How to Rebuild Linear Rails
Posted: Thu Mar 29, 2018 2:39 pm
So, time to address linear rails.
I recently put some new linear rails on my X axis. I didn't clean them before I did, which was a mistake. I've been getting some print artifacts I just solved by cleaning one of the new rails. Turns out it was filled with sludge.
So, how do you clean a rail? First, before you start, go to amazon or ebay and buy some 3/32 diameter bearings. G25 is fine, or you can go for ceramic if you want to be fancy.
Also buy some pipe cleaners. The real kind, for cleaning pipes. Not the fake plastic ones for making crafts.
Once you have spares, OVER A BUCKET OR BOX
Pull the block off the linear rail.
Take the screws out of the end of the end of the block
Take the red dust caps off.
Carefully pry the green end caps off, pushing in the direction of the springs. You DON'T want to bend the springs.
All of the bearings will fall out.
Dump the entire thing in isopropyl alcohol. I just put it all in a ceramic bowl in 1/4" deep alcohol. Roll the bearings around, and scrub the other bits with your fingers.
Take the green endcaps apart (they're two pieces). Scrub them with a pipe cleaner.
Run a pipe cleaner down through the races.
Scrub it all good.
Once the bearings are clean, take them out and roll them around on paper towel to dry them and get the last of the sludge off. If more comes off, drop em back in the alcohol.
Get it all really clean. Put it back together in the reverse order. Green caps together, green caps on. springs. red caps. screws.
Put a drop of lube (I use superlube PTFE oil) at each end, near the green cap, of one side. Put the bearings back in. Every few bearings add a small drop of oil. When it's "full" there will be a slight gap, not quite enough for one bearing without causing another to pop out.
Carefully do the other side the same way. If you're short any bearings, use your spares. If any bearings won't come clean, aren't smooth, or are rusted, use your spares.
Carefully slide it back on the rail.
[img]https://i.imgur.com/WGbdPW6.jpg[/img]
I recently put some new linear rails on my X axis. I didn't clean them before I did, which was a mistake. I've been getting some print artifacts I just solved by cleaning one of the new rails. Turns out it was filled with sludge.
So, how do you clean a rail? First, before you start, go to amazon or ebay and buy some 3/32 diameter bearings. G25 is fine, or you can go for ceramic if you want to be fancy.
Also buy some pipe cleaners. The real kind, for cleaning pipes. Not the fake plastic ones for making crafts.
Once you have spares, OVER A BUCKET OR BOX
Pull the block off the linear rail.
Take the screws out of the end of the end of the block
Take the red dust caps off.
Carefully pry the green end caps off, pushing in the direction of the springs. You DON'T want to bend the springs.
All of the bearings will fall out.
Dump the entire thing in isopropyl alcohol. I just put it all in a ceramic bowl in 1/4" deep alcohol. Roll the bearings around, and scrub the other bits with your fingers.
Take the green endcaps apart (they're two pieces). Scrub them with a pipe cleaner.
Run a pipe cleaner down through the races.
Scrub it all good.
Once the bearings are clean, take them out and roll them around on paper towel to dry them and get the last of the sludge off. If more comes off, drop em back in the alcohol.
Get it all really clean. Put it back together in the reverse order. Green caps together, green caps on. springs. red caps. screws.
Put a drop of lube (I use superlube PTFE oil) at each end, near the green cap, of one side. Put the bearings back in. Every few bearings add a small drop of oil. When it's "full" there will be a slight gap, not quite enough for one bearing without causing another to pop out.
Carefully do the other side the same way. If you're short any bearings, use your spares. If any bearings won't come clean, aren't smooth, or are rusted, use your spares.
Carefully slide it back on the rail.
[img]https://i.imgur.com/WGbdPW6.jpg[/img]