W 618/1
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 618/1
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
3.0E-5 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
1 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
3 mm
Outside diameter tolerance
-0.008mm to 0
Width
1 mm
Width tolerance
-0.04mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
12 lbf
Radial static load rating
3 lbf
Limiting speed
150 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
No drawings available at the moment, will be launched soon
Price:
$ 2.64
/ each
In Stock
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W 618/1 Bearing Product Overview & Core Advantages
The W 618/1 is a metric miniature deep groove ball bearing designed for applications requiring high precision and compact design. As a single row bearing with an open design, it is optimized for handling radial loads efficiently. Manufactured entirely from stainless steel, it offers excellent corrosion resistance and is suitable for a wide operating temperature range. Its minimal weight and compact dimensions make it ideal for space-constrained, high-speed applications demanding reliability.
W 618/1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Deep Groove Ball Bearing series |
| 618/1 | Bearing size designation (1mm bore, 3mm OD, 1mm width) |
| Open (Implied) | No seals or shields, allowing for higher limiting speeds and easy re-lubrication. |
W 618/1 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and cage are made from stainless steel, providing superior corrosion resistance and making the bearing suitable for harsh environments and clean applications.
- High-Speed Capability: The open design and precision manufacturing contribute to a high limiting speed of 150,000 rpm, which is critical for miniature high-speed applications.
- Precision & Low Friction: Built to P0 tolerance class with a standard CN radial internal clearance, this bearing ensures smooth operation, low noise, and minimal energy loss.
- Compact and Lightweight: With dimensions of just 1x3x1 mm and an extremely low weight, it is the optimal solution for miniaturized mechanisms and instruments.
W 618/1 Bearing Typical Application Areas
- Precision Instruments: Optical encoders, medical devices, and laboratory equipment.
- Small Motors and Drives: Micro-DC motors, stepper motors, and drone propulsion systems.
- Office Automation: Printers, scanners, and small cooling fans.
- Robotics and Automation: Miniature joints, guide rollers, and sensor mechanisms.
