Will this motor work for a 2”x72” grinder?

[Natlek]

That's exactly the case with a 3450 rpm motor. I've been using a 3450 rpm motor for several yrs and never notice any lack of power at lower RPMs because as JT says with the finer grits used at lower RPMs full power isn't required. I use a 4" drive wheel with motor max'd around around 3800 rpm for a max belt speed of 4,000 SFPM. I doubt seriously anybody would ever notice the difference between a 1750 and 3450 rpm motor while using.

This is data for inverted rated motor......seems that power don t go down fast and Nm are pretty stable ?
For Variable Speed use...
Part Time Output when Inverter powered is...
1.87Nm - 0.75kW (1HP) x 3822RPM at 70Hz
2.62Nm - 0.75kW (1HP) x 2730RPM at 50Hz
2.62Nm - 0.375kW (0.5HP) x 1365RPM at 25Hz
2.62Nm - 0.075kW (0.1HP) x 273RPM at 5Hz
Continuous Output when Inverter powered is...
1.87Nm - 0.75kW (1HP) x 3822RPM at 70Hz
2.62Nm - 0.75kW (0.75HP) x 2730RPM at 50Hz
2.22Nm - 0.32kW (0.43HP) x 1365RPM at 25Hz
1.31Nm - 0.037kW (0.05HP) x 273RPM at 5Hz