Choosing servos

[FiveO]

Hi, I am on my first cnc build and I need some explanation.

To calculate size of servos I use https://www.orientalmotor.com/motor-...w-sizing.html# , but it gives me lower Nm numbers than I have read in over the internet. I am confused about acceleration/deceleration t1 value, don't know whats fast or slow?

X axis

150kg mass
friction 0.1
ballscrew 25mm, 1500mm, lead 5mm
efficiency 90%
material steel
external force 100N
no transmission, direct fit
angle 0
fixed speed 210mm/s
acceleration/deceleration t1 0.2 ???
safety factor 1.5

It seems basically one 750w 2.39Nm is ok? I want to run on 2x X axis ballscrews and my gut feels minimum is 2x750W Servos. Does my values are wrong?

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[Al_The_Man]

Kollmorgen also have a graphical sizing program, for different kinds of formats, Mills, lathes etc.
Al.