D/W R168 R-2Z
D/W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
D/W R168 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0007 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.25"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.375"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.125"
Width tolerance
-0.005" to 0"
Outer Ring Dimensions
Flange outer diameter
0.42201"
Flange thickness
0.03598"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
48 lbf
Radial static load rating
20 lbf
Limiting speed
60 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
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D/W R168 R-2Z Bearing Product Overview & Core Advantages
The D/W R168 R-2Z is a precision miniature ball bearing designed for demanding applications requiring high reliability and compact design. As a single row deep groove ball bearing, it excels at handling primarily radial loads and offers smooth, low-friction operation. Manufactured entirely from stainless steel, it provides excellent corrosion resistance. Its key advantages include a compact inch-sized design, shielded construction for contaminant protection, and pre-lubrication for long service life, making it an ideal choice for high-speed, precision mechanisms.
Model Code In-Depth Analysis
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer designation (Diamond / WONSTAR) |
| R168 | Bearing series and size code |
| R-2Z | R: Rubber seal (Note: Specification states Shielded, "2Z" typically denotes two metal shields. This may be a model-specific designation). 2Z: Indicates bearing is equipped with shields on both sides to protect against contamination and retain grease. |
D/W R168 R-2Z Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Built to P0 tolerance class with tight dimensional control on the bore diameter and outside diameter, ensuring precise fit and stable operation in assemblies.
- Corrosion Resistance: All critical components, including rings, balls, and cage, are made from stainless steel, offering superior performance in harsh or washdown environments.
- Contamination Protection & Long Life: The shielded (2Z) design effectively keeps contaminants out and grease in, while the CN radial internal clearance and pre-applied grease lubrication contribute to a long, maintenance-free service life.
- Compact & Lightweight: With a small bearing size of 0.25" bore and 0.375" outside diameter, and a minimal weight of 0.0007 kg, it is perfect for space-constrained and weight-sensitive applications.
D/W R168 R-2Z Bearing Typical Application Areas
This bearing is ideally suited for:
- Precision Instruments and optical devices
- Small Electric Motors and miniature gearboxes
- Medical devices and dental handpieces
- Office automation equipment (e.g., printers, scanners)
- Radio-controlled models and drones
- Various low-torque, high-speed machinery
