The Balcrank Actuators have a rugged design with standard 50 degree A-frame mount flange. It has a breakaway device which sets and locks the trailer brakes in the event of tow vehicle/trailer separation. The unique shock absorber/coil spring design of this Actuator provides smooth, positive stopping power, eliminating the possibility of damaging peak pressures to the system. 5,000 G.V.W.R. capacity.