... 1:patent2:ISO90013:Technical Applicable scopeNGM - 4.8 type internal combustion rail grinding machine is suitable for 43 kg/m ... fat edge, rail surface welding repair parts, such as grinding. With high work efficiency, grinding of good quality, simple operation, ... and repair the necessary tools.Second, the main technical parameters1, internal combustion engineType: GX200Speed: 3600 r/minPower: 4.8 kW2, ...