SOUTH BEND LATHE MODEL 9C ( 1937-1940 ) CHANGE GEARS PART 1

This is the start of a set of change gears for cutting threads on an 8TPI imperial leadscrew lathe these was designed for a South Bend lathe model 9C.

The teeth have 14.5 degree pressure angle
The gear has a DP of 18
The module is 1.411
True involute form
are 3/8" wide with a centre bore of 0.5625" key is 1/8"wide

Will put up in sets of 5

If you have a need for any other gears please let me know and I can look at it for you.