W 61903-2Z
W Series Stainless Steel Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 61903-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.017 kg
Tolerance class
P0
Seal type
Shielded
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
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
892 lbf
Radial static load rating
573 lbf
Limiting speed
24 X 1000 rpm
Lubrication
Grease
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
No drawings available at the moment, will be launched soon
Price:
$ 9.44
/ each
In Stock
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W 61903-2Z Bearing Product Overview & Core Advantages
The W 61903-2Z is a single row deep groove ball bearing engineered for precision and reliability in demanding applications. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to efficiently support radial loads while also accommodating moderate axial loads in both directions. The shielded (2Z) design with pre-applied grease lubrication ensures long-term, maintenance-free operation, making it an ideal choice for compact assemblies requiring high rotational accuracy and durability.
W 61903-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Bearing |
| 61903 | Deep Groove Ball Bearing Series with 17mm bore, 30mm OD, 7mm width |
| 2Z | Bearing with Shields on Both Sides for contaminant protection |
W 61903-2Z Bearing Structural Features & Performance Benefits
- Robust Construction: The single row deep groove raceway and stainless steel cage provide stable operation and high running accuracy.
- Optimal Load Capacity: Engineered to handle significant radial dynamic load ratings (892 lbf) and static loads, suitable for various force conditions.
- High-Speed Capability: With a limiting speed of 24,000 rpm, it is designed for high-speed applications.
- Maintenance-Free & Long-Lasting: The 2Z shields effectively retain grease and exclude contaminants, while the standard radial internal clearance (CN) and P0 tolerance class ensure consistent performance and extended service life without re-lubrication.
- Corrosion Resistance: All stainless steel components (rings, balls, cage) provide superior protection in humid or corrosive environments.
W 61903-2Z Bearing Typical Application Areas
This bearing is widely used in applications requiring corrosion resistance, high speed, and low maintenance. Key sectors include:
- Medical and Dental Equipment
- Food Processing and Packaging Machinery
- Precision Instruments and Optical Devices
- Small Electric Motors and Pumps
- Office Automation Equipment
