Boston Gear 59729 BF13-3/4-QC is a steel jaw coupling hub from the BF series (Bost-Flex) designed to join shafts with a 3/4-inch bore in a quick-connect configuration (QC). This two-piece hub requires a compatible elastomer spider to transmit torque and absorb misalignment in light- to mid-duty drives, such as conveyors, pumps, and machine tools. In the BF13 family, the unit is rated for up to approximately 160 in-lb of torque, and the WL34-1 variant code helps identify the exact catalog configuration for ordering and replacement.
