D/W R188-2Z
D/W Series Stainless Steel Miniature Bearings
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D/W R188-2Z Bearing Product Overview & Core Advantages
The D/W R188-2Z is a single row deep groove ball bearing designed for precision applications requiring high reliability and compact design. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to efficiently handle radial loads while its shielded design (2Z) and pre-applied grease lubrication ensure long-term, maintenance-free operation in demanding environments. This makes it an ideal precision bearing for applications where space is limited and consistent performance is critical.
Model Code Breakdown
| Code Segment | Meaning | Technical Significance |
|---|---|---|
| D/W | Manufacturer Series | Denotes the specific product series from the manufacturer. |
| R188 | Bore & Size Code | Specifies the bore diameter (0.25") and the overall bearing dimensions. |
| 2Z | Shielded on Both Sides | Provides effective protection against contaminants while allowing for high-speed operation. |
D/W R188-2Z Bearing Structural Features & Performance Benefits
Robust Stainless Steel Construction: All components, including rings, balls, and the cage, are made from stainless steel, providing superior corrosion resistance and durability in harsh environments.
Optimized for Radial Loads: The single row deep groove raceway is engineered to carry significant radial dynamic load ratings (139 lbf), making it a reliable choice for radial force applications.
Shielded & Pre-Lubricated Design: The non-contact 2Z shields retain the factory-applied grease, protecting the bearing from contamination and providing a long service life without the need for re-lubrication. This contributes to its maintenance-free characteristic.
Precision Tolerances: Built to P0 tolerance class and standard CN radial internal clearance, this bearing ensures smooth and precise operation, which is essential for high-speed applications up to 53,000 rpm.
D/W R188-2Z Bearing Typical Application Areas
The D/W R188-2Z is widely used in various precision instruments and compact machinery, including:
- Small Electric Motors and spindles
- Medical and Dental Handpieces
- Precision Gearboxes
- Office automation equipment (e.g., printers, scanners)
- Instrumentation and control devices
