W 61903-2RS1/VT378
W Series Stainless Steel Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
W 61903-2RS1/VT378 Bearing Product Overview & Core Advantages
The W 61903-2RS1/VT378 is a single row deep groove ball bearing designed for high reliability in compact applications. Engineered from stainless steel for excellent corrosion resistance, this sealed bearing offers robust radial load capacity and is pre-lubricated for long-term, maintenance-free operation. Its precision ABEC 1 | ISO P0 tolerance ensures consistent performance, making it an ideal choice for applications demanding durability and smooth operation within a wide temperature range.
Model Code Breakdown
- W: Bearing series designation.
- 61903: Standard deep groove ball bearing series with 17mm bore, 30mm OD, and 7mm width.
- 2RS1: Features contact seals on both sides, providing effective protection against contaminants and retaining lubricant.
- VT378: Indicates the bearing is pre-lubricated with a specific, high-quality grease.
W 61903-2RS1/VT378 Bearing Structural Features & Performance Benefits
Robust Construction: Manufactured with stainless steel rings, balls, and a chrome steel cage, this bearing offers high corrosion resistance and durability. The single row deep groove design is optimized for handling radial dynamic loads up to 892 lbf efficiently.
Enhanced Sealing & Lubrication: The 2RS1 double-contact seals provide superior protection against moisture and debris, significantly extending service life. Pre-lubrication ensures immediate operation and long-term reliability without the need for maintenance.
Precision Performance: Built to ABEC 1 (ISO P0) tolerance standards with standard CN radial internal clearance, this bearing delivers smooth, low-noise, and low-vibration operation, suitable for a wide range of industrial applications.
W 61903-2RS1/VT378 Bearing Typical Application Areas
This versatile bearing is commonly used in:
- Electric Motors and Small Gearboxes
- Medical and Dental Equipment
- Food Processing and Packaging Machinery
- Office Automation Equipment (e.g., Printers, Scanners)
- Precision Instruments and Low-Torque Mechanisms
