Stepper motor and the torque-speed three phase water pump induction motor characteristic in ac servo motor performance comparison

Y2 series 0.75kW (1HP) AC Motor for Speed Control
Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration 
Stepper motor's output torque increases three phase induction motor with speed decreases, and at a high speed when they fell sharply, so its maximum working speed is in commonly 300 acmotor2.blogspot.com ~ 600 RPM. Ac servo motor for constant torque output, that AC motor is, at its rated speed (2000 ac ac synchronous generator motor RPM and 3000 RPM) of less than, can be rated output torque and constant power diesel engine output ac motor above the rated speed for.