Rexnord 50R-HUB-70MM Hub

Rexnord 50R-HUB-70MM Hub is a 50R-size straight-bore hub designed for Rexnord WrapFlex elastomeric couplings in the R10 family. It provides a rigid, bore-based mounting interface to connect a motor or driven shaft to a WrapFlex element, enabling torque transmission with vibration damping. The hub features a 7.000 inch outside diameter and an overall length of about 3.03 inches, offering a compact stock hub for 50R-series couplings. Standard bore options for 50R hubs cover 20–65 mm, so the 70 mm bore designation appears outside the documented 50R bore range in Rexnord catalogs. As part of the Rexnord R10 Flex Hub family, this hub is compatible with Rexnord WrapFlex elastomeric elements and is typically obtained through Rexnord or authorized distributors. The 50R hub is described in Rexnord elastomeric coupling catalogs as part of the 50R family, designed to work with R10 Flex Hubs and WrapFlex elements to support torque transmission with damped vibration.