Thruster is an electro-hydraulic device which is used for the power conversion from electrical to mechanical to move the brake shoe for stopping a rotating device. It is an essential device for the overhead crane system which is capable to produce a large braking force. It consist of various components such as a piston mechanism, high performance electric motor and a control unit. The complete assembly of the thruster is enclosed into a heavy duty metal casing which is fabricated by using premium grade engineering materials having higher tensile and compressive strength. It consumes very less power and requires low maintenance.