Active Debris Remover is a patent pending dynamic dust and contaminant shield to thoroughly protect the bearings in all conditions. The first component to ADR is the serrated profile molded into the pulley wheel. This directional ‘bladed’ design pushes any contaminants out and away from the bearing when the pulley is in motion. The second component to ADR is the stainless-steel dust shield with a unique outer edge profile to complement the function of the rotating bladed profile.