Koppers 644101 Flanged Coupling With Flex Hub is a shaft‑to‑shaft connector that uses a flanged interface paired with a flexible hub to absorb minor misalignment and dampen vibration in driven equipment. Size: 1-1/2", Bore: 3/4" are listed for this model, guiding compatibility with corresponding shafts and mounting flanges. This configuration offers a secure flange mount on one side and a flexible hub on the other to help reduce torsional stress during operation in small to mid-size drive systems.
