Boston Gear F71840KB5H Gear Speed Reducer

The Boston Gear F71840KB5H Gear Speed Reducer is a 40:1 worm-gear speed reducer from the 700 Series, designed for compact industrial drives and reliable torque multiplication in a small footprint. This single-reduction unit uses a worm gear set with a 56C input flange and a center distance of 1.8 inches, enabling straightforward mounting to standard motors and alignment with existing gear trains. It features a 0.875 inch output shaft bore with a double solid output shaft and is configured for a B5 mounting arrangement to suit common machine layouts. The 700 Series reducers are built for dependable performance in demanding environments, delivering smooth, low-backlash torque transfer in applications where space is limited and consistent speed reduction is required; the F71840KB5H is well suited for conveyors, packaging lines, and automation equipment that rely on compact, reliable gear reduction.