W 619/2 X-2Z
W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
W 619/2 X-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.000307 kg
Tolerance class
P0
Seal type
Shielded
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
2.5 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
90 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 619/2 X-2Z Bearing Product Overview & Core Advantages
The W 619/2 X-2Z is a miniature deep groove ball bearing designed for precision applications requiring compact dimensions and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to handle radial loads efficiently while its shielded (2Z) design provides protection against contaminant ingress, making it a robust and low-maintenance solution for high-speed, long-life applications.
W 619/2 X-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W 619/2 | Indicates the bearing series and size. A miniature deep groove ball bearing with a 2 mm bore. |
| X | Specifies a contact seal on one side. |
| 2Z | Denotes shielded on both sides. This provides excellent protection against dust and other contaminants while minimizing friction. |
W 619/2 X-2Z Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With dimensions of 2 mm (bore) x 6 mm (OD) x 2.5 mm (width) and a weight of only 0.000307 kg, it is ideal for space-constrained and weight-sensitive applications.
- Corrosion Resistance: Manufactured from stainless steel rings, balls, and cage, this bearing is suitable for harsh environments and offers long-term reliability.
- Shielded Protection: The 2Z shields effectively retain the factory-applied grease lubrication and exclude contaminants, contributing to a maintenance-free service life.
- High-Speed Capability: The optimized design and lubrication enable a limiting speed of 90,000 rpm, making it suitable for demanding high-speed operations.
- Standard Precision: Manufactured to P0 tolerance class and standard CN radial internal clearance, ensuring consistent and reliable performance.
W 619/2 X-2Z Bearing Typical Application Areas
This miniature ball bearing is widely used in precision instruments and compact mechanisms, including:
- Small precision motors and stepper motors
- Medical devices and dental handpieces
- Optical encoders and instrumentation
- Office automation equipment (e.g., small printers, scanners)
- Robotics and miniature gearboxes
