Profile: Suni Cranes Controls produces crane control equipment for E.O.T. cranes and material handling equipment. Our product line includes electro hydraulic thrustors, A.C. electro magnetic brakes, disc brakes, electro magnetic clutches, master controllers, lever limit switches, gravity limit switches and rotary limit switches. Our differential limit switch is used for controlling holding motors and closing motors for grubing cranes. Our electro magnetic clutch has an electro magnet on one side and an armature disc on the other.