In simple terms it is a highly efficient geared motor, totaly enclosed within a steel shell. Unlike conventional drive systems, the BDL drum motor has no chains or V-belts to tighten or replace, no sprockets to align, clean or lubricate, no suppliers of bearings to grease, and does not require chain guards. lt is a simple - yet small and powerful - integral motorized pulley that is guaranteed to power your supplier of belt conveyor for years without breakdown. All gearing is made of high alloy steel, not plastic. The BDL drum motor is lubricated for life and needs no oil change. The result, almost no maintenance or downtime, which means lower costs and higher productivity.