D/W R4 R-2Z
D/W Series Stainless Steel Flanged Miniature Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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D/W R4 R-2Z Bearing Product Overview & Core Advantages
The D/W R4 R-2Z is a precision single row deep groove ball bearing designed for exceptional performance in demanding applications. Engineered with inch dimensions, this shielded bearing offers reliable radial load capacity and is constructed entirely from stainless steel for superior corrosion resistance. Its compact design, featuring a flange for simplified mounting, makes it ideal for applications requiring high reliability, smooth operation, and long service life within a wide temperature range.
D/W R4 R-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| D/W | Manufacturer/Series Designation | Identifies the specific product line and quality standard. |
| R4 | Bore Size Code (0.25") | Specifies the precise bore diameter for shaft fit. |
| R | Flange Design | Indicates the bearing has an outer flange for easy positioning and mounting. |
| 2Z | Shielded on Both Sides | Provides effective protection against contaminant ingress while retaining grease lubrication, contributing to maintenance-free operation. |
D/W R4 R-2Z Bearing Structural Features & Performance Benefits
All-Stainless Steel Construction: The rings, balls, and cage are made from stainless steel, providing excellent resistance to corrosion and enabling use in harsh environments, which enhances the bearing's long-term reliability.
Deep Groove Raceway & High-Precision Design: The optimized deep groove geometry allows for smooth operation and efficient handling of radial loads. Manufactured to P0 tolerance class and standard CN radial internal clearance, it ensures consistent performance and low noise.
Integrated Flange & Shields: The flange simplifies installation and axial location. Combined with non-contact 2Z shields, the bearing is pre-lubricated with grease, creating a sealed-for-life unit that is protected from contaminants and offers a high limiting speed of 48,000 rpm.
D/W R4 R-2Z Bearing Typical Application Areas
The D/W R4 R-2Z is ideally suited for a wide range of precision instruments and compact machinery, including:
- Medical and Dental Equipment
- Small Precision Motors and Gearboxes
- Optical and Imaging Devices
- Food Processing Machinery (due to stainless steel construction)
- Office Automation Equipment
- Robotics and Small Actuators
