• Duplex Engineering Works

AC DISC BRAKES, FAIL SAFE TYPE

Duplex Engineering Works manufactures various types of brakes for machines and industrial applications. Very fast operating solenoid actuated, the AC disc type spring loaded brakes of failsafe design are mounted on the shaft extension of the motor on non driving end, and no extra foundation is necessary. These work on electromagnetic principle and consists: electromagnetic fixed to the end plate; a floating plate on one side of which is fixed the armature; a friction disc with a square hole or internal spline at its centre; mounting plate; and square shaft or spline shaft. The square piece is fixed on the motor shaft, the friction disc rotates with the motor shaft and it also has an axial movement on the square shaft. Due to the spring pressure the friction disc is held tight between the mounting plate and the floating plate and when the magnet is energised the magnet attracts the floating plate against the spring pressure the brake is released. These brakes are used largely on hoists, cranes and winches in paper, rubber, steel, textile, cement, and mining industries and also in machine tools, printing machineries, etc.