71805 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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71805 CD/P4DGA Bearing Product Overview & Core Advantages
The 71805 CD/P4DGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4 tolerance class, this bearing features a universal matchable (SU) design, allowing two bearings to be paired in a universal arrangement for optimal preload and rigidity. Its 15° contact angle is engineered to handle significant combined loads, efficiently supporting both radial and axial forces. The phenolic cage and premium chrome steel construction contribute to its high-speed capability and long service life, making it an ideal solution for high-precision machinery.
71805 CD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71805 | Basic bearing series and size designation (25mm bore, 37mm OD). |
| CD | Indicates a 15° contact angle and is designed for universal matching (SU). |
| P4 | Denotes a high-precision tolerance class for applications requiring minimal runout and vibration. |
| DGA | Signifies the bearing is lubricated and supplied as part of a universally matched pair (2 bearings). |
71805 CD/P4DGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and universal matching capability allow for precise preload setting, resulting in a very stiff bearing arrangement capable of withstanding combined radial and axial loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and 15° contact angle enable a high limiting speed of 103,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class with tight dimensional control on the bore, outside diameter, and width, ensuring minimal runout and superior rotational accuracy for precision applications.
- Durable Construction: Made from high-grade chrome steel for both rings and balls, providing excellent wear resistance and long-term dimensional stability.
71805 CD/P4DGA Bearing Typical Application Areas
The 71805 CD/P4DGA is ideally suited for high-performance applications where precision and speed are critical. Common uses include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Handpieces
- Aerospace Control Systems
- High-Speed Robotic Drives
