D/W R188 R
D/W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
D/W R188 R
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0016 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.25"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.5"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.125"
Width tolerance
-0.005" to 0"
Outer Ring Dimensions
Flange outer diameter
0.54701"
Flange thickness
0.023"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
139 lbf
Radial static load rating
50 lbf
Limiting speed
67 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
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In Stock
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D/W R188 R Bearing Product Overview & Core Advantages
The D/W R188 R is a precision miniature ball bearing designed for demanding applications requiring high reliability and dimensional stability. As a single row deep groove ball bearing in inch dimensions, it excels in handling radial loads with exceptional running accuracy. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. Its compact design, featuring a small bore diameter of 0.25", makes it ideal for space-constrained assemblies where consistent performance is critical.
D/W R188 R Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer's prefix (Dodge/Wave) |
| R188 | Standard bearing series designation for this inch size. |
| R | Indicates a flanged outer ring, which facilitates precise axial location and simplifies housing design. |
| No Seal Suffix | The open (unsealed) construction allows for higher limiting speeds and is suitable for environments where external sealing is provided. |
| No Lubrication Suffix | The bearing is supplied without lubrication ("None"), offering flexibility for the user to apply a specialized lubricant suited to the specific application. |
D/W R188 R Bearing Structural Features & Performance Benefits
- Flanged Design for Easy Installation: The integrated flange on the outer ring ensures secure mounting and accurate positioning within the housing, reducing assembly time and improving alignment.
- High-Grade Stainless Steel Construction: All components, including rings, balls, and cage, are made from stainless steel, providing superior corrosion resistance and enabling use in harsh or washdown environments.
- Optimized for High-Speed Operation: The open design and precision-ground components contribute to a high limiting speed of 67,000 rpm, making it suitable for high-speed spindles and miniature motors.
- Precision Tolerances: Manufactured to ABEC 1 (P0) tolerance class and standard radial internal clearance (CN), this bearing ensures smooth, low-vibration, and low-noise operation.
- Compliant Material: The bearing is ROHS and REACH compliant, meeting international environmental and safety standards.
D/W R188 R Bearing Typical Application Areas
The D/W R188 R is engineered for precision mechanisms across various industries, including:
- Medical and Dental Devices: Surgical handpieces, small pumps, and diagnostic equipment.
- Precision Instruments: Optical encoders, gauges, and laboratory apparatus.
- Office Automation: Small fans, printers, and scanners.
- Robotics and Automation: Small joint actuators, guide rollers, and miniature assemblies.
- Food and Beverage Equipment: Suitable for applications requiring corrosion resistance and cleanability.
