I've sold a couple of those used, but not recently. They are useful primarily in slower rpm use; in a blacksmith power hammer, with a 1750 rpm motor...
What are you driving with the motor? Could you use a 1750 rpm motor and change the pulley or sprocket sizes to get the desired final rpm? It would be...
Or buy a 7.5 horsepower 1750 one and run it with a VFD at the desired rpm with reduced horsepower. get variable speed, power brakes, slow start, etc....
I spent the first 50 years of my career without a router table.
Though i often modified hand routers including making rectangular bases for some & a...
I have one. I think it says 40-70psi and it sounds and seems slower at 40psi. I think if you go lower than that it gets slower but then it just might...