Designed to fit shafts ranging from 1/2 to 3-1/2 in. dia, Series BBXBLK-HCP and BBXBLK-UCP have cast iron housings, solid base, and dual seals. Height from bottom of units to shaft centerline ranges from 1-3/16 to 4 in. Incorporating one lubrication fitting, standard-duty units optimize machine efficiency and safety.