... , rail surface welding repair parts, such as grinding. With high work efficiency, grinding of good quality, simple operation, and convenient ... engineType: GX200Speed: 3600 r/minPower: 4.8 kW2, grinding wheel bolt fastening flat wheel φ 150 x 65 x φ 553, spindle revolution: ... 4100 r/min4, grinding head Angle 90 °5, grinding head stroke ...