S71909 ACEGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71909 ACEGB/P4A Bearing Product Overview & Core Advantages
The S71909 ACEGB/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional accuracy and reliability. Operating under a light preload (Class B), this bearing is designed to accommodate primarily axial loads in one direction while also handling combined radial and axial loads. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-speed spindles and precision machinery. The bearing features a sealed design with phenolic cage construction, contributing to its high-speed capability and stable performance across a wide temperature range.
S71909 ACEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| AC | 25° Contact Angle | Optimized for axial load capacity while maintaining radial load capability |
| EGB | Universal Matchable (SU) bearing in set of 2 | Enables precise bearing arrangements without selective mounting |
| P4A | Super Precision Tolerance Class | Exceptional running accuracy and dimensional stability for high-precision applications |
S71909 ACEGB/P4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4A tolerance class with bore diameter tolerance of -0.004mm to 0 and outside diameter tolerance of -0.004mm to 0, ensuring minimal runout and vibration for superior rotational accuracy.
Optimized Load Capacity: With a 25° contact angle, this bearing delivers excellent axial load capacity (2194 lbf dynamic, 1440 lbf static) while effectively handling combined loads, making it suitable for applications requiring precise axial positioning.
High-Speed Performance: The phenolic cage material and precision-ground chrome steel components enable operation at limiting speeds up to 41,000 rpm, while the sealed design retains lubrication and protects against contamination.
Universal Matching Capability: As a Universal Matchable (SU) bearing supplied in matched sets of 2, these bearings can be arranged in back-to-back, face-to-face, or tandem configurations without selective mounting, simplifying installation and ensuring optimal preload conditions.
S71909 ACEGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes requiring P4A accuracy
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Motors: Spindle motors, high-frequency motors, and precision drive systems
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Aerospace Components: Guidance systems, actuators, and precision positioning mechanisms
