Rail Bull 2 – All Position Welding Tractor

Rail Bull 2

Automated welding and cutting tractor – Rail Bull 2 can be custom configured for a variety of welding, thermal cutting and gouging applications on flat or curved plate, tube and pipe. It’s suitable for all welding positions on both ferromagnetic and non-ferromagnetic materials. Rail bull 2 is best choice for your cutting and welding automation process.

Linear oscillation with trapezoid, triangle and straight line paths
Min. path convex radius 5000 mm
Continuous welding
Stitch welding
Horizontal speed 10-300 cm/min
Vertical speed 10–300 cm/min

Primary features and benefits:

  • Fully modular mechanized travel tractor can be custom configured for a variety of welding, thermal cutting and gouging applications on flat or curved plate, tube and pipe
  • Linear torch oscillator to produce weave welds
  • Active compensation of torch position vertically and horizontally by means of modular automatic seam tracking system
  • Programmable path of stitch welds
  • Possibility to select one limit switch preset out of three presets available.
  • Suitable for variety of circumferential and irregular surface applications down to minimum radius of 100 mm (4”)
  • Ring tracks on diameters from 200 mm (8”) OD up to 3 m (10 ft) OD
  • Hi-Flex tracks on diameters from 1500 mm (59”) OD upwards
  • Custom rolled tracks on diameters from 3 m (10 ft) OD up to 10 m (32 ft) OD
  • Semi-flexible tracks can be flexed to minimum radius of 5 m (16 ft) without permanent deformation
  • Ergonomic remote control pendant with simple and easy to find control knobs makes adjustments possible without lifting of the operators welding hood
  • Magnetic adhesion of the pendant provides firm grip on ferromagnetic materials
  • Suitable for all welding positions on both ferromagnetic and non-ferromagnetic materials thanks to rack and pinion drive and various tracks equipped with magnetic or vacuum units
  • Rail Bull 2 produces consistent high quality welds and cuts in a fraction of the time required by manual operations
  • High speed up to 3 m/min makes plasma cutting available

Rail Bull 2 system overview

  1. Easy to upgrade modular design
  2. Continuous and programmable path of stitch welds (weld length, space between welds, backweld length, crater fill time)
  3. Linear torch oscillator to produce weave welds
  4. Three modes of automatic seam tracking (vertically, horizontally and both)
  5. Limit switch stops the arc and travels the tractor to the initial position
  6. Hand-held ergonomic control pendant (3 m cable included) with magnetic adhesion provides firm grip on ferromagnetic materials
  7. Multifunctional LED display with numeric representations for each motion parameter makes presetting and repeating of the optimum welding or cutting procedure simple and without guess work
  8. Intuitive software with user-friendly interface
  9. Automatic Arc on/off initiates welding and travel simultaneously
  10. Rack and pinion drive
  11. Convenient external 230-V, 115-V, or 42-V power supply
  12. Closed-loop position control system based on electric motor with encoder, ensures increased accuracy of speed
  13. and position
  14. Consistent heat input reduces distortion
  15. Reduces wasted filler metal – eliminates over welding
  16. Quick-clamping torch holder mechanism for different types of MIG/MAG torches with diameters of 16-22 mm
  17. (0.63-0.87”); up to 35 mm (1.38”) option
  18. Precise torch adjustment
  19. Improves working environment – removes operator from heat and fumes

Rail Bull 2 applications

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

Rail Bull 2 system build

  1. Cable anchor
  2. Carrying handle
  3. Oscillator holder
  4. 300-mm (12”) rod
  5. 300-mm (12”) geared rack with 180-mm (7”) adjustment range
  6. Slide
  7. Clamping block with levers
  8. Short rod torch holder with clamp
  9. Passive roller

OSC-8 along with Rail Bull 2 tractor

OSC-8 | Pendulum Weave Welder can be controlled manually or by using an external START-STOP switch. Using an optional freestanding support allows welding of rotating pipes or moving plates. An optional power supply allows connecting the oscillator to a 230 V or 115V power source. OSC-8 is suitable for MIG/MAG automate processes in heavy fabrication industries such as: pipeline and bridge construction, shipbuilding and tank welding.

OSC-8 | Pendulum Weave Welder

Gallery

Rail Bull 2 welding positions

Rail Bull 2 can work in all welding positions on both ferromagnetic and non-ferromagnetic materials by using rack and pinion drive and various tracks equipped with magnetic or vacuum units.

Hi Flex

Hi Flex Track is designed for use with Rail Tug and Rail Bull 2 welding and cutting tractors for lots of circumferential and irregular applications down to 750 mm (30″) radius. The Single Hi Flex Track section is 1.52 m ( 5ft) long. Any required lenght of the working track can be accomplished wit hadditional sections. Hi Flex Track can be fixed on both ferrous and non ferrous materials by means of magnetic or vacuum units.

1. TRO-0673-00-00-00-0
Hi Flex track length 1.52 m (60”) Minimum OD 1.5 m

2. DYS-0482-19-00-00-0
Bracket for magnetic unit for semi-flexible track and Hi Flex track

3. ZSP-0475-44-00-00-0
Magnetic unit

4. ZSP-0475-44-00-00-1
Heat-resistant magnetic unit

5. DYS-0582-10-00-00-0
Bracket for magnetic narrow unit for semiflexible track and Hi Flex track

6. PDS-0582-10-00-02-0
Magnetic narrow unit with hexagon

7. ZSP-0475-85-00-00-0
Magnetic pivoting unit

8. DYS-0482-19-00-00-0
Bracket for magnetic unit for semi-flexible track and Hi Flex track

9. ZSP-0523-19-00-00-0
Magnetic spacing-adjustable unit

10. DYS-0541-11-01-00-0
Bracket for vacuummodular unit for semiflexible track and Hi Flex track

11. MST-0541-10-02-00-0
Vacuum modular unit

Brochures

Make sure you are familiar with Promotech Rail Bull 2 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 Tractors

Size: 3.7 MB Type: PDF

Demo video

Technical Specification

Voltage1~230 V, 50–60 Hz
1~115 V, 50–60 Hz
1~ 42 V, 50–60 Hz
Power120 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 / 3F (contact your dealer)
PG / 3G
Fixing on pipes and round - Ring tracks
workpieces
from 200 mm (8”) OD up to 3 m (10ft) OD
Fixing on pipes and round - Hi-flex tracksMinimum curvature radius of 750 mm (30”)
Fixing on pipes and round
workpieces - Custom rolled tracks
rom 3 m (10 ft) OD up to 10 m (32 ft) OD
Fixing on pipes and round
workpieces - Semi-flexible track
Minimum curvature radius of 5 m (16 ft)
Torch typeMIG/MAG, TIG, Plasma, Oxy-fuel
Torch diameter16–22 mm (0,63–0,87’’)
fino a 35 mm (1,38”) opzionale
Horizontal pulling force 400 N
Vertical pulling force300 N
Horizontal speed0–300 cm/min (0–120 in/min)
Vertical speed0–300 cm/min (0–120 in/min)
Oscillation typeLinear
Weld pathStraight, triangle, trapezoid, square
Oscillation width0.2–11.8 cm (0.1–4.5’’)
Oscillation speed10–300 cm/min (5–120 in/min)
Oscillation dwell time at center and on ends0–5 s
Weight10 kg (22 lbs)

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