71900 CE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71900 CE/P4A Bearing Product Overview & Core Advantages
The 71900 CE/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and high-speed performance. Engineered to a P4 (ABEC-7) tolerance class, it is ideally suited for machine tool spindles, precision instruments, and other demanding equipment. Its key advantage lies in its ability to support combined loads, efficiently handling both radial and substantial axial loads in one direction due to its defined 15° contact angle. The phenolic resin cage and preloaded configuration contribute to smooth operation, low noise, and high rigidity, making it a reliable choice for high-performance systems.
71900 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71900 | Basic bearing series designation for a miniature, metric angular contact ball bearing. |
| C | Designates a 15° contact angle, optimized for high-speed operation. |
| E | Indicates an optimized internal design, often for improved performance and load capacity. |
| /P4A | Specifies the tolerance class P4 (ABEC-7) and that the bearing is supplied with a specific preload (A). This ensures high running accuracy and rigidity. |
71900 CE/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to a P4 tolerance class with a preload, this bearing delivers extremely high running accuracy and system stiffness, minimizing deflection under load.
- Superior High-Speed Capability: The lightweight phenolic resin cage and optimized internal geometry, including the 15° contact angle, enable stable operation at the high limiting speed of 155,000 rpm.
- Optimized Load Capacity: The angular contact design is engineered to support significant combined loads, making it highly effective for applications with simultaneous radial and one-direction axial forces.
- Ready-to-Use Performance: The bearing is supplied lubricated and ready for installation, facilitating quick assembly and immediate operation.
71900 CE/P4A Bearing Typical Application Areas
The 71900 CE/P4A is a critical component in high-precision, high-speed machinery. Its primary applications include:
- Machine Tool Spindles (High-speed milling, grinding, and drilling)
- Precision Instrumentation and Optical Encoders
- High-Frequency Motors and Spindles
- Medical and Dental Handpieces
- Aerospace Gyroscopes and Navigation Systems
