Browning BK70X1 is a fixed-pitch, single-groove V-belt pulley with a finished 1 in bore and a 6.75 in outside diameter, cast-iron construction built for durable service in small-drive power transmissions. It accepts 4L, 5L, A, or B belts and uses a 1/4 in keyway; the A-side pitch diameter is 6.20 in and the B-side pitch diameter is 6.70 in, with datum diameters of 6.000 in (A) and 6.400 in (B). The bore length is 1.4688 in, face width 0.875 in, overall width 1.2813 in, and weight 3.46 lb; the pulley is spoked and finished bore with no separate bushing required, making mounting straightforward in BK-series drives.
