71907 CEGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71907 CEGB/P4A Bearing Product Overview & Core Advantages
The 71907 CEGB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Manufactured to the stringent P4A tolerance class, this bearing is designed to accommodate combined loads (radial and axial) simultaneously, with a 15° contact angle optimized for high axial load capacity. Its universal matchable (SU) design allows for flexible mounting in pairs to handle bidirectional axial loads, while the phenolic cage and light preload (Class B) contribute to smooth, quiet operation at high speeds, making it an ideal choice for high-rigidity and high-speed spindle arrangements.
71907 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71907 | Bearing series and size designation | Indicates a metric, single-row angular contact bearing with a 35mm bore, 55mm OD, and 10mm width. |
| C | 15° contact angle | Optimized for high axial load capacity while maintaining good radial load performance. |
| E | Optimized internal design | Enhanced internal geometry for improved performance and load rating. |
| GB | Light preload (Class B) | Reduces internal clearance for increased rigidity and precise shaft positioning, ideal for high-speed applications. |
| P4A | Tolerance class | Denotes super-precision tolerances for bore, outer diameter, and width, ensuring exceptional running accuracy and minimal vibration. |
71907 CEGB/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: The P4A tolerance class and light preload ensure minimal runout and high system rigidity, critical for applications requiring extreme positional accuracy. The tight dimensional tolerances on the bearing bore, outside diameter, and width guarantee consistent performance.
Superior Load Capacity: The 15° contact angle and optimized internal design enable the bearing to handle significant combined loads. With a radial dynamic load rating of 1755 lbf and a radial static load rating of 1046 lbf, it provides reliable performance under demanding conditions.
High-Speed Capability: The lightweight phenolic resin cage offers excellent dimensional stability and low friction, contributing to a high limiting speed of 56,000 rpm. The open seal design minimizes friction for maximum speed potential.
Universal Matching (SU): As a Universal Matchable bearing, two 71907 CEGB/P4A bearings can be mounted together in various configurations (back-to-back, face-to-face, or tandem) to create a matched set that manages complex load scenarios and bidirectional axial thrust.
71907 CEGB/P4A Bearing Typical Application Areas
The 71907 CEGB/P4A is specified for high-performance machinery where precision and speed are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving machines, and high-frequency motors.
- Robotics: High-accuracy rotary joints and arm actuators.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
