Rexnord 1203216 Flex Hub RSB 1010G is a Falk Rexnord G-Series straight-bore, rough-stock (RSB) flex hub used in gear couplings to connect driving and driven shafts. The 1010G size specifies a 2.700-inch outside barrel diameter and a 1.69-inch overall length for the short hub configuration. Catalog data lists a torque rating of 1,140 Nm, a maximum bore of 50 mm, a minimum bore of 13 mm, an allowable speed of 630 RPM, and a hub weight with no bore of 4.08 kg. The part number 1203216 corresponds to Rexnord's 10013768 listing for the 1010G RSB flex hub, confirming its place in the Falk/Rexnord flex-hub family.
