Linear Bearing replacement

[rcrescencio]

Where can I get extra bearings? On a couple of my bearings the balls fell off.

Thanks,

[holmes4]

eBay.

[mdfast1]

Where are you located, I can ship some your way if you are close. I'm in CA.

And to clarify, are are looking for LM8UU? or the larger LM12UU? I only have LM8UU since I have a PB Original.

edited to reflect LM12UU in lieu of LM10UU

[holmes4]

The larger would be LM12UU.

[REPRAP SQUAD]

I'm in Oregon and 6 - 8mm lmu bearings stolen. Anyone know of a good place besides eBay. My PayPal acct is not working. Thanks. Oh ya and I don't have much cash so nothing crazy expensive.

[mdfast1]

[REPRAP SQUAD]

My roommate apparently had a party while I was out of town and my valuables went missing. Including some parts and some cash.

[javierdiaz]

Hey, I also need 2 LM8UU 8X15X24, I'm at mexico city

[frank133]

Try look up linear bearings at Motion Marketplace

[TutherJay]

[REPRAP SQUAD]

Which ones do you have lme12uu or lm12uu. I've noticed a huge difference in rod quality lately. Now I'm essentially only buying from Tacoma Screw. Top notch rods.

[mechanizedmedic]

[TutherJay]

[REPRAP SQUAD]

I wish I had a stash. I have 4 of them as spares for my dual e plus. At one time I was thinking about trading them for some lm12uu because I have a custom aluminum milled setup that was accidentally milled to the older pb lm12uu specs.

I've been real happy with the lme122uu that I bought from Printrbot about a year ago.

[REPRAP SQUAD]

[TutherJay]

Um - reality check here.

Seems to me, pretty much intuitively but not too illogical, that if these things could just get the proper clean and lube, they'd operate smoothly. I mean, mine are AWFUL, but they're maybe halfway improved since I TRIED to spray lubricant into them and work them on the rod. I've always been careful when starting them onto a rod, as that warning was out there somewhere when I was building my kit. So when this got my att'n again, I looked carefully at the little beggars, and don't SEE anything missing. Could I be fooled, I wonder?

Well, what about total submersion and working on a rod? Anyone have success with such an approach, or is this just one of those things that has slipped past the QC inspector in Taiwan, and needs simply to be replaced?

What I'm envisioning is something akin to bearing packers like for wheel bearings (like back in HS shop, y'know? Oh - that was before your time, I bet.) but with the appropriate viscosity.

Who's to say the next set I get will be any better??? Haven't you heard of Murphy's Law ? ? ? Just what did you think the "m" is for, anyway?

jm

[plexus]

My next printer upgrade is replacing the XZ with a linear rail and bushings. I have a PB+. I have already replaced Y with a linear rain which uses flate sheet bushings. its super great. I want to put the same linear rail on X and replace the 12mm bearings with bushings. I have all the parts including the bushings its just a matter of designing the parts and printing them. it will be a fair amoint of work. maybe a winter project.

[RetireeJay]

IMHO, the #1 cause of noisy and rough linear bearings is that - when you have two bearings with parallel rods - the rods passing through the bearings are not spaced correctly. These bearings are trying their darndest to hold the rod in position within microns, and if your assembly is insisting that the rods to be a few microns closer together, or farther apart, or twisted relative to the plane of the bearings, then the bearings complain mightily. You are creating very large lateral forces on the bearings if the rods are not spaced exactly right.

At least this is what was happening on my 'bot. YMMV.

[EddB]

I try to keep all my rods as clean as possible. X rods/bearings build up dirt on the extra greese on the rod ends rapidly. Out of site is out of mind.
Anyhlw, I saw the video from PB showing how to use hairspray on the PB Simple Metal bed to assist ABS to stick to the bed.

Hair Spray Adhesive for ABS with the Printrbot Si…: http://youtu.be/WvvBX3LQ5As

I used to use a glue table for spray glue to attach patterns to wood for scrolling. The overspray grew so thick against the sacrificial cardboard and acted like a magnet to dirt, sawdust and dog hair (no dog there!).
The video made me cringe since the hairspray was sprayed directly on the printer bed. Bed was cleaned and sprayed before each print. Hairspray is a water soluable adhesive and will do the same thing. Build up adhesive from overspray, dirt and hair real quick.
For some reason I thought beople were taking a glass (or other) bed off their printer, spraying it and then put it back on to print. That's what I would do for that method. Otherwise the printer, rods and bearings are getting an overspray of hairspray as well.
I'm not saying this is what happened to anyone's specific printer, but talk of the faulty bearings reminded me of this. Keep em greased and clean.
Ed

[TutherJay]

Reminds me of a small radio station I used to run, where they had applied their own egg-carton shaped foam sound deadening all around the studio rooms, stuck w/ two plus one M spray adhesive. Problem is, the ceiling kept coming loose, and they had repeatedly attempted to stick it back up w/ the spray. Never occurred to them that all the electronic equipment, computers and otherwise, had fans running and, as they didn't bother to ventilate appropriately, managed to inspire amazing amounts of STICKY GOODNESS!!!

So perhaps I will find some minor amusement w/ the video you suggest - if and when I need my spirits buoyed.

Thanks, though, for waving the red flag, for those to whom this applies!!!!

(So I don't suppose YOUR ball team being in OUR yard tomorrow means anything in YOUR life, does it? You wear a blue cap???)

[thawkins]

[TutherJay]

?didn't anyone ever tell you "you can't do that!" ???

[thawkins]