71807 ACD/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71807 ACD/P4 Bearing Product Overview & Core Advantages
The 71807 ACD/P4 is a single-row angular contact ball bearing designed for applications requiring high precision and superior performance. As a P4 (ABEC-7) tolerance class bearing, it delivers exceptional running accuracy. Its key advantage lies in its ability to support combined loads—simultaneously handling significant radial loads and axial loads in one direction. The bearing is preloaded and comes lubricated from the factory, ensuring immediate operational readiness, high rigidity, and optimal performance in high-speed applications up to 40,000 rpm.
71807 ACD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71807 | Basic bearing series and size designation (35mm bore, 47mm OD, 7mm width). |
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| D | Signifies a high-capacity internal design, typically indicating a larger ball complement (26 balls) for increased load rating. |
| P4 | Denotes the ultra-precision tolerance class (ABEC-7), ensuring minimal runout and vibration for demanding applications. |
71807 ACD/P4 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance standards with a phenolic resin cage, this bearing ensures minimal dimensional variation and stable operation, contributing to superior system rigidity and accuracy.
- Optimized Load Capacity: The 25° contact angle and high-capacity "D" design with 26 balls enable it to handle substantial combined radial and axial loads efficiently.
- Superior High-Speed Performance: The lightweight phenolic cage is ideal for high-speed operation (limiting speed of 40,000 rpm), reducing centrifugal forces and friction. The phenolic material also offers excellent performance in lubricated environments.
- Ready-to-Install: The bearing is supplied preloaded and lubricated, simplifying installation and ensuring immediate, consistent performance without the need for initial setup or lubrication.
71807 ACD/P4 Bearing Typical Application Areas
The 71807 ACD/P4 is engineered for high-performance applications where precision, speed, and reliability are critical. Its primary uses include:
- Machine Tool Spindles
- High-Frequency Electric Spindles
- Precision Grinding Equipment
- High-Speed Pumps and Compressors
- Advanced Robotics and Automation Systems
