71913 CE/P4A
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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71913 CE/P4A Bearing Product Overview & Core Advantages
The 71913 CE/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to accommodate combined loads (radial and axial) in one direction, this bearing features a 15° contact angle for optimal axial load capacity. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running accuracy, making it ideal for high-speed spindles and precision machinery where minimal runout and vibration are critical.
71913 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing series designation, indicating a high-precision angular contact bearing with 65mm bore, 90mm OD, and 13mm width. |
| CE | Contact angle designation: 15° contact angle for balanced radial and axial load capacity. |
| P4A | Tolerance class: P4 (ABEC-7) precision grade with specific running accuracy requirements. The "A" suffix indicates special dimensional and running accuracy tolerances. |
71913 CE/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4 tolerance class with strict dimensional controls (bore tolerance: -0.007mm to 0), this bearing ensures minimal vibration and superior running accuracy. The phenolic cage provides excellent dimensional stability and reduced weight.
Optimized Load Capacity: With a 15° contact angle design, the 71913 CE/P4A efficiently handles combined radial and axial loads. The radial dynamic load rating of 3712 lbf and static load rating of 2745 lbf demonstrate its robust performance capability.
High-Speed Performance: The phenolic resin cage and optimized internal geometry enable limiting speeds up to 31,000 rpm, making it suitable for high-speed spindle applications.
Precision Materials: Constructed from chrome steel for both rings and balls, ensuring high hardness, wear resistance, and long service life under demanding conditions.
71913 CE/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- Precision Instruments: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Motors: Servo motors, spindle motors, and high-frequency applications
- Aerospace Components: Gyroscopes, navigation systems, and aircraft instrumentation
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
