I did som math and found out on my lathe the following:
My lead screw has a pitch of 3mm that would be something like 8.5 TPI while the feed screw run at a ratio of 1:1 with feed lever in C
With lead screw at its lowest longitudinal feed in position C the spindel running at 75 rpm, the servo will run at some 26 rpm with the 5:1 gear box. This is om my lathe a little less than a feed of 0.003" per rev. What is your step or micro step setting? May be increase the micro step setting can help.
As the servo you are using is a hybrid stepper, you may be able to change the micro step setting to X16 or X32.
I’m not an expert and don’t know if it this will solve the problem.
My lead screw has a pitch of 3mm that would be something like 8.5 TPI while the feed screw run at a ratio of 1:1 with feed lever in C
With lead screw at its lowest longitudinal feed in position C the spindel running at 75 rpm, the servo will run at some 26 rpm with the 5:1 gear box. This is om my lathe a little less than a feed of 0.003" per rev. What is your step or micro step setting? May be increase the micro step setting can help.
As the servo you are using is a hybrid stepper, you may be able to change the micro step setting to X16 or X32.
I’m not an expert and don’t know if it this will solve the problem.