https://www.dorrisco.com/p-1880-115tlc-series-tlc-screw-conveyor-gear-drive-201-ratio.aspx
C-Face Screw Conveyor 20:1 Ratio|115TLC Series|DORRIS
Speed Reducer with a 20:1 Ratio. Screw Conveyor C-Face drive with a removable shaft.
screw conveyorfaceratioseriesdorris