W 625 R-2Z
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 625 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0053 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
16 mm
Outside diameter tolerance
-0.008mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
18 mm
Flange thickness
1 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
321 lbf
Radial static load rating
142 lbf
Limiting speed
50 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
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In Stock
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W 625 R-2Z Bearing Product Overview & Core Advantages
The W 625 R-2Z is a single row deep groove ball bearing designed for compact applications requiring high reliability and corrosion resistance. Constructed entirely from stainless steel, it offers excellent performance in demanding environments. Its key advantage lies in its ability to handle radial loads efficiently while its shielded (2Z) design provides effective contaminant protection and retains lubrication, making it a robust and long-lasting solution for precision machinery.
W 625 R-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| W 625 | Indicates the bearing series and size. A single row deep groove ball bearing with a 5 mm bore, 16 mm OD, and 5 mm width. |
| R | Specifies a flanged outer ring. The flange (18 mm OD) facilitates secure and simplified mounting. |
| 2Z | Denotes non-contact shields on both sides. This provides excellent protection against contaminants while minimizing friction, contributing to the bearing's limiting speed of 50,000 rpm. |
W 625 R-2Z Bearing Structural Features & Performance Benefits
- Compact & Robust Design: The single row construction and flanged outer ring offer a space-saving solution with easy installation and alignment.
- Corrosion Resistance: All components, including rings, balls, and cage, are made from stainless steel, ensuring reliable operation in corrosive or wash-down environments.
- High-Speed Capability: The combination of a stainless steel cage, low-friction shields (2Z), and pre-applied grease lubrication enables a high limiting speed for its size.
- Maintenance-Free Operation: The shielded design seals in the factory-applied grease, providing long-term, maintenance-free service within the specified temperature range of -30°C to 120°C.
W 625 R-2Z Bearing Typical Application Areas
This bearing is ideally suited for applications requiring a compact, corrosion-resistant, and high-speed solution. Common uses include:
- Precision Small Motors (e.g., in drones, medical devices)
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Control Systems
- Food Processing and Packaging Machinery (benefiting from its stainless steel construction)
