




Round Magnetic Welding Ground Cup, 3-3/8 Inch Diameter
Heavy-duty magnetic ground clamp for welding applications. Secures to ferrous metal with powerful holding force, ideal for pipe and irregular surfaces.
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Round Magnetic Welding Ground Cup – 3-3/8" Diameter
Brief Overview
This round magnetic ground cup delivers reliable, hands-free clamping for welding operations where traditional C-clamps and grounding devices fall short. The 3-3/8-inch diameter provides substantial contact area for secure ferrous metal engagement. Pair this with magnetic tool holders or magnetic storage solutions to build a complete magnetic accessory system for your shop.
Key Features
- Powerful Ferrite/Neodymium Magnet Core – Strong holding force maintains positive electrical ground throughout welding cycles
- Galvanized Steel Cup Housing – Corrosion-resistant outer shell withstands shop environments and occasional splatter
- Threaded Stud Mount – Central mounting point with hex nut securing hardware; allows flexible positioning and rotation
- Spring-Loaded Plunger Release – Brass-colored plunger with O-ring seal enables controlled magnet disengagement without damage to work surface
- Insulating Layer Protection – Internal yellow spacer ring isolates magnet assembly and protects against electrical interference
- Shallow, Domed Design – Low-profile cup geometry grips irregular pipe shapes, corners, and surfaces that standard clamps cannot reach
Why Resellers Choose This Product
Shop Profitability:
- High-margin consumable-adjacent product with minimal warranty risk
- Appeals to small fabrication shops, mobile welders, and industrial maintenance crews
- Repeatable orders: operators value reliability and often purchase backup units
Customer Value:
- Eliminates downtime from failed ground connections during critical welds
- Reduces operator fatigue—no manual clamping or repositioning needed
- One-handed setup and release saves labor time on high-volume jobs
- Ideal for overhead, vertical, and confined-space welding where traditional clamps are impractical
Market Demand:
- Welding shops and fabrication facilities continuously stock ground clamps
- Mobile service technicians require portable, reliable grounding solutions
- Industrial maintenance teams appreciate the compact footprint and magnetic simplicity
Technical Specifications
| Specification | Value |
|---|---|
| Cup Diameter | 3-3/8 inches (85.7 mm) |
| Magnet Type | Ferrite or Neodymium composite |
| Magnet Surface | Matte-finish dark disc with radial marks |
| Housing Material | Galvanized steel, shallow domed cup |
| Mount Type | Central threaded stud with hex nut (steel finish) |
| Release Mechanism | Spring-loaded brass plunger with rubber O-ring |
| Insulation | Yellow spacer ring (electrical isolation) |
| Finish | Bright galvanized (slight reflective sheen) |
| Weight | Approx. 0.8–1.2 kg (estimated) |
Application Context
This ground cup is purpose-built for welding operations where:
- Work surface is ferrous metal (mild steel, stainless steel with ferrous base)
- Irregular geometry or pipe diameter prevents conventional C-clamp use
- Positive electrical ground contact is critical for weld quality
- Operator mobility and quick setup/teardown are valued
Not suitable for:
- Non-ferrous metals (aluminum, copper, brass without magnetic base)
- Applications requiring adjustment during operation (grounding remains static)
Closing Statement
The Round Magnetic Welding Ground Cup fills a genuine gap in shop tooling—a reliable, hands-free grounding solution for pipe and irregular surfaces. Its powerful magnet, durable construction, and simple operation make it a natural stock item for distributors serving fabrication and maintenance markets. Stock this unit confidently; it solves real problems and drives repeat orders.