2-stage reduction, coaxial, parallel axis gearbox. This gearbox is used as a pre-reduction to a gear unit with 1/99 ratio that drives a 100 ton drawer, in order to increase the output torque. The installed motor is direct current and is capable of delivering 377 kW with a voltage of 400V at 971rpm. The pre-reducer was supplied with a special fixing plate to the base, on which the electric motor is also installed: this plate is used for a correct positioning with the main gear unit. The pre-reducer gearbox was connected to the electric motor and to the main reducer trough an elastic joint.