42 Tooth Change Gear?

Keith Douglass

Does anyone know what a 42 tooth change gear would be used for on a 9” lathe?  I don’t see that tooth count on either the 9B/C change gear chart or in the chart for metric threading.  I have one that came with a 9A I recently purchased and I believe it’s from South Bend based on the part number stamped into it.  Searching the web has turned up nothing.  Thanks!


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