Hydraulically Operated Thruster Brake is suitable for 400/ 440 volts, 3 phase AC supply for a wide range of drum sizes from 100 mm to 600 mm diameter. The Brake has the feature that the braking to the shoes is transmitted from the springs by means of a rigid and simple lever/ tie rod mechanism and since these brakes are in normally closed position, the release of the brake shoes is effected by energizing the 3 phase hydraulic thrusters, which over comes the spring force and the shoes are moved clear off the drum by lever/ arm linkage system, so that the drum is free to rotate without any friction. The Brake has the feature that as the lining keeps wearing out due to normal operation of the brake, the thrusters stroke adjusts itself on its own to achieve the rated torque. The Brake has part of the brake that is a self-contained unit and comprises of a centrifugal pimp and impeller drives by an electric motor, which is of. The Hydraulically Operated Thruster Brake has the feature that when the power in given to the thrusters unit the impeller spins on oil and develops a pressure heard which is impressed upon the piston and the piston is connected to the arm of the brake the arm is pushed and the brake opens up.