gantry weight

[Boyan Silyavski]

The steppers that could change the servos on that weight will not be that cheaper than servos, drives must be AC high voltage, etc. I have not used, but the cheap servos from BST will do the job fine .

If you gear them like me on 2510 screw / 2020 or 2010 is too small for that job and price wise is same from china/ at 20t puley and inside rotating nut 30t puley, speed and resolution will be more than enough.


2510 screw makes 10mm per rev, so 3000x10x1.5=20 000mm/min max speed , so at 2500ppr / the KRS servo motors from BST/ will give you 2500ppr/10mm=250x1.5=375ppr resolution which is 1mm/375=0.0026666666666667 resolution on the axis and bigger on Z as there screw would be 1605.

So not so bad after all, 99% of people working on cnc will envy you to have such a machine at home


PS thats exactly the resolution of my motors
ps2/ 2048, not 2500 , only my z is 2500 ppr, so thats why at my video you see other number than 375 steps per rev/