D/W R1-4 R-2Z
D/W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
D/W R1-4 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.000611 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.07813"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.25"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.14059"
Width tolerance
-0.005" to 0"
Outer Ring Dimensions
Flange outer diameter
0.29598"
Flange thickness
0.03098"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
37 lbf
Radial static load rating
11 lbf
Limiting speed
85 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 R1-4 R-2Z Bearing Product Overview & Core Advantages
The D/W R1-4 R-2Z is a single row deep groove ball bearing designed for exceptional performance in compact, precision applications. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. Its core advantages include the ability to handle significant radial loads and moderate axial loads in both directions. The shielded (2Z) design with pre-applied grease lubrication provides robust contamination protection and long-term, maintenance-free operation, making it ideal for applications demanding high reliability and cleanliness.
Model Code Breakdown
| Code Segment | Description | Technical Significance |
|---|---|---|
| D/W | Manufacturer / Series | Designates the manufacturer and product series. |
| R1-4 | Bore Size Code | Specifies the bore diameter of 0.07813" (approx. 1.984 mm). |
| R | Flange Design | Indicates the bearing features an outer locating flange for simplified mounting and positioning. |
| 2Z | Sealing Type | Signifies non-contact shields on both sides. This provides effective protection against contaminants while minimizing friction, contributing to the high limiting speed of 85,000 rpm. |
D/W R1-4 R-2Z Bearing Structural Features & Performance Benefits
- Compact & Robust Flange Design: The integrated outer flange (Ø0.29598") simplifies axial location and mounting, reducing assembly time and cost in housings.
- High-Speed Capability: The combination of a stainless steel cage, low-friction 2Z shields, and optimized grease allows for a very high limiting speed for its size.
- Corrosion Resistance & Cleanliness: All components, including rings, balls, and cage, are made from stainless steel, making it suitable for harsh environments and applications requiring cleanliness, such as medical or food processing equipment.
- Reliable Load Handling: With a dynamic load rating of 37 lbf and a static load rating of 11 lbf, this bearing is engineered to handle substantial radial loads reliably over its service life.
- Maintenance-Free Operation: The bearing is pre-lubricated with grease and sealed for life, eliminating the need for re-lubrication and ensuring consistent performance.
D/W R1-4 R-2Z Bearing Typical Application Areas
- Small Precision Motors and stepper motors
- Medical Devices and dental handpieces
- Optical Encoders and precision instrumentation
- Office Automation Equipment (e.g., printers, scanners)
- Robotics and small gearboxes
- Food processing machinery components
