W 61903 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 61903 R-2Z Bearing Product Overview & Core Advantages
The W 61903 R-2Z is a single row deep groove ball bearing designed for exceptional performance in compact applications. Engineered with stainless steel rings, balls, and cage, it offers excellent corrosion resistance. Its key advantage lies in its ability to handle radial loads efficiently while also accommodating moderate axial loads in both directions. The integrated shielded design and pre-applied grease ensure long-term, maintenance-free operation, making it a reliable choice for applications demanding high precision and durability within a compact envelope.
W 61903 R-2Z Bearing Model Code Explained, Specifications & Naming Convention
- W 61903: Denotes the bearing series and size. "W" often indicates a stainless steel version. "61903" specifies a metric, extra-small, thin-section bearing with a 17mm bore, 30mm OD, and 7mm width.
- R: Represents a flanged outer ring. This feature simplifies mounting and positioning within a housing.
- 2Z: Signifies that the bearing is shielded on both sides. This provides effective protection against contaminant ingress while allowing for high-speed operation compared to contact seals.
W 61903 R-2Z Bearing Structural Features & Performance Benefits
Compact & Robust Flange Design: The flanged outer ring (R suffix) provides secure axial location, simplifies assembly, and enhances structural stability in the application.
Effective Contamination Protection: The non-contact shields (2Z) on both sides protect the internal bearing components from dust and other particles, significantly extending service life and reliability without the friction associated with contact seals.
Corrosion Resistance & High-Speed Capability: Constructed entirely from stainless steel, this bearing is ideal for environments exposed to moisture or chemicals. The combination of the steel cage and shields supports a high limiting speed of 24,000 rpm.
Ready-to-Use & Low Maintenance: The bearing is pre-lubricated with grease, making it maintenance-free for its entire service life under normal operating conditions within its specified temperature range of -30°C to 120°C.
W 61903 R-2Z Bearing Typical Application Areas
The W 61903 R-2Z is ideally suited for a wide range of small and precision machinery where space is limited and reliability is critical. Common applications include:
- Small Electric Motors and miniature gearboxes
- Medical Devices and dental handpieces
- Precision Instruments and optical encoders
- Office Automation Equipment such as printers and scanners
- Food Processing Equipment (benefiting from its stainless steel construction)
