D/W R1-4-2Z
D/W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
D/W R1-4-2Z
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.000511 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"
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 R1-4-2Z Bearing Product Overview & Core Advantages
The D/W R1-4-2Z is a single row deep groove ball bearing designed for precision applications requiring high reliability and compact design. Constructed entirely from stainless steel, this shielded bearing offers excellent corrosion resistance and is pre-lubricated with grease for long-term performance. Its primary strength lies in handling radial loads efficiently while operating at high speeds, making it an ideal choice for applications demanding precision and durability in a miniature form factor.
D/W R1-4-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| R1-4 | Specific bore and outside diameter dimensions in inch series. | Defines the compact bearing size for space-constrained designs. |
| 2Z | Shielded on both sides. | Provides effective protection against contamination, enhancing bearing life and enabling a maintenance-free design. |
D/W R1-4-2Z Bearing Structural Features & Performance Benefits
- High Precision & Corrosion Resistance: The all-stainless steel construction (rings, balls, cage) ensures consistent performance and excellent resistance to rust and corrosion, suitable for harsh environments.
- Optimized Radial Load Capacity: The single row deep groove construction is engineered to carry significant radial loads relative to its miniature size, with a dynamic load rating of 37 lbf.
- High-Speed Capability: With a limiting speed of 85,000 rpm, this bearing is designed for high-speed applications, facilitated by the low-friction stainless steel cage and optimized internal geometry.
- Maintenance-Free Operation: The combination of 2Z shields and factory-applied grease lubrication seals in the lubricant and seals out contaminants, providing long service life without requiring re-lubrication.
D/W R1-4-2Z Bearing Typical Application Areas
This miniature precision bearing is ideally suited for:
- Small Precision Motors and Stepper Motors
- Medical and Dental Hand Tools
- Optical Encoders and Precision Instruments
- Small Fans and Blowers
- Office Automation Equipment (e.g., printers, scanners)
