W 619/9-Z/W64
W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
W 619/9-Z/W64
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.007 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
9 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
20 mm
Outside diameter tolerance
-0.009mm to 0
Width
6 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
438 lbf
Radial static load rating
209 lbf
Limiting speed
50 X 1000 rpm
Lubrication
Soild Oil
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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W 619/9-Z/W64 Bearing Product Overview & Core Advantages
The W 619/9-Z/W64 is a precision miniature deep groove ball bearing engineered for compact applications requiring high reliability and smooth operation. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantages include the ability to handle radial loads efficiently, a shielded design for contaminant protection, and Solid Oil lubrication for maintenance-free service life across a wide operating temperature range.
Model Code Breakdown
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| W 619/9 | Bearing Series & Size | Indicates a miniature deep groove ball bearing series with a 9 mm bore. |
| -Z | Shielded (One Side) | Features a steel shield on one side to protect against contaminants while allowing for high-speed operation. |
| /W64 | Solid Oil Lubrication | The bearing is pre-lubricated with a polymer-based solid lubricant, offering a clean, long-lasting, and maintenance-free solution. |
W 619/9-Z/W64 Bearing Structural Features & Performance Benefits
- Corrosion-Resistant Construction: Both rings and balls are made from stainless steel, making the bearing ideal for applications exposed to moisture or corrosive environments.
- Contaminant Protection: The single shield (Z) effectively retains lubrication and excludes larger particulate contaminants, enhancing bearing service life.
- Maintenance-Free Operation: Integrated Solid Oil lubrication (W64) eliminates the need for re-lubrication, prevents oil leakage, and ensures consistent performance from -30°C to 120°C.
- Precision & Smooth Running: Manufactured to ABEC 1 | ISO P0 tolerance class with standard radial internal clearance (CN), ensuring low noise and vibration for smooth operation.
W 619/9-Z/W64 Bearing Typical Application Areas
This bearing is ideally suited for compact, high-speed devices requiring reliable performance with minimal maintenance. Common applications include:
- Small Electric Motors and Fans
- Precision Medical and Dental Handpieces
- Office Automation Equipment (e.g., Printers, Scanners)
- Instrumentation and Measurement Devices
- Radio Control Models and Drones
