Hi
   Mack3 and Spindle Problem.

I am not sure if this is the right place for my problem but I have no idea where
else to try.
I have a 3040 s Chinese Router and Milling machine purchased in 2011 it works all right except that the original spindle motor is faulty and needs replacement. I have not been able to find a replacement after many hours of searching the Internet.
The original motor was 200w Dc with an external diameter of 57mm No other markings.

My question is can I fit a 300w, 400w or 500w motor and will it work safely using my
Existing Mach 3 software?
My Mach3 software runs the machine through a 3 Axis Mini-CNC Controller purchased with the 3040 some 10 years ago. Is it safe to increase the watt rating of the spindle motor without any problems?
Many thanks for any help.
Regards
Roy