Safety chucks are square bar holders or triangular shaft end holders. Used at winding or unwinding position. Saves loading/unloading time. As driving mechanism(sprocket) does not need to be removed every time while changing core holding shaft,it gives maintenance free working. Runs with total safety due to cam mechanism. Available in tilting type and sliding type. Light duty up to 500 kgs. Heavy Duty up to 2000 kgs.