LT-7 Submerged Arc Tractor

LT-7 Submerged Arc Tractor

  • Submerged Arc DC Wire Feeder (Track Model)
  • Acutomatic Wire Feeder
  • Reel Holds 60lb Solid Wire Coils

Technical Data

Weight: 59 kg
Dimensions (mm) H x W x D: 698 x 838 x 356
Input: 115 VAC 50/60 Hz
Wire Speed Range IPM (m/min): 100 - 400 (2.5 - 10.2)
Solid Wire Size Range in (mm): 3/32 - 3/16 (2.4 - 4.8)
Rated Output Current/Duty Cycle: 600 A/100%, 1100 A/100% (with water cooling)

The LT-7 Tractor is a self-propelled mechanized wire feeder, designed for the submerged

arc process with track system capabilities. It is self-guiding and easy to operate. It is

designed to be used with a variety of Lincoln DC constant voltage and constant current

power sources.

The rugged, lightweight unit permits quick movement to the next joint. Its compact size fits

through small openings and confined spaces.

• Calibrated tractor drive adjusts travel speed from 6 inches to 70 inches per minute (0.12

to 1.8 metres/minute)

• Control box is conveniently located on the tractor (can be mounted either left or right),

eliminating the need to return to the power source for routine procedure changes

• Exceptional tracking control and self-steering in most applications leave the operator free

for quality control, joint cleaning and flux handling

• Welds butt, horizontal fillet and lap joints to the left or right side of the tractor frame

• Close mechanical alignment between wire and joint maximizing weld quality


• Ship and barge building

• Storage tank erection