A special single or multiple-row ball bearing, rigid or self-aligning, and constructed with either a solid or hollow shank, internally or externally threaded.
0.3120 inches minimum and 0.3125 inches maximum bore diameter, 3.3755 inches minimum and 3.4995 inches maximum overall length, 0.3220 inches minimum and 0.3320 inches maximum outer ring width, 0.4320 inches minimum and 0.4370 inches maximum inner ring width, 2.9380 inches minimum and 3.0620 inches maximum length from bore center to shank end