71919 CDGB/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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71919 CDGB/P4A Bearing Product Overview & Core Advantages
The 71919 CDGB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Designed to accommodate primarily radial loads combined with axial loads in one direction, this bearing features a 15° contact angle and P4A tolerance class for exceptional dimensional and rotational precision. Its light preload (Class B) ensures minimal deflection under operational stresses, making it ideal for high-speed spindles and precision machinery where rigidity and accuracy are critical.
71919 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing series, indicating a single-row angular contact design with specific dimensions (95mm bore, 130mm OD, 18mm width) |
| C | 15° contact angle design |
| D | High-precision phenolic resin cage |
| G | Universal Matchable (SU) designation for precise bearing pairing |
| B | Light preload (Class B) |
| P4A | Ultra-precision tolerance class exceeding ABEC 7 standards |
71919 CDGB/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy for critical applications.
High-Speed Capability: The phenolic resin cage and optimized internal geometry enable a limiting speed of 16,000 rpm, making it suitable for high-speed spindle applications.
Superior Load Capacity: With a dynamic load rating of 11,115 lbf and static load rating of 12,375 lbf, this bearing delivers reliable performance under combined radial and axial loads.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be precisely paired with another identical bearing to form a matched set for applications requiring preload control and enhanced stiffness.
Material Excellence: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and durability across a temperature range of -30°C to 110°C.
71919 CDGB/P4A Bearing Typical Application Areas
The 71919 CDGB/P4A is specifically designed for high-precision applications including:
- Machine tool spindles requiring ultra-precision and high-speed operation
- Precision grinding machines where dimensional accuracy is critical
- High-speed machining centers demanding superior running accuracy
- Industrial robotics and automation equipment
- Medical equipment and precision instruments
- Aerospace components requiring reliable high-speed performance
