D/W R155-2ZS
D/W Series Stainless Steel Miniature Bearings
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D/W R155-2ZS Bearing Product Overview & Core Advantages
The R155-2ZS is a single row deep groove ball bearing designed for exceptional performance in compact, precision applications. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. A key feature is its shielded (2Z) design on both sides, which retains factory-applied grease and protects against contamination, making it a robust, maintenance-free solution. This bearing is engineered to handle primarily radial loads and is capable of operating at high speeds, making it ideal for applications demanding reliability and long service life.
D/W R155-2ZS Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Description | Technical Significance |
|---|---|---|
| R155 | Bore Size Series | Indicates a specific bore diameter of 0.15618" within the inch-sized R series. |
| 2Z | Shield Configuration | Denotes non-contact shields on both sides of the bearing. This provides effective protection against contaminants while minimizing friction, contributing to the high limiting speed. |
| S | Material Designation | Specifies that the ring, ball, and cage materials are stainless steel, providing superior corrosion resistance for harsh environments. |
D/W R155-2ZS Bearing Structural Features & Performance Benefits
Compact and Robust Design: The single row deep groove geometry is a versatile and space-saving solution. Combined with the all-stainless steel construction, it ensures high dimensional stability and resistance to corrosion.
Sealed and Lubricated for Life: The 2Z shields seal in the factory-applied grease lubrication, preventing lubricant wash-out and the ingress of dirt and moisture. This creates a maintenance-free system with a long operational lifespan within the specified temperature range of -30° to 120 °C.
High-Speed Capability: The low-friction design, featuring non-contact shields and an optimized stainless steel cage, allows for a high limiting speed of 70,000 rpm, making it suitable for demanding, high-rotation applications.
Precision and Load Handling: Built to P0 tolerance class with a standard CN radial internal clearance, this bearing offers reliable and consistent performance for handling its rated radial dynamic load of 46 lbf.
D/W R155-2ZS Bearing Typical Application Areas
The R155-2ZS is ideally suited for a wide range of precision instruments and small machinery where reliability, corrosion resistance, and high-speed operation are critical. Common applications include:
- Precision Medical and Dental Handpieces
- Small High-Speed Motors and Spindles
- Optical Encoders and Scanning Devices
- Food Processing and Packaging Equipment (due to stainless steel construction)
- Laboratory and Analytical Instruments
