Koppers Industrial 3-1/2" Gear Coupling with Flanged Rigid Hub, 4-1/2" Keyed Bore, and 11" outer diameter. Manufactured by Koppers, this flange-mounted gear coupling provides a rigid connection for transmitting torque between shafts in industrial drive systems, using a 4-1/2" keyed bore to secure the mating shaft and prevent slip. The 11" outer diameter supports compatibility with larger equipment while the flange-mounted design aids precise alignment in demanding applications.
