CAD 81

The Canaweld CAD 81 stud welding system offers a full 5/16-inch (M8) welding capacity and is the most compact system on the market. The CAD 81 is microprocessor controlled and has an improved charging circuit with a high output transformer that maximizes its duty cycle. The system includes enhanced user feedback including safety and fault codes. The CAD 81 is sold as a complete welding system including gun, two ground cables, collets, changing tools and carrying case.


  • Capacitor Discharge Stud Welding.
  • Weld Range: #4-5/16” (M3-M8) diameter fasteners.
  • Input Power 1~115/230 A, 50/60Hz (internally switchable).
  • 81,000uf
  • Portable, only weighs 25 lbs.
  • Microprocessor controlled.
  • Ergonomic design.
  • Heavy-duty cable set.
  • Dual Ground cable.
  • Fully adjustable leg set.
  • Enhanced duty cycle.
  • Diagnostic LEDs.

Optional Accessories

  • Auto-Darkening Welding Helmet