... Applicable scopeNGM - 4.8 type internal combustion rail grinding machine is suitable for 43 kg/m - 75 kg/m rail weld, ... , rail surface welding repair parts, such as grinding. With high work efficiency, grinding of good quality, simple operation, and convenient way ... spindle revolution: 4100 r/min4, grinding head Angle 90 °5, grinding head stroke 90 mm6, the machine quality: 120 kg7, outlook size ...