LMU8 Linear Bushing - Misumi


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Current Stock: 219

Free shipping in Canada for orders over $140 before tax. (via Canada Post)

Misumi LMU8 Linear Bushing - Single Type

Type Straight Motion Linear Motion
Style Standard Outer Cylinder Material [Steel] 52100 Bearing Steel
Outer Cylinder Surface Finish None For Shaft Size(mm) 8
Overall Length L(mm) 24 Lubrication Type Standard
O.D. D(mm) 15 Type Straight
Length Single Ball Recirculating Type Single
Basic Dynamic Load Rating (Details)(N) 265 Basic Static Load Rating(N) 380
Precision High Grade Inner Contact Circle Tolerance (Negative Side)(mm) -0.009
Eccentricity(µm) 12 Ball Material 52100 Bearing Steel
Retainer Material Plastic (Duracon M90 Equivalent) Seals With Seal
Greased filled Standard (Rust Prevent Oil) RoHS 6

Misumi precision linear rods also available.

Package contents:

  • 1 LMU8 linear bushing

Buy a Misumi LMU8 3D printer linear bushing in Canada without the surprise cost of the exchange rate!



4 out of 5 (based on 6 ratings)
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Misumi Bearings and rods

To tell you the truth i have installed the rods and bearings, greased the bearing with super lube they fit great but i find they are louder than the stock one's and the print quality is no better than the stock ones, theses are not worth the money just use the stock ones just grease them at lease once a year and they will last a really long time Just stay away from theses to pricey for what you get they should be half the price of what they are.
Posted by jeremy, December 22, 2023

Just buy these

Honestly if you are building a 3D printer or any other CNC machine, save yourself the time and effort of continually disassembling and reassembling your machine replacing cheap bearings and just buy these.
Posted by Colton, January 24, 2022


Genuine Misumi LMU8 … it is the bearing you need on a Prusa. I should of buy them long ago so he print quality got improved a lot!
Posted by Max, September 30, 2021


Ive built 14 printers with these rails and bearings. The trick is to make sure you prep the bearing right before installing. never slide the bearing over the rail before prep because there can be dirt or debris in the housing that can cause permanent damage to the surfaces. Ive been using break cleaner. Spraying the string of balls at a 45 degree angle will rapidly circulate them bringing any particles out. I then use compressed air to do the same thing to jet out any remaining oil or dirt. be sure to do this in a well ventilated area or wear a P100 mask, break clean and other solvents are extremely harmful to breath in. Pack with them with a pea size dab of super lube or some other silicone based lube. Use 2 rods, one entering each end of the bearing to compress the grease hydraulically forcing the grease into the tracks of the balls, then run the bearing up and down the rod to fully circulate the grease. Wipe away any excess. The result is a silky smooth slide with very minimum lash! There is a small amount of preload and it is very consistent using the more expensive H5 rails. Spend the money, do not use generic rails, you would be wasting a perfectly good engineered to perfection bearing otherwise!
Posted by LeckieTech, August 13, 2020

These bearings will change your machine

Its INCREDIBLE how quiet my machine is now. I thought it was on stealth mode when i first tried the printer after installing all of these. Just dont forget to clean first with 99% alc for 30 min, then let dry. Then pack them with white lithium grease. I am so impressed with how quiet and nice the printer works now.
Posted by Matt, August 14, 2019

Install was easy on my i3 Plus

Old bearins slid out, new bearings slid in
Posted by William Nelson, November 01, 2018