welding carriage

Rail Runner Track Welding Carriage

The Steelmax® Rail Runner is a digitally controlled travel carriage designed for the mechanization of welding and thermal cutting processes. Featuring a positive rack and pinion drive system with electronic speed control, the Rail Runner can produce consistent, high quality welds and cuts in the flat, vertical or horizontal position. A multi-function LED display permits precise setting of process parameters making set up and repetition of predefined weld procedures quick and simple.

The Rail Runner is available in two versions: (i) the standard version with the integrated linear oscillator; and (ii) a basic version without integrated linear oscillation.  As a result, the Rail Runner family of track mounted welding carriages economically meets a broad array of welding and cutting applications.


  • Durable aluminum cast housing
  • Automatic arc ignition integrated with travel switch
  • Precise cross slide torch adjustment
  • Closed loop position control with encoder feedback
  • LED display with numeric representation permits presetting of all motion parameters including weave width, weave speed, side wall dwells and tractor travel speed
  • Integrated linear oscillator for weave welding and overlay
  • Electronic torch steering during weaving operation
  • Semi-Flexible Guide Rail will adhere curved surfaces with minimum radius of 16’ (5 m)
Rail Runner Technical Specifications
Dual Voltage~ 115–230 V, 50–60 Hz
Power100 W
Welding PositionsHorizontal -PA (flat), PB (horizontal vertical), PC (horizontal)Vertical – PF (vertical up), PG (vertical down)
Minimum track way curvature radius5 m (16 ft)
Torch TypeMIG/MAG
Torch diameter16–25 mm (0.63–0.98’’)
Minimum welding material thickness5 mm (0.20’’)
Pulling ForceHorizontal work – 350 N; Vertical work – 350 N
Torch Adjustment Range35 mm (1.38’’, up-down, left-right)
Horizontal speed
0–120 cm/min (0–47.2’’/min)
Vertical speed0–110 cm/min (0–43.3’’/min)
Oscillation typelinear
Oscillation pathtrapezoid, triangle, straight line
Oscillator arm stroke0–100 mm (0–3.9’’)
Oscillation width0–50 mm (0–1.9’’)
Oscillation speed0–1500 mm/min (0–59.0’’/min)
Oscillation delay at middle and tips0–5 s
Maximum oscillator pulling force100 N
Maximum permitted ambient temperature50°C (122°F)
Maximum permitted ambient humidity85%
Weight20 kg (44 lbs)


Track segment of 6.5 ft (2 m)
Magnetic base unit
Mounting Bracket for Magnet

General RFI