If you went to the trouble of looking up a motor like this you would of saved the spec's for it
But it is Just as I thought you have no such spec's for this motor and there never where, don't quote things unless you have the information to back it up, it tells you on the name plate if you no anything about motors like this, that it is it is a 4 pole 1725RPM motor the most it could safely do is double the nameplate RPM you would have to use 200hz to get it to run at 6000 RPM and that is not going to happen with this motor not being an inverter duty motor