What is this red rubbery DC motor part?

Aug 16, 2007 6 Replies

(crossposted)



Looking at the 1/16" x 1/4" red rubbery extrusion from the non-functional end of a DC motor. It looks like heat shrink tubing over a much shorter extrusion, but it's softer and I don't see any opening on the end of it.



Newsgroups: alt.binaries.friends Subject: What is this red rubbery DC motor part?



What is it for? Should I be concerned about damaging it or whatever it's protecting?



Thank you.


John Doe wrote in news:0FOwi.27871$RX.10757 @newssvr11.news.prodigy.net:

Probably just a cap to keep crap from getting into the bushing at the end.

Go to the binaries group he referenced and look at the photo. It's not over the ball bearing, but closes some kind of drilling or such, next to the bearing.

Does it feel like there's something within/underneath the "red rubbery" substance? Or is it just a rubber plug?

From the photos it looks like it simply keeps that capillary closed. I'd make sure it stayed closed. If yo want to expose the end of this motor, you might replace it with a threaded hex plug or such. But that requires drilling and tapping the hole, which introduces other contaminants. Maybe just silicon sealer in place of the plug?

Good luck,

No such group on astraweb.

alt.binaries.schematics.electronic would conceivably be more suitable.

Graham

Upload to tinypic.com, post URL.

I should have checked, thanks for the heads up.

Thanks for the replies. Yeah, I guess it's a plug over a 608 ball bearing.

What's the chance of there being only a sleeve bearing and no ball bearing on the other (operational) end of that motor? I can't tell by looking, but doesn't look like there is enough room for a 608 ball bearing in there.

Thank you.

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