Electric Rail Grinding Machine The design of FMG-2.2 electric rail profile grinder allows you accurate and stable profile grinding up to 90�°about the rail head by rotation of the machine using its turming device and its inclinable operating arm. According to customer needs, 380V three-phase motor can be selected as power or 220V single-phase power as power. With good visibility of the grinding area assures you of a high quality finish.