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9 comments
Member

Join Date: Dec 2010
Posts: 6

Light Duty Electric Motor

06/15/2012 11:10 PM

Hi,
I need an induction motor for custom purpose.My required details are given below.Kindly let me know regarding its availability and vendor details


Torque-0.05 N-m
Shaft speed-1900rpm
Shatf dia-10mm
Overall physical size prposed-150mmX 100MM
Shaft projection required from motor cabinet-40mm
Kindly review my requirment.Iam expecting your valuable replay.
Thank you

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Pathfinder Tags: indution motor
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#1

Re: Light duty electric motor

06/15/2012 11:46 PM

Have you tried using the GlobalSpec search feature?

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#2

Re: Light Duty Electric Motor

06/16/2012 1:00 AM

Have you approached any motor manufacturers?

No, I didn't think so.

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#3

Re: Light Duty Electric Motor

06/16/2012 1:09 AM

The 1900 RPM part is gong to be a deal breaker unless you use a three phase motor and VFD unit or are willing to settle for a very inefficient motor design.

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#4
In reply to #3

Re: Light Duty Electric Motor

06/16/2012 10:51 AM

Simple. Just use a six pole motor hooked to a 95 Hz power source.

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#5

Re: Light Duty Electric Motor

06/16/2012 11:03 AM

I will supply those motors to you for $10,000US each, in any quantity, cash up front, delivery within 2 years. FOB point of shipment, freight cost prepaid and added. I require a $50,000US NRE payment in advance. Non refundable but what the heck, applicable toward payment amortized against the first 100 units.

My point is, with enough time and money someone will do anything for you. The way you are going about it is not going to get you a reasonable answer.

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#6

Re: Light Duty Electric Motor

06/16/2012 11:30 AM

I think you need to be introduced to a few basics of electric motors. An induction motor is the most common form of synchronous motors. Synchronous motors get their name because the frequency of the voltage source determines the rotational speed of the motor shaft. If the rotor is not matching the rotational speed of the stator magnetic field, torques are created to accelerate or decelerate the rotor. Now all of the drag imposed on the rotor always slow up the rotor slightly from this synchronous rotational speed of this motor. This difference in rotor speed and stator magnetic field is known as slip. The design of the rotor itself determines how much more torque gets produced for how much slip. Some rotor designs have such a steep slope in slip to torque production that these motors are used as clock mechanisms.

So by designating an induction motor and asking for a specific rotational speed that's not a multiple of the power line frequency available in your area, you are requiring a variable frequency driver must be used. Now there are other motor designs that can be easily controlled to a rotational speed without changing the frequency of the voltage source.

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#7

Re: Light Duty Electric Motor

06/16/2012 6:01 PM

Or get a right sized stepper motor, with its associated controller. There is a tradeoff between step size and maximum rpm, but you can set precise speed, and have exact shaft position with little difficulty.

On the other hand, employing an attached gear, any motor rpm is quite independent from shaft speed.

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#8

Re: Light Duty Electric Motor

06/17/2012 4:29 AM

10W shaft power.

12VDC?

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#9

Re: Light Duty Electric Motor

06/17/2012 11:35 PM

Sounds like a small fan motor....

Don't they have markets where you come from?

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