71907 ACEGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71907 ACEGB/P4A Bearing Product Overview & Core Advantages
The 71907 ACEGB/P4A is a single row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Operating under the stringent P4A tolerance class, this bearing is designed to handle significant axial loads in one direction and combined loads efficiently. Its light preload (Class B) ensures minimal deflection and smooth operation, making it ideal for high-speed spindles and precision machinery where rigidity and accuracy are paramount. The bearing comes pre-lubricated and is part of a universally matchable (SU) set, allowing for flexible mounting configurations to achieve optimal preload and stiffness.
71907 ACEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| EGB | Optimized internal geometry and light preload (Class B) for enhanced stiffness and low noise operation. |
| P4A | Indicates a high precision tolerance class with tight dimensional and running accuracy tolerances. |
71907 ACEGB/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class with a light preload, this bearing provides exceptional running accuracy and minimizes system deflection under load, ensuring high positional stability.
- Superior Load Capacity: The 25° contact angle and robust construction enable it to carry high axial loads in one direction and combined (radial and axial) loads effectively.
- Optimized High-Speed Performance: The phenolic resin cage is lightweight and durable, contributing to lower centrifugal forces and allowing for a high limiting speed of 56,000 rpm. The standard lubrication further supports reliable high-speed operation.
- Universal Matching Capability (SU): As a universally matchable bearing, two identical bearings can be mounted in various arrangements (back-to-back, face-to-face, or tandem) to precisely control preload and system rigidity.
71907 ACEGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Equipment
- Aerospace Control Systems
