A single or multiple piece item without ball, plain or roller bearing(s). It is designed to meet various or specific conditions of mounting. For items with bearings, see bearing unit, ball; bearing unit, plain; and bearing unit, roller.
4.000 inches nominal base thickness, 7.500 inches nominal center to center distance between mounting holes along width, 4.000 inches nominal height from bottom of base to bore centerline, 2.760 inches nominal base length, 2.8470 inches minimum and 2.8480 inches maximum bore diameter