D/W R188 R-2Z
D/W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
D/W R188 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0023 kg
Tolerance class
P0
Seal type
Shielded
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
0.18748"
Width tolerance
-0.005" to 0"
Outer Ring Dimensions
Flange outer diameter
0.54701"
Flange thickness
0.045"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
139 lbf
Radial static load rating
50 lbf
Limiting speed
53 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
Price:
$ 1.28
/ each
In Stock
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D/W R188 R-2Z Bearing Product Overview & Core Advantages
The D/W R188 R-2Z is a single row deep groove ball bearing designed for exceptional performance in compact spaces. Manufactured entirely from stainless steel, it offers superior corrosion resistance. Its key advantage lies in its ability to handle radial loads efficiently, while the shielded (2Z) construction on both sides retains factory-applied grease lubrication, providing long-term, maintenance-free operation. This makes it an ideal precision bearing for applications demanding high reliability and cleanliness.
D/W R188 R-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| R188 | The basic bearing designation, indicating a specific bearing size in the inch series with a 1/4" bore. |
| R-2Z | The suffix. R denotes a flanged outer ring. 2Z signifies non-contact shields on both sides for effective contamination exclusion without significantly increasing friction. |
D/W R188 R-2Z Bearing Structural Features & Performance Benefits
- Robust Construction & Corrosion Resistance: The bearing rings, balls, and cage are all made from stainless steel, providing excellent resistance to rust and corrosion, suitable for harsh environments and washdown applications.
- Effective Sealing: The double-shielded (2Z) design effectively protects the internal components from dust and other contaminants, while the pre-applied grease ensures smooth operation from the start.
- Simplified Mounting & Positioning: The integrated flange on the outer ring allows for easy axial location and secure mounting, simplifying assembly and saving space within the housing.
- Reliable Performance: With a P0 tolerance class and standard CN radial internal clearance, this bearing offers consistent and reliable performance for a wide range of general-purpose applications.
D/W R188 R-2Z Bearing Typical Application Areas
This bearing is commonly specified in:
- Medical and Dental Equipment (e.g., small motors, pumps)
- Food Processing and Packaging Machinery
- Precision Instruments and Optical Devices
- Small Electric Motors and Gearboxes
- Office Automation Equipment
