D/W R166 R-2Z
D/W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
D/W R166 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.000919 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.18748"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.375"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.125"
Width tolerance
-0.005" to 0"
Outer Ring Dimensions
Flange outer diameter
0.42201"
Flange thickness
0.03098"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
91 lbf
Radial static load rating
31 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
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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D/W R166 R-2Z Bearing Product Overview & Core Advantages
The D/W R166 R-2Z is a precision miniature ball bearing designed for demanding applications requiring high reliability and compact design. As a single row deep groove ball bearing with shielded construction, it excels at handling radial loads efficiently. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. Its compact dimensions, high limiting speed of 63,000 rpm, and pre-lubrication make it an ideal choice for high-speed, low-maintenance operations in precision instruments and compact mechanisms.
D/W R166 R-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| R166 | Basic bearing designation, defining the core dimensions and type. |
| R- | Prefix indicating a flanged outer ring, providing ease of mounting and axial location. |
| 2Z | Signifies bearings with shielded on both sides. This provides effective protection against contaminant ingress while allowing for high-speed operation with minimal friction increase. |
D/W R166 R-2Z Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage, precision-ground components, and optimized grease lubrication enables a very high limiting speed of 63,000 rpm, making it suitable for demanding high-rotation applications.
- Corrosion Resistance & Long Service Life: Constructed entirely from stainless steel (rings, balls, and cage), this bearing is inherently resistant to rust and corrosion, ensuring reliable performance in harsh environments and contributing to a long operational lifespan.
- Simplified Mounting with Flange: The integrated flange on the outer ring simplifies axial positioning and mounting within a housing, reducing assembly time and cost.
- Low Maintenance & Contamination Protection: The non-contact shields (2Z) on both sides effectively retain the factory-applied grease and protect the internal bearing components from dust and other contaminants, resulting in a maintenance-free design for the life of the application.
D/W R166 R-2Z Bearing Typical Application Areas
- Precision Instruments: Optical encoders, medical devices, and laboratory equipment.
- Small Motors and Gearboxes: High-speed DC motors, stepper motors, and miniature gear drives.
- Office Automation Equipment: Printers, scanners, and copiers.
- Robotics and Automation: Small robotic joints, actuators, and conveyor system guides.
- Radio Control Models: High-performance servos and motor bearings in drones and RC cars.
