W 61901-2RS1/VT378
W Series Stainless Steel Bearings
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W 61901-2RS1/VT378 Bearing Product Overview & Core Advantages
The W 61901-2RS1/VT378 is a miniature deep groove ball bearing engineered for precision and reliability in compact applications. This sealed single row bearing is designed to primarily handle radial loads and is constructed entirely from corrosion-resistant materials, making it suitable for demanding environments. Its key advantages include a compact design with a 12 mm bore, excellent operational stability due to its stainless steel construction, and long service life facilitated by integrated seals and a high-quality cage. It is an ideal solution for applications requiring high-speed operation up to 40,000 rpm and consistent performance within a wide temperature range.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Bearing |
| 61901 | Bearing series and size designation (Extra thin section, 12mm bore) |
| 2RS1 | Contact seals on both sides, providing effective protection against contaminants. |
| VT378 | Filled with a specific, high-performance grease suitable for the stated temperature range. |
W 61901-2RS1/VT378 Bearing Structural Features & Performance Benefits
- Robust Sealed Design: The 2RS1 contact seals effectively shield the bearing's internals from dust, moisture, and other contaminants, enhancing reliability and enabling use in unclean environments.
- Corrosion Resistance: Manufactured with stainless steel rings and balls, this bearing offers excellent resistance to corrosion, which is critical for applications exposed to humidity, water, or certain chemicals.
- High-Speed Capability: The combination of a chrome steel cage, precision ABEC 1 tolerances, and optimized internal geometry allows for a high limiting speed of 40,000 rpm.
- Maintenance-Free Operation: The bearing is pre-lubricated with VT378 grease and sealed for life, eliminating the need for re-lubrication and reducing maintenance costs.
- Precision and Stability: Built to ABEC 1 (ISO P0) tolerance class with standard CN radial internal clearance, it ensures smooth and quiet running, contributing to overall system accuracy.
W 61901-2RS1/VT378 Bearing Typical Application Areas
- Small Electric Motors (e.g., in drones, power tools, and miniature fans)
- Precision Instruments and Medical Devices
- Office Automation Equipment (e.g., printers, scanners, copiers)
- Robotics and Automation joints and guides
- Food and Beverage Industry machinery where corrosion resistance is required
