71909 CE/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71909 CE/P4ADGA Bearing Product Overview & Core Advantages
The 71909 CE/P4ADGA is a super-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed performance. Operating under the stringent P4A tolerance class, this bearing is designed to handle combined loads efficiently, providing robust support for both radial and axial forces. Its extra light preload (Class A) ensures minimal friction and smooth operation, making it ideal for high-precision spindles and other critical machinery where high rigidity and operational reliability are paramount. The bearing is universally matchable (SU), allowing for flexible mounting arrangements in pairs to accommodate complex load scenarios.
71909 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Contact angle of 15° and enhanced internal design for optimized performance. |
| P4A | Indicates a super-precision tolerance class with tight dimensional and running accuracy specifications. |
| DGA | Specifies the bearing is universally matchable (SU) and supplied as part of a matched set of 2 bearings, pre-configured for optimal performance when mounted in pairs. |
71909 CE/P4ADGA Bearing Structural Features & Performance Benefits
The performance of the 71909 CE/P4ADGA is driven by its advanced construction. The 15° contact angle is optimized for high-speed operation while effectively managing axial loads. The phenolic resin cage contributes to low friction, high strength, and excellent dimensional stability at high rotational speeds, directly supporting the impressive limiting speed of 41,000 rpm. Manufactured from high-grade chrome steel for both rings and balls, the bearing ensures long-term durability and resistance to wear. The extra light preload minimizes heat generation and ensures smooth, precise rotation, which is critical for maintaining accuracy in high-speed applications. With a radial dynamic load rating of 3780 lbf and a static load rating of 3082 lbf, it offers reliable performance under demanding operational conditions.
71909 CE/P4ADGA Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications where speed and accuracy are non-negotiable. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- High-Speed Motors and Spindles used in the aerospace and semiconductor manufacturing sectors.
- Medical Equipment: Dental handpieces and advanced imaging devices.
