Rail Tug | Welding and Cutting Tractor

Rail Tug | Welding and Cutting Tractor

The Rail Tug is a digitally controlled tractor designed for the mechanization of welding and thermal cutting processes. Featuring a rack and pinion drive system with electronic speed control, the Rail Tug creates weld bead geometry which is exact to your specifications, reducing costly over welding and decreasing filler metal usage.


Continuous welding
Horizontal speed
10–200 cm/min
Vertical speed
10–200 cm/min
Ring tracks from 200 mm (8”) OD up to 3 m (10 ft) OD
Hi Flex Track
min OD 1500 mm
Custom rolled tracks from
3 m (10 ft) OD up to 10 m (32 ft) OD
Min. path convex radius for semi-flexible tracks is
5 m (16 ft)

Key features

Rail Tug | Welding and Cutting Tractor
The Rail Tug can be used with semi-flexible track for plate and tank work with a minimum radius of 5 m (16 ft) or adapted to bent ring rail for pipe and tube applications. Standard ring rails are available for tube diameters from 200 mm (8”) up to 3000 mm (10 ft), whereas custom rolled tracks can be used for tube diameters between 3 m (10 ft) and 10 m (32 ft). Using a vacuum system allows the track to be clamped to non-ferrous surfaces (stainless steel, aluminum etc.) The Rail Tug economically meets a broad array of welding and cutting applications on flat or curved plate, tube and pipe.


  • Trailer manufacturing
  • Truck tanks
  • Oil tanks
  • Water storage tanks
  • Pressure vessels
  • Bridge girders
  • Structural steel
  • Structural towers
  • Panel welding
  • Transformers
  • Shipyards
  • Any application demanding long continuous welds

Primary features and benefits:

  • Compact, lightweight design
  • Closed-loop speed control system based on electric motor with encoder – ensures increased accuracy of speed
  • Rack and pinion drive
  • Consistent heat input reduces distortion
  • Reduces wasted filler metal – eliminates over welding
  • Digital LED display for presetting of travel speed
  • Automatic arc on/off initiates welding and travel simultaneously
  • Oxy-fuel and plasma cutting possible with optional accessories
  • Suitable for variety of circumferential and irregular surface applications down to minimum radius of 100 mm (4”)
    1. Ring tracks on diameters from 200 mm (8”) OD up to 3 m (10 ft) OD
    2. Custom rolled tracks on diameters from 3 m (10 ft) OD up to 10 m (32 ft) OD
    3. Semi-flexible tracks can be bended to minimum radius of 5 m (16 ft) without permanent deformation
  • Quick-clamping torch holder mechanism for different types of torches with diameters of 16–22 mm (0.63–0.87”); up to 35 mm (1.38”) option
  • Precise torch adjustment with screw drive cross slide
  • Convenient external 85-250V power supply
  • Improves working environment – removes operator from heat and fumes
  • Travel direction switch (Forward/ O /Backward)
  • Display

Suitable for variety of circumferential and irregular surface applications

Welding and cutting applications down to minimum radius of 100 mm (4”)

High speed up to 3 m/min makes plasma cutting available

Precise torch adjustment enables double bevel cut

System build

Standard shipping set

  • welding carriage
  • metal box
  • cross slide assembly
  • short rod torch holder with clamp
  • cable anchor
  • power cord 3 m (10 ft)
  • arc ignition cable of 6.5 m (21 ft)
  • 3 mm hex wrench
  • 4 mm hex wrench
  • operator’s manual

System build

  1. 540 mm (21”) rack
  2. Rack Locking Levers
  3. Control panel
  4. Rack adjustment knob
  5. 300 mm (12”) rack with 180 mm (7”) adjustment
  6. Rack holder
  7. Clamping block with levers
  8. Short rod torch holder with fits-all clamp
  9. Guiding Roller
  10. Carrying handle
  11. Adjustable Roller
  12. Arc ignition socket

Ring tracks

Rail Tug can work in various welding positions on both ferromagnetic and non-ferromagnetic materials by using rack and pinion drive and various tracks equipped with magnetic or vacuum units.

Available on request, diameter can be custom configured within the range from 200 mm OD up to 3000 mm OD (from 8” to 10 ft). Ring tracks can be equipped with various supports depending on the customer’s needs.

Support with bolts

Support with magnets

Support with plastic feet

1. Semi-flexible track length 2 m (6.5 ft). Minimum 5 m (16 ft) curvature radius required

2. Bracket for vacuum modular unit for semi-flexible track

3. Bracket for magnetic unit for semi-flexible track

4. Aluminum track support for semi-flexible track

5. Bracket for magnetic narrow unit for semi-flexible track

6. Magnetic narrow unit with hexagon

7. Vacuum modular unit

8. Magnetic spacing-adjustable unit

9. Magnetic pivoting unit

10. Steel track suport for semi-flexible track

11. Heat-resistant magnetic unit

12. Magnetic unit

13. Bracket for magnetic unit for semi-flexible

Semi-flexible tracks can be custom rolled permanently within the radius range from 1.5 m up to 5 m (5 ft up to 16 ft)

1. Rigid track length 2 m (6.5 ft)

2. Bracket for magnetic unit for rigid track

3. Vacuum modular unit

4. Magnetic narrow unit with hexagon

5. Magnetic spacing-adjustable unit

6. Magnetic pivoting unit

7.Heat-resistant magnetic unit

8.Magnetic unit


Make sure you are familiar with Rail Tug | Welding and Cutting Tractor brochure including technical data and detailed information about this product. Should you have any further questions we encourage you to send us an enquiry.

Welding & Cutting Carriages

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Technical specification

 Rail Bull | Welding & Cutting Track Carriage
Voltage1~ 115–230 V, 50–60 Hz
42 V, 50–60 Hz
Power100 W
Welding position (according to EN ISO 6947 and AWS/ASME)PA / 1F / 1G
PB / 2F
PC / 2G
PD / 4F
PE / 4G
PF / 3G
PG / 3G
Torch diameter16–22 mm (0.63–0.87”); up to 35 mm (1.38”) option
Minimum radius of curved workpiece surface5000 mm (16 ft)
Minimum workpiece thickness5 mm (0.2”)
Horizontal pulling force350 N
Vertical pulling force150 N
Cross slide adjustment range0–35 mm (0–1.38”) up‑down, left-right
Horizontal speed0–120 cm/min (0–47.2 in/min)
Vertical speed0–110 cm/min (0–43.3 in/min)
Weight20 kg (44 lbs)
Welding settings storage1 (last used)
Oscillation typelinear (0 - 100 mm)
Oscillation (weaving) patterntrapezoid, triangle, straight line
Oscillation width0–50 mm (0–1.9”)
Oscillation speed0–1500 mm/min (0–59 in/min)
Oscillation delay time0–5 s (at external and central points)
Product Code (115–230 V, 50–60 Hz, plug EU)WOZ-0482-10-20-01-0
Product Code (115–230 V, 50–60 Hz, plug UK)WOZ-0482-10-10-01-0
Product Code (42 V, 50–60 Hz)WOZ-0624-10-04-00-0

Standard accessories:

Power cord 3 m (9,7 ft)
PWD-0466-18-00-00-0 (230 V CEE)
PWD-0466-16-00-00-0 (115 V USA)
PWD-0466-23-00-00-0 (230 V UK)

Dual arc ignition cable 6.5 m (21 ft)

540 mm (21’’) Geared Rack

Cable anchor


300 mm (12”) rack with 180 mm (7”) adjustment

Clamping block with levers

Short rod torch holder with fits-all clamp

Optional accessories:

Gear Rack Adjustment Tool

700 mm (39.4”) Geared Rack

Counterweight 1.3 kg (2.9 lbs)

1000 mm (39.4”) Geared Rack

Large Counterweight 2,6 kg (5,7lbs)

16-22 mm Torch Clip

22-35 mm Torch Clamp

Standard Torch Holder 28–35 mm (1.10–1.38’’)

203 mm (8”) rod

Standard Torch Holder with angle adjustment

Precise Torch Holder with angle and height adjustment

Machine Barrel Torch Holder 30 mm (1.18”)
Machine Barrel Torch Holder 35 mm (1.38’’)

Precise Machine Torch Holder 30 mm (1.18”)
Precise Machine Torch Holder 35 mm (1.38”)

Manifold 2×2
Manifold 2×3
Manifold 3/3