Industrial FC30X1 3 8 CPLG 08288 NSMD Coupling

Boston Gear FC30X1 1-3/8 in bore jaw coupling half, catalog 08288, is the FC30 family’s 1-3/8" bore half-hub. This steel half coupling is designed to mate with the corresponding FC30 jaw coupling half to form a flexible shaft connection that accommodates minor misalignment in power-transmission systems. Key dimensions include a 1-3/8" bore, an outside diameter of 3.0", a hub diameter of 2-3/4", and a through-bore length of 2.156", with an overall length (OAL) of 5.48". It is rated for a maximum speed of 3,450 RPM, reflecting its suitability for general mechanical drive applications at moderate speeds. Catalog 08288 specifically identifies the FC30-1-3/8 configuration in steel, offering a durable interface for motor-to-driven-shaft connections in machinery such as conveyors, pumps, and other equipment where a compact, reliable coupling is needed. The FC30 series is designed for light- to medium-duty service, delivering a simple, robust solution when precise alignment is possible only within modest tolerances. When paired with the matching half, this hub provides a straightforward two-piece assembly for quick installation and serviceability in a wide range of industrial drives.