Roller chain belts should be self-tracking for the most part. If you are having trouble with the tracking of a roller chain belt, we recommend that you contact the manufacturer of that conveyor immediately. There are several things that could cause this problem. Please start by inspecting your conveyor for any Jam or debris that could be impeding the flow of the belt/material. Next ensure that your take up is in the same position on both sides (this is best done by measuring with a tape measure). Also check that your head shaft is sitting level to the conveyor and that all bearings are mounted properly leaving the shaft perpendicular to the belt travel. If you still have not found the problem, then it is time to go over your conveyor from tail to head and ensure that it is level across the width of the conveyor at every seem in the sections. A twisting conveyor frame can cause tracking issues.