What grease to I need for a geared motor?

Electric Motors and Controllers

What grease to I need for a geared motor?

Postby HypnoToad » Mon Jul 23, 2012 7:18 pm

I've been having problems with my slightly overvolted Ezee so today I took apart the motor as I was not getting any movement from it after testing it with a known working controller, so I suspected the gearing.

It turns out the gearing is ok but I was spinning the motor the wrong way, :oops:

Anyway, it was a bit of a pain to open the motor, so I figured I may as well grease the gears while it's apart.

It has nylon gears, and it looks like the existing grease in there is white (silicone?) grease.

What's the proper grease to use for this?

Thanks
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Re: What grease to I need for a geared motor?

Postby amberwolf » Mon Jul 23, 2012 11:42 pm

Whatever they used in it is probably good enough. :) Generally unless you have a specific reason to replace the grease (contamination, overheated causing liquefaction or other breakdown, etc.), I would recommend just leaving it alone as it is. If you replace it you should completely clean out all remnants of the old stuff, especially if you use something different to replace it with. It's possible for one grease to contaminate another and cause it to not do what it is supposed to anymore.

That said, I've used the red high-temperature grease for automotive wheel bearings and such, whenever I've replaced grease in something. Just remember that the stickier it is, less flowing, the more friction it adds (but it is more likely to stay in the places it's needed when stuff gets hot).
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Re: What grease to I need for a geared motor?

Postby HypnoToad » Tue Jul 24, 2012 11:03 am

Thanks for the reply, the is still plenty of the old grease in there and cleaning it out would be quite a hassle, so I think I'll just spread the existing grease more evenly in the gears and be done with it.
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