W 61904-2Z
W Series Stainless Steel Bearings
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W 61904-2Z Bearing Product Overview & Core Advantages
The W 61904-2Z is a single row deep groove ball bearing designed for exceptional performance in demanding applications. Constructed entirely from stainless steel, it offers superior corrosion resistance. Its key advantage lies in its ability to handle significant radial loads, while the shielded (2Z) design on both sides retains factory-applied grease and effectively excludes contaminants. This combination makes it a compact, low-maintenance, and highly reliable solution for applications requiring precision and long service life.
W 61904-2Z Bearing Model Code Explained, Specifications & Naming Convention
- W 61904: Indicates the basic bearing series, a metric, single row deep groove ball bearing with a 20mm bore, 37mm OD, and 9mm width.
- -2Z: Signifies that the bearing is equipped with non-contact shields on both sides. This provides effective protection against contamination while allowing for high-speed operation with minimal friction increase.
W 61904-2Z Bearing Structural Features & Performance Benefits
Robust Stainless Steel Construction: All components, including rings, balls, and cage, are made from stainless steel, ensuring excellent corrosion resistance and suitability for harsh environments.
Optimized Load Capacity: The deep groove raceway and precision-ground components enable high radial dynamic load rating of 1243 lbf, making it capable of handling substantial loads.
High-Speed Capability: The non-contact shields and optimized internal geometry contribute to a high limiting speed of 20,000 rpm.
Maintenance-Free Operation: The bearing is pre-lubricated with grease and sealed with shields, making it lubricated-for-life under normal operating conditions, reducing maintenance needs.
Precision Tolerance: Manufactured to P0 (Normal) tolerance class and standard CN radial internal clearance, ensuring consistent and reliable performance.
W 61904-2Z Bearing Typical Application Areas
This bearing is ideally suited for a wide range of applications where reliability, corrosion resistance, and low maintenance are critical:
- Food and Beverage Processing Equipment
- Medical and Laboratory Instruments
- Chemical Handling Pumps and Mixers
- Electrical Motors and Small Gearboxes
- Office Automation Equipment and Precision Mechanisms
