W 619/4 R-2Z
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 619/4 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0018 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
11 mm
Outside diameter tolerance
-0.008mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
12.5 mm
Flange thickness
1 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
121 lbf
Radial static load rating
40 lbf
Limiting speed
63 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 619/4 R-2Z Bearing Product Overview & Core Advantages
The W 619/4 R-2Z is a metric miniature deep groove ball bearing designed for precision applications requiring compact dimensions and reliable performance. Featuring single row construction and stainless steel components, this bearing delivers excellent corrosion resistance and durability. Its key advantage lies in its ability to handle radial loads efficiently while operating at high speeds up to 63,000 rpm. The combination of shielded design (2Z) and pre-lubrication ensures long-term, maintenance-free operation, making it ideal for applications demanding high reliability in limited spaces.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W 619/4 | Miniature deep groove ball bearing series with 4mm bore diameter |
| R | Flanged outer ring design for secure mounting and positioning |
| 2Z | Double shielded construction providing effective contamination protection |
W 619/4 R-2Z Bearing Structural Features & Performance Benefits
- Compact Design & High Precision: With dimensions of 4×11×4mm and P0 tolerance class, this bearing offers precise running accuracy and space-saving installation
- Enhanced Contamination Resistance: The double shielded design (2Z) effectively protects against dust and particles while retaining lubrication
- High-Speed Capability: Optimized geometry and grease lubrication enable operation up to 63,000 rpm, suitable for high-speed applications
- Corrosion Resistance: All stainless steel construction (rings, balls, cage) ensures excellent performance in harsh environments and extends service life
- Easy Mounting: The integrated flange (12.5mm diameter) simplifies axial positioning and secure installation
W 619/4 R-2Z Bearing Typical Application Areas
- Precision instruments and measuring devices
- Small motors and miniature drives
- Medical equipment and dental handpieces
- Office automation equipment and printers
- Robotics and miniature automation systems
- Optical devices and surveillance equipment
