W 61903 R
W Series Stainless Steel Flanged Bearings
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Part No.
Part No.
W 61903 R
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.018 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
30 mm
Outside diameter tolerance
-0.009mm to 0
Width
7 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
32.5 mm
Flange thickness
1.5 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
892 lbf
Radial static load rating
573 lbf
Limiting speed
32 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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W 61903 R Bearing Product Overview & Core Advantages
The W 61903 R is a single row deep groove ball bearing designed for high-performance applications requiring precision and reliability. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to handle primarily radial loads efficiently, while its compact bearing dimensions (17mm bore, 30mm OD, 7mm width) make it ideal for space-constrained assemblies. The inclusion of a flange on the outer ring facilitates easier and more secure mounting, enhancing operational stability.
W 61903 R Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| W | Indicates a stainless steel bearing. |
| 61903 | The standard bearing designation for a deep groove ball bearing with a 17mm bore, 30mm outside diameter, and 7mm width. |
| R | Signifies the presence of a flange on the outer ring for simplified mounting and positioning. |
W 61903 R Bearing Structural Features & Performance Benefits
- Corrosion Resistance & Cleanliness: Manufactured from stainless steel rings, balls, and cage, this bearing is inherently resistant to rust and corrosion, making it suitable for applications exposed to moisture, chemicals, or requiring wash-down. Its open (unsealed) design allows for easy cleaning and re-lubrication.
- High-Speed Capability: The single row deep groove geometry and precision-ground components contribute to smooth operation, supporting a limiting speed of 32,000 rpm.
- Radial Load Capacity: Engineered to efficiently carry radial dynamic loads up to 892 lbf and static loads up to 573 lbf, providing reliable performance under demanding conditions.
- Precision & Stability: Built to P0 tolerance class with a standard CN radial internal clearance, ensuring consistent and precise running. The outer ring flange adds rigidity and simplifies axial location within a housing.
W 61903 R Bearing Typical Application Areas
This bearing is ideally suited for a wide range of precision equipment and demanding environments, including:
- Food Processing & Packaging Machinery (for corrosion resistance and cleanability)
- Medical and Laboratory Equipment
- Precision Electric Motors and Small Gearboxes
- Optical and Measuring Instruments
- Various industrial applications where stainless steel components are mandated.
