Wood's Powr-Grip N4950 8" Hand Vacuum Cup — Professional Glass & Smooth Surface Lifting with Built-In Vacuum Indicator
The Wood's Powr-Grip N4950 is an industrial-grade 8-inch hand-operated vacuum cup engineered for safely lifting, carrying, positioning, and installing glass and other smooth, nonporous materials. Designed for professional glaziers, contractors, stone fabricators, and installers, the N4950 combines a powerful manual vacuum pump with a visual vacuum indicator that allows operators to verify holding power throughout use.
Unlike basic suction cups that rely solely on initial pressure, the N4950 features a hand pump that creates a stronger vacuum seal while allowing the user to restore vacuum without removing the cup from the surface. Its rugged metal handle, replaceable wear components, and included carrying case make it a dependable solution for daily jobsite use and long-term professional service.
Key Features & Benefits
Industrial Manual Vacuum Pump
The integrated hand pump quickly evacuates air beneath the 8-inch rubber pad to create a secure vacuum seal on smooth, nonporous materials. During extended use, additional pump strokes can restore vacuum without removing the cup from the workpiece, minimizing downtime and maintaining safe handling.
Built-In Red Line Vacuum Indicator
A highly visible red line on the plunger provides continuous confirmation of vacuum integrity. If the indicator becomes visible during use, the operator knows additional pumping or inspection is required before continuing, providing an extra level of safety during material handling.
Heavy-Duty Metal Handle Construction
The cast metal handle is designed for demanding commercial applications, offering a rigid and comfortable grip while supporting repeated lifting cycles in glazing, fabrication, and construction environments.
Replaceable Service Components
Unlike disposable suction cups, the N4950 is fully serviceable. Vacuum pads, filters, pump assemblies, seals, and other wear components can be replaced individually, reducing maintenance costs and extending product life.
Protective Carrying Case Included
Each vacuum cup is supplied with a durable storage case that protects the sealing pad and internal pump during transportation and storage, helping preserve long-term vacuum performance.
Common Applications
Glass Installation
Safely lift, position, and install windows, storefront glass, shower panels, mirrors, and insulated glass units while maintaining secure control throughout the installation process.
Stone & Countertop Fabrication
Move polished granite, marble, quartz, porcelain, and engineered stone slabs without damaging finished surfaces during fabrication and installation.
Sheet Metal Handling
Transport smooth aluminum, stainless steel, and painted steel panels in fabrication shops or construction environments.
Plastic & Composite Panels
Ideal for lifting acrylic, polycarbonate, laminated panels, fiberglass sheets, and other nonporous composite materials.
Compatible Materials
- Glass
- Mirrors
- Granite
- Marble
- Quartz
- Porcelain slabs
- Smooth sheet metal
- Plastic panels
- Acrylic sheets
- Composite panels
Technical Specifications
| Specification | Details |
|---|---|
| Model | N4950 |
| Maximum Capacity | 125 lb (57 kg) |
| Pad Diameter | 8 in. (20 cm) |
| Surface Type | Flat, smooth, nonporous |
| Vacuum Creation | Manual pump |
| Vacuum Indicator | Red-line visual indicator |
| Handle Material | Metal |
| Operating Temperature | 10°F to 120°F (-12°C to 49°C) |
| Country of Manufacture | USA |
Product Documents
- Instruction Manual (PDF)
- Troubleshooting & Maintenance Guide (PDF)
- Replacement Parts Diagram (PDF)
Frequently Asked Questions
Can the N4950 be used on textured or porous materials?
No. The vacuum cup is designed for clean, smooth, nonporous surfaces that can maintain an airtight seal.
How do I know the vacuum is still secure?
Monitor the red-line indicator during use. If it becomes visible, restore vacuum with additional pump strokes before continuing.
Are replacement parts available?
Yes. Wood's Powr-Grip offers replacement pads, filters, pump assemblies, seals, and other service components to maximize the lifespan of the vacuum cup.
Does the N4950 include a carrying case?
Yes. Every N4950 is supplied with a protective carrying case for transportation and storage.