71903 CDGC/P4A
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 CDGC/P4A Bearing Product Overview & Core Advantages
The 71903 CDGC/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and moderate preload. Operating under P4A tolerance class, it delivers exceptional dimensional accuracy and running precision. This bearing is specifically engineered to handle combined loads, primarily carrying axial loads in one direction while supporting substantial radial loads. Its compact design with a 7mm width makes it ideal for space-constrained, high-performance applications demanding superior rotational accuracy and reliability.
71903 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71903 | Basic bearing designation indicating size series and bore diameter |
| C | 15° contact angle design |
| DG | Universal matching designation for precise bearing arrangement |
| C | Moderate preload (Class C) |
| P4A | High precision tolerance class with enhanced dimensional control |
71903 CDGC/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and dimensional stability.
Optimized Load Capacity: The 15° contact angle configuration provides optimal performance for combined loads, with a radial dynamic load rating of 936 lbf and static rating of 468 lbf.
High-Speed Capability: Features a phenolic cage that enables superior performance at limiting speeds up to 80,000 rpm, reducing friction and heat generation.
Universal Matching Design: Designed as Universal Matchable (SU), allowing precise bearing arrangements in sets of 4 for optimal preload and stiffness control.
Premium Material Construction: Utilizes chrome steel for both rings and balls, providing excellent wear resistance and durability across a temperature range of -30°C to 110°C.
71903 CDGC/P4A Bearing Typical Application Areas
- Machine tool spindles requiring high precision and moderate preload
- High-speed machining centers and precision grinding equipment
- Medical equipment and dental handpieces
- Aerospace components and instrumentation systems
- Robotic joints and precision automation equipment
- Optical positioning systems and measuring instruments
