The machine, which is constituted by an assembly of easily replaceable modules, includes a central electric motor 9 having a drive shaft which projects from both ends of the motor 9. The drive shaft is coupled at each end to a respective reducer 18 which is in turn connected to a swingable support arm 19 by means of an axle perpendicular to the drive shaft. Each support arm 19 carries a respective cutting drum 21, the drums 21 being symmetrically disposed with respect to the motor 9. When the machine is supported at the coal face, the coal is cut by the two drums 21 simultaneously rotating in opposite directions, so that the stability during cutting is high and energy consumption is low. IMAGE
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