Hello to everyone!

At the moment i am trying to select a dc motor for my project. The motor has a task to make rotation in steps between 10° and 90° (it could be also 11° or 68° or another angle, which should be set). On the shaft should be mounted an encoder. This would made a closed loop system. (The motor should run till the measured angle is equal to the set angle).

The accuracy of the position should be <1°.

The dc motor, which i have been selected now, would rotate the system (shaft with encoder) with the speed of 8 rpm.

My question is, can the system with a speed of 8 rpm achieve angle for example 10° or 20° with an accuracy of < 1°?

If no, what rotation speed have to be?

Thank you in advance!