71911 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71911 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71911 CD/P4ADGA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. As a universal matchable (SU) bearing supplied in pre-matched pairs, it delivers superior rotational precision and stiffness. Its P4A tolerance class ensures extremely tight dimensional control, making it ideal for high-speed spindles and precision machinery. The bearing is pre-lubricated and features an open design optimized for controlled lubrication systems, offering excellent performance within a temperature range of -30°C to 110°C.
71911 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
| 71911 | Basic bearing series designation |
| CD | Contact angle of 15° |
| P4A | High precision tolerance class |
| DGA | Universal matchable pair (SU designation) |
71911 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and runout control.
Optimized Contact Design: Features a 15° contact angle with extra light preload (Class A), providing optimal balance between stiffness and low operating temperature at high speeds.
Advanced Cage Technology: Utilizes a phenolic resin cage that offers excellent strength-to-weight ratio, reduced friction, and superior performance at the limiting speed of 34,000 rpm.
Superior Load Capacity: With a radial dynamic load rating of 7,020 lbf and radial static load rating of 6,525 lbf, this bearing handles combined loads effectively while maintaining precision.
Premium Material Selection: Constructed from chrome steel for both rings and balls, ensuring high hardness, wear resistance, and long service life.
71911 CD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Motors: Servo motors, spindle motors, and high-frequency drives
- Aerospace Components: Gyroscopes, navigation systems, and aircraft instrumentation
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
