Industrial Atra-Flex T7FH RSB 1-3/4 Blank Bore Flex Hub

The Industrial Atra-Flex T7 FH RSB Flex Hub is a Rough Stock Bore (RSB) hub from the Atra-Flex T-Series, designed for power-transmission applications that require field machining to the final bore size. It features a 1-3/4 in (1.75 in) blank bore, representing the minimum bore before re-boring to the exact shaft diameter specified by your installation. In Atra-Flex terminology, RSB stands for Rough Stock Bore (MINIMUM RE-BORE), meaning the bore must be enlarged in the field to reach the final specification, while the T7 designation identifies the hub geometry within the T-Series lineup. This hub provides a robust interface for mounting a driven component to a shaft in industrial drives, enabling precise, customized bore sizing without sourcing a pre-bored unit and supporting reliable alignment when paired with compatible shaft hardware and fasteners. As a member of the Atra-Flex T-Series, it is designed to integrate with a range of standard components used in mechanical power transmission systems, offering a flexible, field-adjustable solution for applications where exact bore size is determined during installation.