D/W R3 R-2Z
D/W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
D/W R3 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.003 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
0.5"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.19598"
Width tolerance
-0.005" to 0"
Outer Ring Dimensions
Flange outer diameter
0.565"
Flange thickness
0.04201"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
167 lbf
Radial static load rating
56 lbf
Limiting speed
56 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 R3 R-2Z Bearing Product Overview & Core Advantages
The D/W R3 R-2Z is a precision miniature ball bearing designed for demanding applications requiring high reliability in compact spaces. This single row deep groove ball bearing features stainless steel construction and integral shields, making it exceptionally resistant to corrosion. Its primary advantage lies in its ability to handle radial loads efficiently while offering moderate speed capabilities. The bearing is pre-lubricated with grease, enabling immediate installation and long-term, maintenance-free operation, making it ideal for high-precision instruments and compact mechanisms.
D/W R3 R-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer/Series Designation |
| R3 | Bore Size Code (0.1875" or 3/16 inch) |
| R-2Z | Features a flanged outer ring (R) and double shields (2Z) on both sides for superior contaminant exclusion. |
D/W R3 R-2Z Bearing Structural Features & Performance Benefits
- Corrosion Resistance & Longevity: Constructed entirely from stainless steel (rings, balls, cage), this bearing is ideal for applications exposed to moisture, chemicals, or requiring washdown, ensuring a long service life.
- Contaminant Protection: The double shields (2Z) effectively retain lubricant and exclude larger particulate contaminants, enhancing reliability in unclean environments.
- Simplified Mounting & Positioning: The integrated flanged outer ring facilitates easy axial location within a housing, simplifying assembly and reducing overall component cost.
- Maintenance-Free Operation: Pre-lubricated with grease, the bearing is ready for use and sealed for life, eliminating the need for re-lubrication in most applications.
- Precision Performance: Manufactured to P0 tolerance class and standard CN radial internal clearance, it provides consistent running accuracy for smooth operation.
D/W R3 R-2Z Bearing Typical Application Areas
This versatile miniature flanged bearing is commonly specified in:
- Precision Instruments: Optical encoders, measuring devices, laboratory equipment.
- Small Motors and Gearboxes: Stepper motors, servo motors, and miniature drive systems.
- Office Automation & Medical Devices: Printers, scanners, pumps, and small surgical tools.
- Food & Beverage Equipment: Conveyor rollers and mechanisms where corrosion resistance is critical.
- Robotics and Automation: Joints, guides, and small actuators in compact robotic arms.
