Medical Equipment: Dental handpieces, laboratory centrifuges, and medical imaging devices
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling equipment, precision positioning stages
