D/W R166 R
D/W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
D/W R166 R
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0008 kg
Tolerance class
P0
Seal type
Open
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
0.023"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
91 lbf
Radial static load rating
31 lbf
Limiting speed
80 X 1000 rpm
Lubrication
None
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 Bearing Product Overview & Core Advantages
The D/W R166 R is a precision miniature ball bearing designed for demanding applications requiring high reliability and compact design. As an open single row radial ball bearing manufactured to inch dimensions, it excels in handling radial loads with exceptional rotational accuracy. Constructed entirely from stainless steel, it offers excellent corrosion resistance, making it suitable for harsh environments and ensuring long-term performance stability. Its compact cross-section and lightweight design make it an ideal solution for space-constrained precision mechanisms.
D/W R166 R Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer's prefix for a specific series of miniature inch bearings. |
| R166 | The base bearing designation, defining the core dimensions and type. |
| R | Flange designator. This bearing features an integral outer ring flange for simplified mounting and axial location. |
D/W R166 R Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and cage are made from stainless steel, providing superior corrosion resistance and enabling operation in a wide temperature range from -30°C to 120°C. This ensures durability and reliability in challenging conditions.
- Flanged Outer Ring: The integrated flange (OD: 0.42201") allows for easy and secure mounting into a housing, simplifying assembly and providing accurate axial positioning without the need for complex housing shoulders.
- High-Precision Design: Manufactured to ABEC 1 (P0) tolerance class with a CN radial internal clearance, this bearing delivers consistent, low-vibration performance essential for precision applications.
- Open Design & High-Speed Capability: The open seal type minimizes friction, contributing to a high limiting speed of 80,000 rpm. This makes it suitable for high-speed spindles and rotors.
- Robust Load Capacity: With a dynamic load rating of 91 lbf and a static load rating of 31 lbf, it provides reliable performance under significant radial loads for its size.
D/W R166 R Bearing Typical Application Areas
This bearing is engineered for precision instruments and compact machinery, including:
- Precision Medical Devices (e.g., surgical hand tools, dental drills)
- Small Motors and Encoders
- Office Automation Equipment (e.g., scanners, printers)
- Instrumentation and Control Systems
- Aerospace and Defense Guidance Systems
- Any application requiring a reliable, corrosion-resistant miniature flange bearing with inch dimensions.
