WHAT MOTOR ARE YOU USING

[TOM 1952]

What KIND OF MOTOR ARE YOU GUYS RUNNIG TO GET ALL THESE 300 AND 400 IPM ON YOUR CNC ROUTERS?
I need a little help with this I have some nema 34 motor 640 oz they are 6 volt 2 amp induction of 12
I am using a g-540 drive which is better than the old one. 48 volt power supply . the problem is I can get the speed up to 280 ipm and after a little while running it starts to stall and I have to reduce it to 100in.
So what kind of motors do you guys have ? are they high $ ones like alpha ?
I looked at some with low induction and would match the 48 volt better would this help?
I am using mach 3 the gantry is about 80lb using 1.0 .250 ball screw direct drive.
Does anyone have some good advice
thanks

[MrWild]

more info needed. What are your lead screws? If 1/2-10 single start, you're doing good with the speeds you have. NEMA 34 motors have a slower top speed than NEMA 27