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[Rozwiązany] Black grease on leadscrews  

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BMet
 BMet
(@bmet)
Trusted Member
Black grease on leadscrews

I have black grease on both leadscrews on one of my MK3+.  I'm guessing this is just dirt and grime.  I greased them some weeks ago but maybe I shouldn't have?  Suggestions?  

 

 
This topic was modified 3 years temu by BMet
Opublikowany : 02/01/2022 8:51 pm
BMet
 BMet
(@bmet)
Trusted Member
Topic starter answered:
RE: Black grease on leadscrews

JPG attached

Opublikowany : 02/01/2022 8:52 pm
kpreid
(@kpreid)
Trusted Member
RE: Black grease on leadscrews

I've heard that using the wrong sort of grease can degrade the plastic in the lead screw nuts. Maybe that's what's happening. Mine are kind of dark that way too (from before official Prusa Lubricant was a thing), but they're still working fine. (But I've purchased spare nuts in case I need to replace them.)

Opublikowany : 02/01/2022 9:01 pm
micha
(@micha)
Trusted Member
RE: Black grease on leadscrews

That's perfectly normal. As you assumed, it's a mixture of grease, dust and abrasion. No need to worry.

Better run your linear bearings greased than dry.

Opublikowany : 02/01/2022 9:03 pm
BMet
 BMet
(@bmet)
Trusted Member
Topic starter answered:
RE:

Thanks for the help. I figured it was because 2 cats, open door printing room, litter boxes in close proximity was probably the cause.

Opublikowany : 02/01/2022 10:41 pm
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