71900 CD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71900 CD/P4A Bearing Product Overview & Core Advantages
The 71900 CD/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and exceptional rotational accuracy. Operating under the stringent P4 (ABEC-7) tolerance class, this bearing is designed to handle significant axial loads in one direction, making it ideal for high-speed spindles and precision machinery. Its compact design, with a 10 mm bore and 6 mm width, provides a space-saving solution without compromising performance. The phenolic cage and optimized 15° contact angle contribute to its superior high-speed capabilities and smooth operation.
71900 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| C | 15° Contact Angle | Optimized for combined radial and axial loads. |
| D | Enhanced Internal Design | Improved load capacity and stiffness. |
| P4A | P4 (ABEC-7) Tolerance Class | Guarantees ultra-precision dimensions and runout for high-accuracy applications. |
71900 CD/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and high running accuracy, providing the stiffness required for demanding applications.
- Superior Load Capacity: The 15° contact angle and optimized internal geometry enable the bearing to efficiently support substantial axial loads in addition to radial loads.
- Exceptional High-Speed Performance: The lightweight phenolic cage and precision-ground chrome steel components are engineered for a high limiting speed of 120,000 rpm, reducing centrifugal forces and heat generation.
- Pre-Lubricated & Ready-to-Use: The bearing comes pre-lubricated, ensuring immediate operation and protection during the initial run-in period.
71900 CD/P4A Bearing Typical Application Areas
The 71900 CD/P4A is ideally suited for high-performance applications where precision and speed are critical. Key industries and equipment include:
- High-Frequency Spindles for PCB drilling and precision machining
- Precision Grinding Spindles
- High-Speed Machine Tool Axes
- Optical Scanners and Encoders
- Medical and Dental Handpiece Drives
