W 619/2
W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
W 619/2
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0003 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
2 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
6 mm
Outside diameter tolerance
-0.008mm to 0
Width
2.3 mm
Width tolerance
-0.04mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
43 lbf
Radial static load rating
11 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 619/2 Bearing Product Overview & Core Advantages
The W 619/2 is a metric miniature deep groove ball bearing designed for applications demanding compact size and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. As a single row, open bearing, it is optimized for radial loads and is characterized by its very small dimensions (2mm bore, 6mm OD) and low weight. Its P0 tolerance class ensures consistent quality for general precision applications, making it a fundamental component in compact mechanical assemblies.
W 619/2 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Deep Groove Ball Bearing series. |
| 619 | Bearing series designation, indicating a deep groove geometry with a specific cross-section. |
| /2 | Specifies the bore diameter code. In this case, a 2 mm bore. |
| Open (Implied) | No seals or shields, allowing for higher limiting speeds and easy re-lubrication if required. |
W 619/2 Bearing Structural Features & Performance Benefits
- Full Stainless Steel Construction: The rings, balls, and cage are made of stainless steel, providing superior corrosion resistance and suitability for harsh environments or clean applications.
- Deep Groove Raceway: The geometry of the raceway is optimized for handling radial dynamic loads and moderate axial loads in both directions.
- High-Speed Capability: The open design and stainless steel cage contribute to a high limiting speed of 110,000 rpm, making it suitable for very high-speed spindles and miniature motors.
- Precision & Reliability: Manufactured to P0 tolerance class and standard CN radial internal clearance, this bearing ensures smooth, low-vibration, and reliable operation in precision instruments.
W 619/2 Bearing Typical Application Areas
- Small Precision Electric Motors and Spindles
- Medical and Dental Hand Tools
- Optical Encoders and Scanning Devices
- Instrumentation and Control Devices
- Office Automation Equipment (e.g., small printers, scanners)
- Robotics and Miniature Actuators
