A mowing machine, more particularly a front mowing vehicle, has a tractor driven by an internal combustion engine and a grass collecting system as well as with a gear unit which can be coupled to the tractor via a drive shaft and which has a first gear shaft for driving a cutting unit mounted at the front of the vehicle. The grass collecting system has a lift- and tilt cut-grass collecting container mounted at the back of the vehicle, and a turbine for aspirating the cut grass from the cutting unit and conveying the cut grass into the cut-grass collecting container. For driving the turbine a hydraulic oil supply device is provided in an oil circuit including an oil tank. The oil conveying device is coupled by a second gear shaft to the gear unit which is driven by the tractor.
