D/W RW168-2Z
D/W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
D/W RW168-2Z
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0006 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
0.15618"
Width tolerance
-0.005" to 0"
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
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In Stock
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D/W RW168-2Z Bearing Product Overview & Core Advantages
The D/W RW168-2Z is a precision single row deep groove ball bearing designed for demanding applications requiring high reliability and consistent performance. Engineered with inch dimensions, this shielded bearing excels in handling radial loads efficiently. Its compact design and construction from corrosion-resistant stainless steel throughout (rings, balls, and cage) make it ideal for applications where contamination resistance and long service life are critical. Pre-lubricated with grease, it offers a ready-to-install solution for high-speed operation up to 60,000 rpm.
D/W RW168-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Suffix / Prefix | Technical Meaning | Advantage |
|---|---|---|
| D/W RW168 | Standard inch series bearing designation with specific bore, OD, and width. | Ensures dimensional compatibility with inch-based designs. |
| -2Z | Bearing is equipped with non-contact shields on both sides. | Provides effective protection against contamination while maintaining high-speed capability and low friction. |
D/W RW168-2Z Bearing Structural Features & Performance Benefits
- Robust Single Row Design: The deep groove raceway and optimized geometry enable reliable handling of the specified radial dynamic load rating of 48 lbf and radial static load rating of 20 lbf.
- High-Speed Performance: The combination of a low-friction stainless steel cage, non-contact shields (-2Z), and pre-applied grease allows the bearing to achieve a limiting speed of 60,000 rpm.
- Corrosion Resistance & Longevity: Manufactured entirely from stainless steel, this bearing is highly resistant to rust and corrosion, ensuring stable performance and a long service life in harsh environments.
- Maintenance-Free Operation: The integral shields retain the factory-applied grease and effectively exclude contaminants, making the bearing lubricated-for-life under normal operating conditions within its temperature range of -30°C to 120°C.
D/W RW168-2Z Bearing Typical Application Areas
This bearing is ideally suited for precision instruments and compact machinery requiring high rotational accuracy and reliability. Common applications include:
- Small Precision Motors and Spindles
- Medical and Dental Handpieces
- Optical Encoders and Scanning Devices
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Control Systems
