so i am using a NEMA 17 to push a ring from stack of 10 rings( Lowest ring ). Weight of the ring is around 100g and diameter is of 20 cm the problem is that I am not getting enough torque to return back to original position and even the required speed that I need. the motor driver I am using is TB660 it my first time to work with a NEMA motor . And the movement of motor shaft is restricted to 0-90 degree. I will attach a proper photo of setup soon.