Electro-hydraulic Arm-shaped Disc Brake,port machine brake.crane brake,industial brake, ... tube and the scale of brake torque is set at one side. The brake torque is shown directly, which is convenient ... use with AC power, 3 phase, 50 HZ, 380 V (60 HZ or other voltage is also available upon request. Please ... or where there is corrosive gas or medium. Electro-hydraulic Arm-shaped Disc Brake