W 617/3
W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
W 617/3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0002 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
6 mm
Outside diameter tolerance
-0.008mm to 0
Width
2 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
26 lbf
Radial static load rating
8 lbf
Limiting speed
110 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 617/3 Bearing Product Overview & Core Advantages
The W 617/3 is a metric miniature deep groove ball bearing designed for precision applications requiring compact dimensions and reliable performance. As a single row radial bearing with an open design, it excels in handling moderate radial loads while offering high-speed capability. Manufactured entirely from stainless steel, it provides excellent corrosion resistance, making it suitable for applications where durability and a long service life are critical. Its compact size (3mm bore, 6mm OD) and low weight make it an ideal component for space-constrained, high-precision assemblies.
W 617/3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Deep Groove Ball Bearing series |
| 617 | Bearing series designation, indicating the specific dimensions and internal design. |
| /3 | Indicates a bore diameter of 3 mm. |
| Seal Type: Open | No seals or shields, allowing for higher speeds and easy re-lubrication, but requiring a clean operating environment. |
| Lubrication: None | The bearing is supplied without grease, providing flexibility for the user to apply a lubricant suitable for the specific application. |
W 617/3 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and cage are made from stainless steel, providing superior corrosion resistance and enabling operation in harsh or washdown environments. This construction also contributes to a longer operational lifespan.
- High-Speed Performance: The open design and precision manufacturing contribute to a high limiting speed of 110,000 rpm, making it suitable for demanding high-speed applications.
- Precision Tolerance (P0): Manufactured to ABEC 1 (P0) tolerance class, ensuring consistent running accuracy and smooth operation, which is essential for precision instruments.
- Radial Internal Clearance (CN): Features a standard (normal) radial internal clearance group, providing a balance between quiet operation and thermal expansion management.
- Compact and Lightweight: With a minimal cross-section and a weight of only 0.0002 kg, it is engineered for applications where miniature bearing dimensions and low mass are critical design parameters.
W 617/3 Bearing Typical Application Areas
- Precision Instruments: Optical encoders, small DC motors, and medical devices.
- Small Motors and Drives: Stepper motors, servo motors, and miniature fans.
- Office Automation Equipment: Printers, scanners, and copiers.
- Radio Control Models: Drones, RC cars, and aircraft.
- Dental and Surgical Handpieces: Where high speed and corrosion resistance are mandatory.
