3 Axis CNC router

[JAZZCNC]

Joe that 4nm 23 will struggle with 2 x 5mm pitch screws. It will turn them no problem but you'll have to sacrifice speed and with only 5mm pitch your already down on speed. I'd estimate you'll get around 4mtr/min Max rapid speed which isn't really enough for router. Idealy you'd want at least double this.

With 5mm pitch you'll struggle to get this with any single stepper motor 34 or 23 unless you go for larger motor and use ratio 1:2 ie Big pulley on motor small on screw. You need the larger motor becuase the ratio lowers torque not increases. Also you'll lose resolution but because you effectively have too much to start with this isn't problem.
My original machine ran with 6Nm with 2005mm pitch screws on 1:2 ratio running on 70Vdc and worked perfectly for well over 5yrs.

My advise is either change to 10mm pitch with small ratio if using 4nm 23 or go with twin motors.

To give you some idea I've just built 2 x 1250 x 750 sized machines that are using twin 2010 screws with no ratio applied running on single 4.5Nm 34 with 72Vdc using AM882 drives and they are tuned at 10mtr/min.