Linear Bearings, IGUS Style !!!

by PropsFactory, published

Linear Bearings, IGUS Style !!! by PropsFactory Jun 14, 2012


Updated the LM8UU V3 (last file in the list) to simpler version.

These Linear bearings are good replacement parts for those who get bored with "NOISY" LMxUU ... I Know somehow some "Cheap Bearings" can do this ...

But !!! Instead of changing all the carriage ... switching to PLA "old style bearings", I designed "ready to print" Bearings, There is Three equivalents, LM6UU, LM8UU & LM10UU !.

They are all the same size as original bearings :)

Tooth thickness is made to print well on 0.5mm nozzle, altought a LM10UU 0.35mm will print really nice :)

More tooth is better :)

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Do you have the sketchup or scad files for the LM8UU? The inside is the correct size, but I need the outside about 1mm larger

It worked very well! I had to specify -0.1 tolerance on my Slic3r to better fit but maybe it is only for my setup. Thanks!

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Hum :) well

First thing ... simple insert the printed bearings in your rods, and "play with them" rolling/sliding, to ensure they slide well, you can also lubricant them !! the lubricant will stay between tooths !!!

<b>Simply print slow with 0 infill and 3 perimeters at least.</b>

Hum and ... that's all I think :)

<b>Tested them on my X & Y at 120mm/s infill and 200mm/s travel they do not fail :) </b>

<b>Added: LM12UU Version</b>

Do you have the sketchup or scad files for the LM8UU? The inside is the correct size, but I need the outside about 1mm larger

It worked very well! I had to specify -0.1 tolerance on my Slic3r to better fit but maybe it is only for my setup. Thanks!

Be great if this could be resized for different od stock. Particularly looking for 1/2" emt conduit. Think it's .710

hi, been using these on my prusa i2 for months now and love them, they're much more quiet and smooth than the standard lm8uu bearings on my other printer.

Ive started another project and was curious if you could make one with 11mm ID? the large rods in inkjet printers are 11mm.

Printed these in ABS:



They are now installed in my solidoodle Y axis, working great.

I'm very happy with these, and will be replacing every linear bearing in the printer with them. They were longer than original sleeve bearings, so I cut these in half after printing to match size.

Tips the get the best from these:

-end that is started on the build platform: you may need to cut some of this off as it was a bit squished up and caused extra friction.

-When you first install them there will most likely be WAY too much resistance for the motor to move properly, if at all. You'll want to spray the rods with silicon lubricant. If the printer still does not slide properly, slowly add a few drops of acetone to rods on both sides of the bearings, then slide the axis a while. It will eventually free up, you may need to drip more acetone onto the rods, and slide them more to get them right.The acetone will very slightly melt the inside of the bearings better to the shape of the rod. After the acetone treatment, give them another good dose of silicon lubricant, followed by an hour print to wear them in, I just did a dry run. The extra lubricant, followed by a dry run for a while will make sure the acetone is all gone.

But thanks! These bearings work great! sooo much better than the sleeve bearings! and they cost so little.

Would ABS be sufficient? I understand it will need to be replaced every week or so due to the oils? What if I were to use gun grease? Please respond im freaking out this is amazing. great job!

This shouldn't be a problem You should use a silicon lubricant And I don't really think you need to replace them each week ... So let's try and enjoy !

Hi! These bearings seem to be nice for a delta-type 3d printer. Is it possible to buy some? Do you sell them?

Try your local Hackerspace.....

Not selling them, but you can ask around you for people who can print you some !

What do you think about "3-in-1 Oil"? It's a bit smelly, but has low viscosity. I'm curious whether it would soften PLA or corrode stainless steel.

Any chance you can make one for a 9mm rod? I accidentally purchased that dimension from McMaster and would love to be able to use it!

I added one, it's based on a LM8UU but ID is 9mm, must be printed like this Nozzle <=0.4mm or less > 2/3 perimeters/0 Infill Nozzle 0.5mm 1 Perimeter, 100% infill.

Hmm, i would love to use a few LM12UU's. Think I could just scale a LM10UU? What would the scaling factor be? (Save me some guess-n-test) :-)

Done. Feel free to try & ask.

Made one and used it as a quick fix on Huxleys x-carriage upgrade. Still missing another "real" LM6UU.  In meanwhile finding one  a quick fix that worked!First I cut it in half and second cut to make out a sector possible to fit it in without need to take linears out. They do not press tight but takes most of the wobble out. There should be a close up picture about this in "made one" section.

What about a "Real" LM6UU dimensions ? i'll give a try ...

Did you use the scad of the original toothed bearing? Could you please post the settings you used?


I printed a bunch of these and they work great.... mine printed a bit tight so i used a piece of allthread and scraped back and forth a bunch tell the fit the rods smoothly and snug.... they are working awesome

I cannot get the 6mm STL to slice. It says that the model is not manifest. Fixing with meshlab didn't do the job (but I am no meshlab expert). Any ideas?

Very cool. Will have to give these a shot.

This parts look almost like those which I made some time ago :)


Toothed Linear Bearing
by KR2

Oh yeahh !! didn't find this one ! When I was searching for IGUS Bearings I found that this might be a nice idea :)

Adding as derivative ;)

I'd suggest white lithium grease as a lubricant. WD40 isn't a lube, and will actually eat up parts over time.

Is ABS working?

qharley - in reply to fma

ABS is an elastic polymer. PLA is the better of the two to make your bearings.

Very nice design!

Rather use Q20 if you can get it where you live 8-)

I think ABS will squeeze a bit more than PLA and tight more but let's try I have no more ABS in stock yet.

Wd40 is generall considered evil as a lubricant, as it is a digestive, how long do they last?.

I had no problem using them with WD40 for now, and sprayed a lot of it on my rods/pla parts with no problems 'til today :)

But if you're not sure ... you can use another lubricant :)