Author Topic: Source of Maxon/Faulhaber 4:1 Gearheads  (Read 8667 times)

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reinhardtjh

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Re: Source of Maxon/Faulhaber 4:1 Gearheads
« Reply #180 on: July 12, 2021, 04:46:49 PM »
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How can you tell a Maxon 1017 on Ebay?  It is the 118391 number?  I am either looking in the wrong place or at the wrong time.
John H. Reinhardt
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mmagliaro

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Re: Source of Maxon/Faulhaber 4:1 Gearheads
« Reply #181 on: July 12, 2021, 05:14:13 PM »
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How can you tell a Maxon 1017 on Ebay?  It is the 118391 number?  I am either looking in the wrong place or at the wrong time.

You can only really tell if the seller puts the motor next to a ruler and shows you, or tells you in their description.  The numbers on the sides of surplus Maxon motors are usually NOT stock numbers you can look up in the Maxon data sheets.  They are often proprietary numbers put on there for a specific run of the motor for a large industrial customer.  And if you call Maxon and ask them to give you the specs on any of these proprietary numbered motors, they won't (I tried it).
The 118391 is a 1017.  But there could be many 1017's, all with different numbers.  These motors tend to appear on eBay in waves as some large customer dumps their surplus and a flurry of vendors gobble them up and resell them on eBay (or it's just one seller who operates under 5 different IDs... there's a lot of that going on too).

For the record, Faulhaber generally doesn't work this way.  A Faulhaber 1016 always says "1016" right on the side of the case.

Another way you can sometimes tell is if they describe the Maxon as an "RE10", which is a 10mm diameter motor.  You will still have to look at the description to see if they who you how long it is. 

And another thing!  There is also no way to tell the voltage unless the seller tells you (and then, if it's from China, beware of the motor voltage being totally wrong).  These motors come in 3, 6, 8, 9, 12, 15 and other voltages.  You won't really know what you've got until you get some and test how fast they spin at various voltages.
« Last Edit: July 12, 2021, 05:34:11 PM by mmagliaro »

reinhardtjh

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Re: Source of Maxon/Faulhaber 4:1 Gearheads
« Reply #182 on: July 12, 2021, 08:10:50 PM »
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Thanks Max.  Unfortunately, I had a feeling that's how it was.  I have seen occasional "RE10" motors listed.  There's one there now for $50 (IIRC) which is pricier thatn I'd like for an experiment.  I'll just keep an eye out.


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mmagliaro

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Re: Source of Maxon/Faulhaber 4:1 Gearheads
« Reply #183 on: July 13, 2021, 02:21:11 AM »
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Thanks Max.  Unfortunately, I had a feeling that's how it was.  I have seen occasional "RE10" motors listed.  There's one there now for $50 (IIRC) which is pricier thatn I'd like for an experiment.  I'll just keep an eye out.

Yes, "keep an eye out" is the only way.  These motors come and go sporadically, with the good deals coming less often than the bad deals, of course.  And they are often mislabeled, or not labeled in a way that makes them easy to find in eBay searches.
You have to be really patient and persistent.  Of course, if you are patient, you can get them for $20 or less instead of $100 and up direct from Maxon.