D/W R1-4-2ZS
D/W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
D/W R1-4-2ZS
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 R1-4-2ZS Bearing Product Overview & Core Advantages
The D/W R1-4-2ZS is a precision miniature ball bearing designed for applications requiring exceptional reliability in compact spaces. As a single row deep groove ball bearing, it excels at handling primarily radial loads while also accommodating moderate axial loads in both directions. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. The inclusion of shielded seals (2Z) and factory-applied grease lubrication ensures long-term, maintenance-free operation, making it ideal for high-speed, high-precision devices where reliability is paramount.
D/W R1-4-2ZS Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer Series Designation |
| R1-4 | Specific bearing size code (Bore: 0.07813", OD: 0.25", Width: 0.14059") |
| 2Z | Bearing is equipped with shielded seals on both sides to protect against contamination. |
| S | Indicates the bearing rings and balls are made from stainless steel for corrosion resistance. |
D/W R1-4-2ZS Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With an ultra-small bore diameter of 0.07813" and a weight of just 0.000511 kg, this bearing is engineered for miniature assemblies without compromising performance.
- High-Speed Capability: The stainless steel cage and optimized internal geometry contribute to a high limiting speed of 85,000 rpm, suitable for demanding high-speed applications.
- Enhanced Service Life: The shielded (2Z) construction effectively retains lubricant and excludes contaminants, significantly extending bearing life and enabling maintenance-free operation.
- Stable Performance: Manufactured to P0 tolerance class with a standard CN radial internal clearance, this bearing ensures consistent, smooth running and precise rotational accuracy.
- Wide Operating Range: The stainless steel construction and grease lubrication allow for a temperature range from -30°C to 120°C.
D/W R1-4-2ZS Bearing Typical Application Areas
This miniature deep groove ball bearing is ideally suited for:
- Precision Instruments: Optical encoders, medical devices, and laboratory equipment.
- Small Motors & Drives: Stepper motors, miniature DC motors, and fan motors.
- Office Automation: Printers, scanners, and copiers.
- Robotics & Automation: Small robotic joints, actuators, and guidance systems.
- Any application requiring a reliable, high-speed, corrosion-resistant miniature bearing.
