Mig Welder Power Supply for Router?

I came across some Mig Welder Power Supplies and was wondering if they would make a good power supply for a router?
"Made in USA by Linde / Union Carbide. This is a Model # V1-200 MIG Welder 200 Amp Power Supply in good condition. Dial Ranges are DC 0-50 volts / DC 0-300 Amps. Overall Dimensions 35" x 42" x 44" tall."
It looks like they have more than enough power. My motors take a maximum peak of 60V at 40A ( 9A continous). I figure 50V at 40A would let me do anything I wanted with the router. But are Mig Welders Power Supplies meant to stay on that long? Man, these things are giants! They weight about 450 lbs! LOL.

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Welders usually have some kind of duty cycle rating. I have a little cracker box (50A) which is rated at 20% duty cycle - weld for 1 minute, let it rest for 5 :( .
As you plan to use yours at much less than 10% of rated output, and it seems to be industrial strength, you can almost certainly run it continuously without worry :)

robotic regards,

Tom
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