71919 ACD/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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71919 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 71919 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a universally matchable (SU) bearing supplied in a set of two, it enables optimized preload configurations when mounted in pairs. Its P4A tolerance class ensures ultra-precise running accuracy, while the extra light preload (Class A) minimizes friction and heat generation. This bearing excels in handling combined loads with its 25° contact angle, providing robust performance in high-speed, high-precision environments.
71919 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | 25° contact angle design for optimal axial load capacity |
| P4A | High precision tolerance class with enhanced running accuracy |
| DGA | Universal matchable bearing set (two bearings) with extra light preload |
71919 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy.
Optimized Load Capacity: The 25° contact angle enables efficient handling of combined radial and axial loads, with dynamic load rating of 17,122 lbf and static load rating of 23,400 lbf.
High-Speed Performance: The phenolic cage and precision engineering allow for a limiting speed of 16,000 rpm, making it ideal for high-speed applications.
Universal Matching Capability: As universally matchable bearings supplied in sets of two, they can be arranged in various configurations to achieve optimal preload and stiffness.
Premium Material Selection: Constructed from chrome steel rings and balls with phenolic cage, providing excellent durability and performance across a temperature range of -30°C to 110°C.
71919 ACD/P4ADGA Bearing Typical Application Areas
- Machine tool spindles requiring high precision and rigidity
- High-speed machining centers and precision grinding machines
- Industrial pumps and compressors demanding reliable performance
- Precision instruments and measuring equipment
- Aerospace components and robotics applications
- Medical equipment requiring quiet, precise operation
