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searching small motor 120 VAC/VDC, 7.5 Amp 3

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flapman

flapman

Industrial
Joined
May 3, 2002
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12
Location
ES
I am looking for that electric motor for a power tool design, so must be as small as possible (around 30 mm diam.). I need manufacturer's and detailed characteristics of the motor.
 
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Suggestion: Visit
and type Motors: Machine Tool under Product or Service, which will return 90 companies to inquire about your specific motor needs.
 
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Yes, in fact, that's a problem. It is relative easy to find a list of manufacturers for the specs I gave, but none of the motors they make are "small", for your info, the universal motor should have around 10000-36000 rpm. I have been looking in a lot of searchers with no success.
 
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Hi , I doubt if you will find a standard motor anywhere near that spec. You might have more luck with an air motor.
 
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We make motors which might suit your needs. A slotless brushless model comes to mind...similar to one already used by a major industrial tool manufacturer.

We also make others which may fall into that size category.

E-mail me if you want.


Jon
 
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Thanks a lot, jbartos, I already knew Groschopp but not the other two references. I have already e-mailed them as they don't have online catalogue.

Jon, your info can be as well very interesting for me. This motor is for a power tool project. The problem is that I don't know how to e-mail you directly.:(

I need drawing of the motor and speed-torque-efficiency curves.
 
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Universal motors are really difficult to find because all manufacturers divide their catalogues according AC or DC motors. So, where should I look for universal motors in the catalogues?. I would appreciate as well if someone can give me some sources to get more info about universal motors.
 
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Merkle-Korff has a case about that size for a dc type. Don't know how strong of a motor they can put into it. Maybe they'll build you a prototype.
 
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Thanks for the Merkle-Korff reference, their web page looks really good. However, the motors they manufacture seem to have much less power and speed than required, the other thing is that I need the motor to be universal. Notice the motor power must be 1,2 hp (900W) and speed 10,000-35.000 rpm. Dimensions are not that important, I just want it as small as possible (it is for a hand power tool, similar to a grinder), so OD can be 100mm or even higher.
 
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I think you can find universal motors from all power tool manufacturers!Or are you planning something different.We are planning a Brushless version for a similar application with a controller outside.Are you interested.We expect to roll out production during first week of July.The OD is expected to be 60mm.
 
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Probably it is true your first statement, I can find universal motors from power tool manufacturers, but...where to obtain detailed specs in the web? (I mean drawing and speed/torque/power/current characteristics).
 
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I have done some more investigation about the issue with power tool makers. You can always order spare rotors and stators separatelly without the bearings and so on, so I assume this is the reason because they don't use to give the specs. I need to know then 1.How to assembly properly both parts (with acceptable excentricity!). 2. How to know the curve characteristics before trying.
 
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Yes, that's it. Gselectric has interesting info about universal motors. I still don't know if they will have exactly my requirements, but at least I can read something about universal motors. Thanks jbartos. If you have some other similar web reference (your "etc") it will be of help for me.
 
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