The propeller drive unit, top caterpillar type or side gear torque is safe. The pitches between the chain hangers are 400 mm and its multiples. Thanks to the central lubrication unit on the system, the chain bearings automatically lubricate in the desired time interval. Torg limiter is used to protect the system in compression and strain of the drive units to protect the conveyor system. The bearings mounted on the chain are capable of operating at 250 degrees. Conveyor chain tensioner is made with spring or screw. The cardan conveyor rail is specially bent from the sheet metal. Long drive conveyor systems use more than one drive unit, in such systems a synchronous operation is provided between the drive units.