Do you have suggestions which manufacturer to looking for? I have Yako MS-L Servo drives for Y axis -> http://www.yankong.com/EN/index.php/proview-60-26.html At the moment I am not at work to give models of other devices but I can give more info if needed.
I can't recommend anything in particular, however, I use a Warp9 ESS with Mach4, a Warp9 USS with Mach3 and a Pokeys 57CNC with Auggie.
One more question - is it possible to change strength of motors so CNC turns off in case some cutted parts move away from their original position (small parts) and goes between something? I know to use tabs, but I cut plywood and it is not so stable to have good tab all the time. And too strong tabs cause too much time to remove or may damage surface of playwoon when removing.
At the moment motors needed to apply too much power to make losing steps and even when it happens it mostly turns off only one motor and all other motors continues their job which is bad.
You need to feed the servo fault condition back to Mach - that way Mach knows to pause / stop program execution if any servo has faulted.
Tweakie.