71917 ACEGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71917 ACEGA/P4A Bearing Product Overview & Core Advantages
The 71917 ACEGA/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and reliability. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and running precision. Its 25° contact angle and extra light preload (Class A) make it ideally suited for applications involving high speeds and combined loads, where both radial and axial forces are present. The bearing comes universally matchable (SU), allowing for precise axial play adjustment when mounted in pairs, ensuring optimal performance and high rigidity in the final assembly.
71917 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 71917: Basic designation indicating a metric angular contact ball bearing with 85mm bore, 120mm OD, and 18mm width
- AC: Angular Contact design
- E: Optimized internal design for enhanced load capacity
- GA: Universal matchable bearing with specific axial clearance
- P4A: High precision tolerance class exceeding ABEC 7 standards
71917 ACEGA/P4A Bearing Structural Features & Performance Benefits
This bearing features a phenolic resin cage that provides excellent dimensional stability and reduced friction at high rotational speeds up to 28,000 rpm. The open seal design allows for efficient lubrication management while maintaining precision. With a radial dynamic load rating of 6,322 lbf and static load rating of 4,860 lbf, it offers reliable performance under significant combined loading conditions. The chrome steel construction of both rings and balls ensures durability and long service life, while the precise bearing dimensions and tight tolerances guarantee consistent performance in precision applications.
71917 ACEGA/P4A Bearing Typical Application Areas
The 71917 ACEGA/P4A finds extensive use in high-precision industrial applications including:
- Machine tool spindles requiring high rotational accuracy and rigidity
- Precision grinding equipment and high-speed machining centers
- Medical equipment and laboratory instruments demanding quiet operation
- Robotics and automation systems where precise motion control is critical
- Aerospace components and navigation systems requiring reliable performance
