D/W R3-2Z
D/W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
D/W R3-2Z
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0027 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"
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
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In Stock
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D/W R3-2Z Bearing Product Overview & Core Advantages
The D/W R3-2Z is a single row deep groove ball bearing designed for high-performance applications requiring reliability and precision. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to handle radial loads efficiently while its shielded (2Z) design and pre-lubrication ensure long-term, maintenance-free operation in demanding environments. This compact and robust bearing is ideal for applications where space is limited and consistent performance is critical.
D/W R3-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Code | Technical Meaning |
|---|---|---|
| Manufacturer / Series | D/W R3 | Designates the manufacturer series and bore size code. |
| Seal Type | 2Z | Indicates non-contact shields on both sides, providing effective protection against contaminants while minimizing friction. |
D/W R3-2Z Bearing Structural Features & Performance Benefits
- High Corrosion Resistance & Cleanliness: Manufactured from stainless steel rings, balls, and cage, this bearing is suitable for corrosive environments and applications requiring cleanliness, such as in food and medical industries.
- Robust Load Capacity: The deep groove raceway and single-row design are optimized to support significant radial dynamic load ratings (167 lbf), ensuring stable operation.
- Maintenance-Free Operation: The combination of non-contact shields (2Z) and factory-applied grease lubrication seals in the lubricant and seals out debris, enabling long service life without re-lubrication.
- Precision & Stability: With a standard P0 tolerance class and CN radial internal clearance, this bearing offers reliable and consistent performance for a wide range of general-purpose applications.
D/W R3-2Z Bearing Typical Application Areas
This versatile miniature bearing is commonly specified in:
- Precision Instruments: Optical encoders, measuring devices, and scientific instruments.
- Small Electric Motors: Used in compact fans, pumps, and drive systems.
- Office Automation Equipment: Printers, scanners, and copiers.
- Medical Devices: Dental handpieces, small pumps, and diagnostic equipment where corrosion resistance is vital.
- Food Processing Machinery: Conveyor systems and other equipment requiring washdown compatibility.
