Standard Hp and rpm's for 5 ton home ac condenser?

[georgen]

I replaced old motor (no spec. label) with !/3 hp 1075 rpm and 2.3 full load amps (per oem schematic). Grainger picked hp and rpm,s. Unit seems to operate ok, but air flow seems less than previous motor. Is hp sand rpms what most 5 ton home ac units use? Thanks Perhaps I am overly suspicious?