Welding and Track Maintenance Equipment

Bi-Bloc Weld Shear EGH1/EGH2

The Bi-Bloc Weld Shear EGH1/EGH2 is a hydraulic rail shearing machine designed to shear off excess metal after aluminothermic welding of Vignole rails.

During aluminothermic welding, a deadhead of excess metal remains above the rail head. This was traditionally removed manually with a hammer and chisel, but the Bi-Bloc Weld Shear automates this process and removes the risk of damaging the rail. The shear is operated by a separate hydraulic unit, either with an electrical motor or a gas power engine, which makes it lighter than other sheering machines as the hydraulic unit is not mounted on top.

Technical Features

  • It is available in two versions, with the EGH1 being a narrow unit ideal for turnouts thanks to its small size, and the EGH2 being wider, bringing more comfort when shearing through the mould
  • The shear is able to produce a force of 21.5 tons under a pressure of 250 bars
  • Two blades, one on either side of the weld, move and cut off the excess metal, and adjusting the screws enables both lateral and vertical adjustments
  • A hydraulic distributor with manual control lever keeps the blades moving, and loosening the action on the distributor control lever stops the translator movement
  • Locking systems fixed under the rail head prevent the shearing machine from rising up
  • The shear is operated by a separate hydraulic unit with two power sources; either an electrical motor or a gas power engine

Advantages

  • Much safer to use than the traditional hammer and chisel method of reducing excess metal
  • With the shearing machine, there is no risk of damaging the rail
  • The adjustable blades and guiding rollers result in much greater precision than possible when removing the metal deadhead manually
  • The powerful hydraulic unit significantly reduces grinding time, saving money and decreasing downtime
  • The upper positioning of the handles on the shearing machine ensures the operator remains a good distance from the hot area, increasing safety
  • The positioning of the handles and the machine’s light weight, thanks to the separate hydraulic unit, make it easy to carry

Key Facts

Hydraulic unit with gas power engine
Engine / motor type Honda GX160
Power @ rpm 4 KW @ 3,600 rpm
Voltage N/A
Hydraulic pressure (max) 250 bar
Flow 3.6 litre / min
Dimensions 740 x 440 x 420 mm
Mass 39 kg
Hydraulic unit with electrical motor
Engine / motor type Bosch GWS 22.230
Power @ rpm 2.2 KW @ 6,600 rpm
Voltage 230V Single phase @ 50 Hz
Hydraulic pressure (max) 250 bar
Flow 6.5 litre / min
Dimensions 472 x 230 x 555 mm
Mass 20 kg

Variants

Shearing force
Hydraulic pressure (max)
Opening between blades
Inner width free space
Dimensions
Mass without blades
EGH1

Shearing force

212 kN / 21.5 tons

Hydraulic pressure (max)

250 bar

Opening between blades

175 mm

Inner width free space

210 mm

Dimensions

1200 x 460 x 440 mm

Mass without blades

45 kg

EGH2

Shearing force

212 kN / 21.5 tons

Hydraulic pressure (max)

250 bar

Opening between blades

175 mm

Inner width free space

325 mm

Dimensions

1200 x 460 x 440 mm

Mass without blades

49 kg

Welding and Track Maintenance Equipment

Bi-Bloc Weld Shear EGH1/EGH2