8 Pieces Igus Drylin RJ4JP-01-08 Anet A8 Prusa i3 3D Printer RepRap LM8UU Bearing

These bushings are awesome quality for the price and are a fantastic alternative to bearings for my 3D printers, but they do come with limitations and are trickier than standard bearings to install, but they are wonderful and quiet if done right. I messed up when I first installed these on one of my Prusa Minis and learned from my mistakes. So please bear the following in mind:1. Clean your rods and keep them clean. Use alcohol to clean them, especially if you had bearings on there before because these bushings and grease don’t mix well. Clean your rods off from time to time so dirt doesn’t build up.2. Don’t over tighten. If at all possible, install these with the rods in place if they are secured by a clamp. You want just enough pressure to keep them from moving but if you channel your inner Duwayne Johnson, you will deform the bushings.3. Keep some perspective. These are under $10 for 8, they are not Missumi bearings.

I replaced steel bearings in my old ANET A8 and these are silky smooth and very quiet.

Worked for what I needed them for

Best upgrade I've made for this printer. They will theoretically last a lifetime when used in a 3d printer.

They should have a 10 piece to get all of the spots that the Prussa has

After great success with my print head on X-Axis. I purchased more bearings to rebuild Y Axis. I am very impressed with the results. Google "Magnetic IDEX" to see how well these bearings work :)

Planned to use them for for a 3D printer but ended up using a good quality (misumi) ball bearing to the reduced friction. These ones are quiet (good) but seems to have gripping friction when you start to move them.

It appears for some folks these don't fit right (too loose, needs a sleeve to press fit?) But i found then were a perfect fit in the MPMD. I have an original model and have had issues with the stock bearings causing the print head to dig into the model. Lubrication helped for a bit, but the issue always came back. I am not sure if my early model just had different tolerances or what, but the stock bearings I think were too tight. With these installed, the print head moves smoother and doesn't dig into the model on higher layers.