Model 4-500 Bench-Top Weld Head

The Model 4-500 is a fully integrated orbital tube weld head with an available component support and position tooling plate.

The Model 4-500 is designed for high-production bench welding of tubing, fittings, valves and other small component assemblies. It is ideally suited for sub-assembly of components for semiconductor, aerospace, biopharmaceutical and other industries requiring high-integrity, high-purity welded assemblies.


  • All stainless steel, ball-bearing gear-drive
  • Ceramic heat shields protect housing from heat and allow high duty cycle operation
  • Water-cooled base unit, tooling and rotor facilitates high duty-cycles and increases weld head longevity
  • A torque-limited clutch protects the drive-train from damage

Compatible with all Model 9-500/9-500C tooling, and all AMI Power Supplies.

Quick Specs

Weld Current
75 A max.
Rotation Speed 1.00 – 20.00 RPM
Electrode Size 0.040" (1 mm)
Cable Length 20 ft. (6,1 m)
Tooling Plate 12" x 12" (305 mm x 305 mm)
Tube Size Range0.093" - 0.500"
(2,4 mm – 12,7 mm)