A good quality modern Inverter Duty motor will safely run faster than any published specification might hint.
I have run a 1Hp, 2 Pole, Compact Frame, Electro Adda motor at up to 7000rpm for a couple of years in my bench top CNC mill without any issues at all.
I have run a 1Hp, 4 Pole TEE (Turkish made) motor in my Myford Super 7 at up to 3000rpm on a daily basis for over 5 years with no issues.
It's probably best to follow the data sheeps until you have enough experience to make your own decisions based upon experimentation though.