Bearings Direct is proud to offer a variety of high-quality 3 bolt flange bearing units. These bearings are mounted within a flanged housing and are generally used when the bearing mounting surface is perpendicular to shaft access. 3 bolt flanged ball bearing units usually have a round shape with three holes for mounting or a bracket flange. For additional information about two bolt flange bearing units, our team is standing by to answer questions. Contact us today!