In your G Code you set the feed with the F word, for example G1 X100 F100 would move X from its current location to 100 units at a feedrate of 100 units per minute (assuming you are using G94, feed per minute)
If it is a lathe then it is normal to programme in feed per rev, G95, so your feed would be much smaller, for example a roughing feedrate I would normally use between F0.25 to F0.35. BTW that is metric units I use so if it was imperial units your feed per rev would be 25.4 times less.
Hood