Torque limiting coupling

The invention discloses a torque limiting coupling comprising a motor and a coupling frame. The coupling frame is provided with a first bearing and a second bearing. A shaft sleeve is inserted into the first bearing, one end of the shaft sleeve is fixedly connected with an output shaft of the motor, the other end of the shaft sleeve is provided with a torque limiting shaft in an inserted manner, the other end of the torque limiting shaft passes through the second bearing to then extend out of the coupling frame, and the torque limiting shaft is also sleeved with a cover plate. The cover plateis in touch connection with an outer ring of the second bearing, and a torque adjusting mechanism for controlling torque is connected to the outer wall of the torque limiting shaft between the secondbearing and the shaft sleeve. The torque limiting coupling realizes power transmission with overload protection from a drive shaft to a rotating body with the small size and the simple structure, realizes application on a smal