Rail wave grinding machine The GBM-7.6 rail wave abrasion grinding machine is a professional machine used for the wave abrasion and grinding of the rail top. This machine is suitable for various rails of 43~75kg/m. Model GBM-7.6 Engine Honda GXV390, 7.6kW, single cylinder, air-cooled 4-stroke petrol engine Power supply 7.6kw Spindle revolution â?¥3600r/min Profile wheel span â?¥1000mm Grinding stone feeding stroke â?¥45mm Grinding stone feeding accuracy â?¤0.11mm Weight 85KG