71903 CE/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71903 CE/P4ADGA Bearing Product Overview & Core Advantages
The 71903 CE/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, while the extra light preload (Class A) minimizes friction for optimal high-speed operation. This bearing is pre-lubricated and ready for installation, making it an ideal choice for high-reliability, precision machinery.
71903 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71903 | Basic bearing series and size designation (17mm bore, 30mm OD) |
| CE | Contact angle of 15°, optimized for combined loads |
| P4A | High precision tolerance class for superior running accuracy |
| DGA | Universal matchable (SU) designation for paired mounting |
71903 CE/P4ADGA Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage and optimized internal geometry enable stable operation at limiting speeds up to 80,000 rpm, making it ideal for high-speed spindles.
Precision Performance: Manufactured to P4A tolerance standards with tight dimensional control on bore, outside diameter, and width, ensuring minimal runout and vibration.
Combined Load Capacity: The 15° contact angle allows the bearing to effectively handle both radial and axial loads simultaneously.
Universal Matching: The SU universal match feature permits flexible arrangement of two bearings in various preload configurations (back-to-back, face-to-face, or tandem) without selective assembly.
Material Quality: Constructed from chrome steel for rings and balls, providing high hardness, wear resistance, and long service life.
71903 CE/P4ADGA Bearing Typical Application Areas
- Machine tool spindles and high-precision machining centers
- High-speed motors and precision grinding applications
- Medical equipment and dental handpieces
- Aerospace components and instrumentation
- Precision robotics and automation systems
