W 619/7-2Z
W Series Stainless Steel Miniature Bearings
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W 619/7-2Z Bearing Product Overview & Core Advantages
The W 619/7-2Z is a single row deep groove ball bearing designed for high precision and reliable performance in compact spaces. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to efficiently handle radial loads while also accommodating moderate axial loads in both directions. The inclusion of shielded seals (2Z) and pre-applied grease lubrication ensures long-term, maintenance-free operation, making it ideal for applications demanding high reliability and cleanliness.
W 619/7-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W 619/7 | Designates a single row deep groove ball bearing series with a 7 mm bore diameter. |
| 2Z | Signifies bearings with shields on both sides. This provides effective protection against contamination while allowing for higher limiting speeds compared to contact seals. |
W 619/7-2Z Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components, including rings, balls, and cage, are made from stainless steel, providing superior corrosion resistance and suitability for harsh environments.
- Optimized Load Capacity: The deep groove raceway and single row design are engineered to support significant radial dynamic load ratings (207 lbf) and accommodate bidirectional axial loads.
- High-Speed Capability: The combination of a stainless steel cage and non-contact shields contributes to a high limiting speed of 45,000 rpm, enabling use in demanding, high-rotation applications.
- Maintenance-Free Operation: The shielded design retains the factory-applied grease, protecting against lubricant loss and contaminant ingress, resulting in a long service life with minimal maintenance.
- Precision & Stability: Manufactured to P0 tolerance class and standard CN radial internal clearance, ensuring consistent performance, smooth operation, and reliable positioning.
W 619/7-2Z Bearing Typical Application Areas
This bearing is ideally suited for a wide range of applications requiring compact size, corrosion resistance, and high-speed performance, including:
- Small Electric Motors and Gearboxes
- Medical and Dental Equipment
- Precision Instruments and Optical Devices
- Food Processing and Packaging Machinery
- Office Automation Equipment (e.g., printers, scanners)
