Jaw Coupling Insert With Forty Two Millimeter Bore Flange And One And A Quarter Inch Bore Flange With Five Sixteenth Inch Key For Vacuum Pumps And Vacuum Trucks Replacement Part Heavy Duty F190C1255 Compatible Vacuum Gearbox

Jaw Coupling Insert for 42mm & 1-1/4in Bores, Single
✔️ 42mm and 1-1/4in bores, 1/2in & 5/16in keys, vacuum pump ready

The jaw coupling insert is a heavy-duty coupling hub designed for vacuum pumps, vacuum trucks, and gearbox systems. It features dual bore sizes (42mm and 1-1/4in) to fit common vacuum pump interfaces and is used as a replacement part in compatible gearboxes like F190-1255 family.

✅ 42mm bore flange with 1/2in key for Fruitland vacuum pumps
✅ 1-1/4in bore with 5/16in key for versatile mounting
✅ Replacement part compatible with F190-1255, FRU-F190C-1255, 29HY63, L1901255
✅ Steel construction for rugged use and easy installation
✅ Absorbs shock load, tolerates slight misalignment, and handles variable torque

💡 What is a jaw coupling insert used for in vacuum pump systems? A robust link that connects drive shafts and dampens shock.

- transfers torque between motor and pump while damping shock - supports 42mm bore with 1/2in key and 1-1/4in bore with 5/16in key - compatible with Fruitland vacuum pumps and vacuum trucks in F190-1255 family - easy direct interchange with industry standard couplings✝️