71911 CDTP/P4B
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
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71911 CDTP/P4B Bearing Product Overview & Core Advantages
The 71911 CDTP/P4B is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to P4 (ABEC-7) tolerance class, this bearing is optimized to handle significant combined loads (radial and axial) simultaneously. Its 15° contact angle provides superior axial load capacity while maintaining high-speed performance. The phenolic cage and precision-ground components contribute to its high rigidity and smooth operation, making it an ideal solution for machine tool spindles and other demanding precision machinery.
71911 CDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71911 | Basic bearing designation indicating size series and bore diameter (55mm) |
| C | 15° contact angle design |
| D | High-precision manufacturing standard |
| T | Phenolic (synthetic resin) cage material |
| P | Preload class designation |
| P4B | P4 (ABEC-7) tolerance class with specific running accuracy requirements |
71911 CDTP/P4B Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4 tolerance class with bore and outside diameter tolerances of -0.007mm to 0, ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 15° contact angle enables efficient handling of combined radial and axial loads, with dynamic load rating of 4388 lbf and static load rating of 3285 lbf.
High-Speed Performance: The phenolic cage provides excellent strength-to-weight ratio, contributing to the limiting speed of 16,000 rpm while maintaining dimensional stability.
Thermal Stability: Chrome steel construction and phenolic cage material ensure consistent performance across the operating temperature range of -30° to 110°C.
Preload Capability: Designed for preload applications, enhancing system rigidity and rotational accuracy in precision machinery.
71911 CDTP/P4B Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding machines
- Precision Instrumentation: Measuring equipment and optical instruments requiring minimal runout
- High-Speed Motors: Spindle motors and high-frequency applications
- Medical Equipment: Dental handpieces and surgical tools
- Aerospace Components: Guidance systems and precision actuators
