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Top/angled view of a round magnetic cup with central threaded stud, two hex nuts and washer on galvanized steel housing.Side view of a round magnetic cup showing central stud with hex nuts and a small bronze button with O-ring on the opposite face.Angled back view of the magnet face showing a dark magnet disc, center brass plunger with spring, and metal cup rim.Rear view of round magnet showing dark magnet disc, central spring and brass plunger inside a steel cup rim.

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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Description

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.