W 619/8 R-2Z
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 619/8 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.008 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
8 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
19 mm
Outside diameter tolerance
-0.009mm to 0
Width
6 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
22 mm
Flange thickness
1.5 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
281 lbf
Radial static load rating
102 lbf
Limiting speed
43 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 619/8 R-2Z Bearing Product Overview & Core Advantages
The W 619/8 R-2Z is a single row deep groove ball bearing designed for exceptional precision and reliability in demanding applications. This metric bearing features a compact design with a 8 mm bore, making it ideal for space-constrained assemblies. Its core advantages include the ability to handle significant radial loads, high-speed operation up to 43,000 rpm, and long service life due to its stainless steel construction and shielded design. Pre-lubricated with grease, it offers a maintenance-free solution for a wide operating temperature range.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W 619/8 | Basic bearing designation for a single row deep groove ball bearing series with an 8 mm bore. |
| R | Indicates a flanged outer ring for simplified mounting and axial location. |
| 2Z | Signifies shielded on both sides. This provides effective protection against contaminant ingress while allowing for high-speed operation. |
W 619/8 R-2Z Bearing Structural Features & Performance Benefits
- High-Speed Capability: The optimized deep groove raceway and stainless steel cage contribute to a high limiting speed of 43,000 rpm, making it an excellent high-speed bearing.
- Robust Load Capacity: Engineered to carry substantial radial dynamic and static loads, ensuring reliable performance under stress.
- Corrosion Resistance: Constructed entirely from stainless steel (rings, balls, cage), offering superior resistance to corrosion and enabling use in harsh environments.
- Simplified Mounting & Positioning: The integrated flange outer ring facilitates easy installation and provides precise axial location within the housing.
- Maintenance-Free Operation: The shielded (2Z) design, combined with factory-applied grease, seals in lubrication and seals out contaminants, resulting in a long-lasting, maintenance-free precision bearing.
W 619/8 R-2Z Bearing Typical Application Areas
This versatile bearing is ideally suited for applications requiring compact size, high speed, and corrosion resistance, such as:
- Small electric motors and spindles
- Precision instruments and medical devices
- Office automation equipment (e.g., printers, scanners)
- Food processing and packaging machinery
- Robotic arms and small gearboxes
