Engineering Manufacturing Company, manufacturers & suppliers, Engineering exporters, Rubber roller manufacturers, Business, and Economy, Engineering Company, Ahmedabad, India. Air Shaft Manufacturer Differential Shaft is a sophisticated winding shaft for slitter re-winder machine, used as duplex shaft winder (center winding type). It is capable of compensating speed variation due to gauge variation with multi cores. Minimum 20 mm core width is possible. Reel holding is possible at any position across the width. No-time lost in re-positioning cores since no distance pieces are required. Shaft can run at very high speed. This shaft consists of slotted shaft, rubber bladders, hard and ground steel cage with ball type gripper. This is a lug type shaft but core holding is initiated mechanically and not pneumatically. This shaft mainly consists of slotted pipe, steel lugs, brass cam, ratchet etc. The shaft is capable of taking any challenge arising out of heavy load and speed. It is possible only because of positive gripping and core cantering achieved without any extra efforts with the help of cam/lug design.