Altra Industrial Motion WE4HMPB Coupling 25mm

Altra Industrial Motion's WE4HMPB is a TB Woods WE4 family shaft coupling used to connect two shafts in compact drive systems. Verified bore options for WE4HMPB include 5/8 inch (0.625 in) with a 2.6 inch hub, a 2.6 inch overall diameter, and an overall length of 1.69 inches, as well as a 3/4 inch (0.75 in) bore variant described in distributor listings. The 5/8 bore configuration identifies steel construction and a BTS-type WE4 flexible coupling shaft hub, while the 3/4 bore version is listed with an approximate weight of 1.50 pounds in some catalogs. This part is marketed under the Altra Industrial Motion umbrella as a TB Woods product, reflecting its place in the company’s compact coupling lineup. The WE4HMPB coupling provides a steel hub interface for shaft connections where space is limited and precise bore compatibility is required, aligning with standard TB Woods components for compatible shaft diameters.