Please help me with step motor choice.

[Lee Roberts]

Toolman there is also quite a few sticky threads in the Stepper and Servo forum if you would like a better understanding and some more reading.

Link: http://www.mycncuk.com/forums/80-Stepper-Servo-Motors

As said above, you typically cant go wrong for most machines by using Nema23's in the 3Nm flavour, basically try and find the versions with the lowest inductance and the cheapest price, right now that is the ones from CNC4YOU listed here:

Link: https://www.cnc4you.co.uk/Stepper-Motor/Nema23-3.1Nm

3 of these with p&p is still the better option than going via China and importing some, they continue to hold their price well at our purchase level.

Edit: Lee, the way you can increase the rapids is to use higher voltage drivers, look at units like the EM806 or the AM882, using software you can fine tune these drives once fitted as they are digital.

Good Luck!