71802 ACD/P4DFBVT162
71800 Series Super Precision Angular Contact Ball Bearings
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71802 ACD/P4DFBVT162 Bearing Product Overview & Core Advantages
The 71802 ACD/P4DFBVT162 is a super-precision metric angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. This bearing is supplied as a matched duplex pair in a Face-to-Face (DF) arrangement with a light preload (Class B), ensuring exceptional rotational accuracy and system stability. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously, making it an ideal choice for spindles requiring supreme precision and reliability in compact spaces.
71802 ACD/P4DFBVT162 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71802 | Basic bearing series and size designation (15mm bore, 24mm OD). |
| ACD | Angular Contact Design with a 25° contact angle for optimal axial load capacity. |
| P4 | Indicates a high-precision tolerance class (equivalent to ABEC 7), ensuring minimal runout and vibration. |
| DF | Specifies the Duplex Face-to-Face mounting arrangement of the matched pair. |
| B | Denotes the Light preload applied to the matched set for enhanced rigidity. |
| VT162 | Signifies the type of grease lubrication pre-applied, suitable for the specified temperature range. |
71802 ACD/P4DFBVT162 Bearing Structural Features & Performance Benefits
High Rigidity and System Stability: The matched duplex DF arrangement with a controlled light preload significantly increases the overall system stiffness. This configuration is critical for applications where shaft deflection must be minimized to maintain precision.
Superior High-Speed Capability: The use of a lightweight, durable phenolic resin cage reduces centrifugal forces, allowing the bearing to achieve its high limiting speed of 121,000 rpm. The optimized internal geometry and 25° contact angle further contribute to stable operation at extreme rotational velocities.
Precision and Load Capacity: Manufactured to P4 tolerance class from high-grade chrome steel, this bearing guarantees exceptional running accuracy. It offers a dynamic load rating of 790 lbf and a static load rating of 630 lbf, providing reliable performance under significant combined loads.
Ready-to-Install Convenience: The bearing pair is supplied pre-lubricated with grease and pre-matched, simplifying installation and ensuring immediate, optimal performance right out of the box.
71802 ACD/P4DFBVT162 Bearing Typical Application Areas
The 71802 ACD/P4DFBVT162 is engineered for high-performance machinery where precision and speed are paramount. Its primary applications include:
- High-Frequency CNC Machining Spindles
- Precision Grinding Spindles
- High-Speed Robotic Drives and Joints
- PCB Drilling and Milling Spindles
- Medical and Dental Handpiece Drives
- Advanced Aerospace Instrumentation
