Industrial ATRA-FLEX A1 28MM Coupling Hub 28MM

The Industrial ATRA-FLEX A1 28MM Coupling Hub is the A1-size hub in the ATRA-FLEX A-Series jaw coupling family, featuring a 28 mm shaft bore. This hub is the male element that accepts a matching elastomer flex insert and a drive ring to complete a three-piece jaw coupling, enabling torque transmission between misaligned shafts. When paired with corresponding ATRA-FLEX A-Series components, the assembly provides a compact, robust connection that accommodates angular and parallel misalignment while helping damp vibration and shock loads common in industrial drives. The A1 size denotes the specific bore and footprint within the A-Series, allowing designers to select the correct hub to match their motor or gearbox shaft diameter. Typical applications for ATRA-FLEX jaw couplings include conveyors, pumps, fans, machine tools, and packaging equipment where reliable, removable couplings are preferred. This 28 mm bore hub is intended to mate with the compatible A-Series flex insert and drive ring to form a complete coupling assembly suitable for moderate torque transmission in general-purpose drives.