Is the stepping motor fast?
The step motor speed is not very fast, but the gearbox can be carried out. Its greatest feature is the ability to pinpoint control. The high speed can choose brushless dc motor, tens of thousands of revolutions per minute is fine.
Look at your conditions of use, if it is 1000 RPM, stepper motor you can have a try, it is commonly used at low speed, with the speed increase, the output torque is becoming more and more small, on the 1500 r is almost no power, can say to 2000 turn above is not practical. Its main feature is low speed, rapid stop, positive and reverse, position control.
Can use the stepper motor with feedback so that the vector control of ac servo technology, the speed can be in commonly 2000-4000, and torque constant, can carry out high speed and reversing control.
The speed is much slower than the dc motor, and the 3, 000 RPM is already pretty fast. Main reason is that step motor running with pulse voltage, and the pulse voltage is constantly changing direction, the current in the coil and the voltage of the frequency change faster, the faster the motor turns, because of the coil in the direction of current change constantly, and the current in the coil direction change the faster, the faster the motor rotation speed, produce the greater the back emf, the smaller torque at the same time, until the frequency to a certain degree, the friction torque of the motor can't overcome, motor stop running, at the same time, the motor with clamor (electromagnetic noise).
