Altra Industrial Motion Corp. FC15-3-4 Coupling

Altra Industrial Motion Corp. FC15-3/4 Coupling is a FC-series jaw coupling hub from Boston Gear designed to connect shafts in mechanical power transmission. The FC15 size (FC15-3/4) specifies a 0.75 in bore and a straight jaw interface, with a keyway and a steel body finished in stainless steel, making it a robust hub for rotating assemblies. This designation also appears in several supplier records (FC15-3-4, FC15-3/4, FCR15-3-4), confirming its place in the FC-series flexible shaft couplings. In use, it functions to transmit rotary motion between shafts while accommodating minor misalignment, as described by standard flexible shaft coupling definitions. The Boston Gear FC Series hub is part of Altra's portfolio of power-transmission components, designed for interchangeability within FC-series assemblies.