W 61904 R-2Z
W Series Stainless Steel Flanged Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
W 61904 R-2Z Bearing Product Overview & Core Advantages
The W 61904 R-2Z is a single row deep groove ball bearing engineered for exceptional performance in compact spaces. Constructed entirely from stainless steel, it offers superior corrosion resistance. Its key advantage lies in its ability to handle radial loads efficiently while its shielded design (2Z) retains factory-applied grease and protects against contaminant ingress, ensuring long-term, maintenance-free operation. This makes it an ideal precision bearing for applications demanding high reliability and cleanliness.
Model Code Breakdown
| Code Segment | Description | Technical Significance |
|---|---|---|
| W 61904 | Basic Bearing Designation | Indicates a metric, single row deep groove ball bearing series with a 20mm bore, 37mm OD, and 9mm width. |
| R | Flange Design | Specifies that the outer ring features a flange (O.D. 40mm), facilitating simplified mounting and axial location. |
| 2Z | Sealing Type | Denotes non-contact shields on both sides. This design offers effective protection against dust and moisture with minimal friction, contributing to the high limiting speed. |
W 61904 R-2Z Bearing Structural Features & Performance Benefits
- Full Stainless Steel Construction: The bearing rings, balls, and cage are manufactured from stainless steel, providing excellent resistance to rust and corrosion, making it suitable for harsh environments and washdown applications.
- Shielded for Protection & Longevity: The 2Z shields seal in the pre-applied grease and seal out contaminants. This creates a maintenance-free solution, reducing lifecycle costs and ensuring consistent performance.
- Flanged Outer Ring: The integral flange allows for easy and secure axial positioning within a housing, simplifying assembly and reducing the need for complex housing designs.
- Optimized for Speed: The combination of a low-friction stainless steel cage and non-contact shields enables a high limiting speed of 20,000 rpm, suitable for high-speed applications.
- Precision Tolerances: Manufactured to P0 (Normal) tolerance class and standard CN radial internal clearance, ensuring reliable and predictable performance in a wide range of operating conditions.
W 61904 R-2Z Bearing Typical Application Areas
The W 61904 R-2Z is ideally suited for applications requiring compact size, corrosion resistance, and reliable, maintenance-free operation. Key industries and equipment include:
- Food & Beverage Processing Equipment (e.g., conveyors, mixers)
- Medical and Laboratory Devices (e.g., small pumps, analyzers)
- Precision Instruments and Optical Devices
- Small Electric Motors and Gearboxes
- Office Automation Equipment (e.g., printers, scanners)
