D/W R155 R-2ZS
D/W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
D/W R155 R-2ZS
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.000711 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.15618"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.31252"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.125"
Width tolerance
-0.005" to 0"
Outer Ring Dimensions
Flange outer diameter
0.35902"
Flange thickness
0.03598"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
46 lbf
Radial static load rating
17 lbf
Limiting speed
70 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 R155 R-2ZS Bearing Product Overview & Core Advantages
The D/W R155 R-2ZS is a precision miniature ball bearing designed for demanding applications requiring high reliability and compact design. As a single row radial ball bearing, it excels at handling radial loads efficiently. Its construction from stainless steel throughout (rings, balls, and cage) provides excellent corrosion resistance, making it suitable for harsh environments. The bearing is pre-lubricated with grease and features shielded seals on both sides (2ZS suffix), offering protection from contaminants and contributing to its maintenance-free operation. With a P0 tolerance class and a CN radial internal clearance, it delivers consistent performance for a wide range of precision instruments and small machinery.
D/W R155 R-2ZS Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Benefit / Characteristic |
|---|---|---|
| D/W R155 | Basic bearing designation, inch series. | Defines the core dimensions and series. |
| R | Flanged outer ring. | Facilitates easy mounting and axial location. |
| 2ZS | Contact seals on both sides. | Provides superior protection against contaminants and retains lubricant, enabling maintenance-free operation. |
D/W R155 R-2ZS Bearing Structural Features & Performance Benefits
- Compact & Robust Flange Design: The integral flange on the outer ring (Flange outer diameter: 0.35902") simplifies installation and provides secure axial positioning, enhancing assembly rigidity and accuracy.
- Full Stainless Steel Construction: All critical components—inner ring, outer ring, balls, and cage—are manufactured from stainless steel. This ensures superior corrosion resistance and makes the bearing ideal for applications exposed to moisture, chemicals, or requiring washdown.
- Shielded & Pre-Lubricated for Longevity: The 2ZS contact seals effectively shield the bearing internals from dust and debris while retaining the factory-applied grease. This combination supports a maintenance-free service life and reliable operation within the specified temperature range of -30° to 120 °C.
- Precision Performance: Manufactured to P0 tolerance class with CN radial internal clearance, this bearing offers predictable running accuracy and smooth operation, which is critical for precision instruments.
D/W R155 R-2ZS Bearing Typical Application Areas
- Precision Instruments and Medical Devices: Ideal for small motors, encoders, and sensitive measurement equipment where compact size, corrosion resistance, and reliable, low-torque operation are paramount.
- Small Electric Motors and Gearboxes: Used in miniature DC motors, stepper motors, and reduction gearboxes due to its ability to handle radial loads and its flanged design for easy mounting.
- Office Automation and Robotics: Suitable for printers, scanners, and small robotic joints where space is limited and consistent performance is required.
- Food and Beverage Equipment: The stainless steel construction and sealed design make it a good choice for applications requiring compliance with hygiene standards.
