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AC Motor Advice Needed - Continuous Duty Motors 1

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staticGenerator

Electrical
Sep 16, 2018
2
Hello,

We have an application where a continuous duty AC motor is needed. The requirement will be 1/10 to 1/8 HP.

I don’t have a good understanding of electric motors or their applications. For motors in this power range I don’t find that there are many continuous duty motors reasonably priced, so not sure what my options will be. I find that brushed motors are reasonably priced, but not sure if brushed motors are ever produced that are continuous duty. I’m also finding that sources for motors (especially surplus) do not specify the motor type.

What are my options and does anyone know of a good source for continuous duty motors in this power range?

Thanks in advance
 
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Focus!
There are AC induction motors.
There are AC synchronous motors.
There are AC torque motors.
There are AC linear induction motors.
There are AC wound rotor motors.
There are AC repulsion induction motors.
There are AC and DC actuator motors.
While AC may be available, some applications may be better served by a DC motor and a suitable rectifier or drive.
There are DC series motors.
There are DC shunt motors.
There are DC compound motors.
Specials
Brushless DC motors.
Servo motors.
Motor characteristics vary fro type to type.
A few hints may help you get a reasonable answer.
Voltage?
Frequency?
AC or DC.
Speed?
Operating environment?
Size and space restraints.
And quite important, what is the application?
Part of your answer:
Motors are assumed to be continuous duty unless marked otherwise.
There may be exceptions for some special purpose motors where it is known that the motor is suitable for the intended application.
These are the ones that may get you if you are buying unknown used motors.

Bill
--------------------
"Why not the best?"
Jimmy Carter
 
Suitable little 120V, 1-phase induction motors are available new for $100-$200 and available used in all kinds of places. Try to not appear to be such an amateur/hobbiest/student and actually provide some requirements if you want a better answer.
 
HP is a secondary carachteristic of a motor, a “shorthand” way of describing torque at a given speed. The proper way to go about this is to determine the torque needed for doing the task, then the speed of the workpiece and then decide if you are going to manipulate the torque/speed of the motor selection via mechanical advantage, meaning a gearbox or belt sheave. Once you know those requirements, many of the almost countless options available to you will fall by the wayside because most motors have a relatively narrow range of applications for one reason or another.


" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden
 
Thank you all for your inputs. This provided a lot of food for thought and I’m glad I did not provide more detail initially, because I received some diverse input and broad range of ideas to consider which is what I was hoping for.

 
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