W 61905-2RS1/VT378
W Series Stainless Steel Bearings
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W 61905-2RS1/VT378 Bearing Product Overview & Core Advantages
The W 61905-2RS1/VT378 is a sealed single row deep groove ball bearing designed for high reliability and long service life in demanding applications. Constructed entirely from stainless steel (rings, balls, and cage), it offers excellent corrosion resistance. Its key advantages include the ability to handle significant radial loads and moderate axial loads in both directions, making it a versatile and compact solution. The integral contact seals (2RS1) effectively retain lubricant and exclude contaminants, while the pre-lubrication with VT378 grease ensures immediate operation and extended maintenance-free intervals, even across a wide temperature range.
Model Code Breakdown
- W: Indicates a bearing with a stainless steel design.
- 61905: Denotes the bearing series and size. '61' is a series for deep groove ball bearings with a low cross-section, '9' indicates a 9mm width, and '05' signifies a 25mm bore diameter.
- 2RS1: Signifies that the bearing is fitted with two-sided contact seals made from Nitrile Rubber (NBR). This provides superior protection against contamination and grease leakage compared to non-contact shields.
- VT378: Represents the specific type of high-performance, food-grade grease used for pre-lubrication. This grease is suitable for the specified temperature range and offers good mechanical stability.
W 61905-2RS1/VT378 Bearing Structural Features & Performance Benefits
Corrosion Resistance: The use of stainless steel for all critical components makes this bearing ideal for applications exposed to moisture, chemicals, or washdown environments, ensuring long-term bearing integrity.
Sealing Effectiveness: The 2RS1 contact seals provide a high level of protection, significantly extending bearing life by preventing the ingress of contaminants and the egress of lubricant, contributing to its maintenance-free characteristic.
Load Capacity and Precision: Manufactured to ABEC 1 / ISO P0 tolerance class, it provides reliable and smooth operation. The radial dynamic load rating of 1360 lbf and static load rating of 1012 lbf demonstrate its capability to handle substantial loads for its size.
Operational Readiness: Being pre-lubricated with VT378 grease, the bearing is ready for immediate installation and use, reducing assembly time and ensuring optimal performance from start-up.
W 61905-2RS1/VT378 Bearing Typical Application Areas
This bearing is well-suited for a variety of applications where corrosion resistance, cleanliness, and reliability are paramount. Key sectors include:
- Food and Beverage Processing Equipment: Conveyors, mixers, and pumps.
- Medical and Pharmaceutical Devices: Small motors, diagnostic equipment, and dosing pumps.
- Chemical Handling Equipment: Where exposure to aggressive substances is a concern.
- General Machinery: Electric motors, gearboxes, and appliances operating in humid or corrosive environments.
