D/W R156-2ZS
D/W Series Stainless Steel Miniature Bearings
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D/W R156-2ZS Bearing Product Overview & Core Advantages
The D/W R156-2ZS is a precision miniature ball bearing designed for demanding applications requiring high reliability in compact spaces. As a single row radial ball bearing with shielded construction, it delivers robust performance for radial loads while offering excellent operational smoothness. Manufactured entirely from stainless steel and pre-lubricated with grease, this bearing provides superior corrosion resistance and is ready for immediate use, making it an ideal choice for high-precision instruments and miniature mechanical systems.
D/W R156-2ZS Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer series designation for miniature precision bearings |
| R156 | Specific bearing size designation within the series |
| 2Z | Shielded both sides providing effective contaminant protection while maintaining low friction |
| S | Indicates stainless steel construction for enhanced corrosion resistance |
D/W R156-2ZS Bearing Structural Features & Performance Benefits
Compact Design & High Precision: With a bore diameter of just 0.18748" and width of 0.125", this bearing offers an optimal solution for space-constrained applications. The P0 tolerance class and tight dimensional tolerances ensure consistent performance and precise operation.
Corrosion Resistance & Clean Operation: The all-stainless steel construction (rings, balls, and cage) provides excellent resistance to corrosion and chemical exposure. Combined with shielded both sides (2Z) and factory-applied grease lubrication, the bearing is protected from contaminants while minimizing particle generation.
Reliable Performance Characteristics: Rated for a limiting speed of 70,000 rpm and capable of operating across a wide temperature range from -30° to 120°C, this bearing delivers stable performance in diverse environments. The CN radial internal clearance provides optimal running characteristics for most applications.
D/W R156-2ZS Bearing Typical Application Areas
This miniature precision bearing is particularly suited for applications requiring small bearing dimensions and reliable performance:
- Medical devices and surgical instruments
- Precision instruments and measuring equipment
- Small DC motors and miniature gearboxes
- Office automation equipment and computer peripherals
- Optical positioning systems and laboratory equipment
- Robotic joints and miniature mechanical assemblies
