Rexnord 1015-G Flex Hub

Rexnord 1015G Flex Hub is a Falk G-Series stock flex hub for straight-bore gear couplings, designed to mate with mill-motor flex assemblies in industrial drive systems. It features a 3.40 in hub barrel outside diameter and a 6.00 in overall height, supporting a through bore sized nominally at 1.875 in (bore range 1.8735–1.874 in, max 1.874, min 1.8735), with an overall length of 4.10 in and a width of 4.20 in. Crafted from steel, the hub carries a single keyway (0.5 in wide, 0.25 in deep) and a net weight of about 3.00 lb, with no set screws. As a flex hub in the G-Series lineup, it is specified for 603, 604, 803, and 804 mill-motor applications (as well as 602/802 variants) within gear coupling systems, providing a robust center connection for reliable torque transmission in demanding machinery. This combination of precise bore tolerances, durable steel construction, and standard flex-hub geometry makes the 1015G a direct-fit component for Rexnord Falk gear couplings in compatible mills and drives.