Ring type electromagnetic brake

The utility model discloses a ring type electromagnetic brake which comprises a brake body, the brake body is composed of a flange plate, a spline housing, a friction plate, an armature and a brake coil, a monitoring component is installed on the side, close to installation equipment, of the brake body, and the flange plate and the end face of the installation equipment are stabilized through the monitoring component. According to the utility model, the connection tightness of the flange plate and the driving equipment such as the motor can be dynamically monitored by means of the monitoring part, so that the stable operation of the brake body is ensured, and the interference of the loosening of the flange plate and the driving equipment such as the motor on the start-stop work is avoided; the distance between the armature and the brake coil can be visually displayed by means of the measuring component, measurement can be conducted without the help of external tools, the stable brake state of the armature is