... kW 4.ISO9001 NGM - 4.8 diesel rail grinding machine:1:patent2:ISO90013:Technical Applicable scopeNGM - 4.8 ... type internal combustion rail grinding machine is suitable for 43 kg/m - 75 kg/ ... 3600 r/minPower: 4.8 kW2, grinding wheel bolt fastening flat wheel φ 150 x 65 x φ 553, spindle revolution: ... 90 °5, grinding head stroke 90 mm6, the machine quality: 120 kg7, outlook size: 1650 x 465 ...