W 619/7 R-2Z
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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W 619/7 R-2Z Bearing Product Overview & Core Advantages
The W 619/7 R-2Z is a single row deep groove ball bearing designed for exceptional performance in compact spaces. Engineered from stainless steel for superior corrosion resistance, this precision bearing excels in applications requiring high reliability and smooth operation. Its key advantage lies in its ability to handle significant radial loads while its shielded (2Z) construction and pre-applied grease lubrication ensure long-term, maintenance-free service, making it an ideal solution for demanding environments.
W 619/7 R-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W 619/7 | Indicates the bearing series and size. A single row deep groove ball bearing with a 7 mm bore diameter. |
| R | Denotes a flanged outer ring. The flange (19 mm OD, 1.2 mm thick) simplifies mounting and axial location. |
| 2Z | Signifies non-contact shields on both sides. This provides effective protection against contaminants while minimizing friction, contributing to the high limiting speed. |
W 619/7 R-2Z Bearing Structural Features & Performance Benefits
- Compact & Robust Design: The single-row deep groove raceway and compact bearing dimensions (7x17x5 mm) offer a space-saving solution without compromising on load capacity.
- High Corrosion Resistance: Constructed entirely from stainless steel (rings, balls, and cage), this bearing is ideal for applications exposed to moisture, chemicals, or washdowns.
- Simplified Mounting with Flange: The integrated flange on the outer ring ensures easy and precise axial positioning within a housing, reducing assembly time and cost.
- Maintenance-Free Operation: The combination of non-contact shields (2Z) and pre-applied grease lubrication effectively seals the bearing, retaining lubricant and excluding pollutants for a long service life without re-lubrication.
- High-Speed Capability: The low-friction design, including shields and optimized grease, allows for a high limiting speed of 45,000 rpm.
W 619/7 R-2Z Bearing Typical Application Areas
The W 619/7 R-2Z is versatile and finds use in a wide range of precision instruments and small machinery, including:
- Small Electric Motors and Gearboxes
- Medical and Dental Equipment
- Food Processing and Packaging Machinery
- Precision Spindles and Office Automation Equipment
- Robotics and Miniature Linear Actuators
