These brakes are also called Normally ON type, failsafe spring loaded disc brakes. Very compact and modern in design. Foundation is not necessary as they are mounted directly on the non-driving end shaft of the motor. It consists of liner plates (friction disc) with square hole at the centre. One corresponding piece of square hub is supplied with the brake. This hub is keyed to the motor shaft and liner plate is free on the hub. Normally, liner plate is gripped between two discs with the help of spring pressure.
