You can replace the first one with real 3/32 ball bearings from a hardware store. Clean and grease and it will take care of a lot of wobble or play. Brake clean is my go to for cleaning. 3 in one makes a great grease to use. Phyfe is ok but grease works better and more quiet. Great information to share buddy. Thanks for helping
@dherrendoerfer5 жыл бұрын
Yes, this works quite well, if the carriage is loose.
@Somun-a4 жыл бұрын
@@dherrendoerfer I think it would be nice to suggest replacing the ball bearings for a loose fit. They are easy to obtain in different sizes. An annotation in the video would possibly help some folks.
@theMedicatedCitizen10 ай бұрын
I recently got a set of linear rails for my Neptune 3 Pro, they were pretty rough. Polished them with red scotch-brite on a dremel to get most scratches out, hit them with some lapping compound, cleaned the bearings out, but still had binding, had to removed 2 bearings from each side, and now its smooth as silk on silk, but zero play. Keep a magnetic tray handy, and don't take them out over a carpet... ask me how I know 😂
@Side85Winder3 жыл бұрын
I have seen a few of these videos now and a few different ways of fixing them to be better. You have a very good insite to some of the issues thats good to know about. Other ways i have seen with the lose ones some times the balls are slightly out of spec you can order higher precision balls. The extra tight ones i wouldn't discard you could try polishing the contact surfaces as this would remove a very very small amount of material. I would say a tight one i would be more hopeful than a lose one to fix.
@dherrendoerfer3 жыл бұрын
Yeah, there's no fixing a loose one, except by re-balling them, but I've never had success with that.
@andrearetel45573 жыл бұрын
I bought a set of rails and while they slide great when I opened them, after replacing the bearings, they no longer slide well at all. When I looked at the retainer clip, I can see that it's bowed in at the center. That's what's preventing the bearings from running smoothly through the track. So if I do your little trick to slightly bend the retainer clip, that should help? Thanks. :)
@dherrendoerfer3 жыл бұрын
yes it might help, the clips steel should not make hard contact with the balls, it will just grind them down. The blocks are usually paired to the rails, if you switch them they might not work well. That only works for the quality machined ones.
@liquidrockaquatics390028 күн бұрын
I know it’s been three years, but the clips that hold the balls are just retainer clips. They should not have any tension against the balls. Nobody likes tension against their balls. The balls should be held loosely.
@TorteTSАй бұрын
In my opinion the sealing on both ends prevent the grease to come in. Is there a reason why you don’t lubricate when it’s open?
@dherrendoerferАй бұрын
I've never thought of it that way - but the rails always greased up fine with proper bearing grease, and that only needs to wet the surfaces.
@ulariv17015 жыл бұрын
I have an idea that could save me about 1000 euros, and they can be as bad as they are. Only thing I need to know, do they work when its a pulling load? Basically rails are bolted down, and load is pulling up and do bearings work then?
@dherrendoerfer5 жыл бұрын
Under load they work, they just don't last long.
@MF175mp4 жыл бұрын
The HG series rail is meant for heavy load in any direction
@jmtx.5 жыл бұрын
Great comparison and fix. Thanks.
@jujucattys1568 ай бұрын
Can you mount 2 sections of rail end-to-end to get a longer run or does that result in an bumps/innacuracies as the carriage crosses the joint between two rails?
@dherrendoerfer7 ай бұрын
Yes you can. You need to be very exact, but it's been done before.
@linandy15 жыл бұрын
Thanks ! I will fix mine
@linandy15 жыл бұрын
So, it turns out that one of my rails inner grooves was not cut enough and the little metal ball retainer wires are rubbing into that.
@looselycollected750511 ай бұрын
I have a few questions, 1) how many of the balls should be in each of these slides? 2 ) will white lithium or PTFE lube work on these for lubing them?
@dherrendoerfer11 ай бұрын
I don't know the number of balls, but there is a free space of about three to four balls in total going round.
@looselycollected750511 ай бұрын
@dherrendoerfer so basically enough to leave a gap of 3-4 balls each side and not full. Gotcha.
@angelmendoza68334 жыл бұрын
you should've put an affiliant link to some on amazon i wouldve purchased.
@julianhcuestas Жыл бұрын
Hi. How much play must have linear bearing with rail? Should it have some play, or should it be completely rigid?
@dherrendoerfer11 ай бұрын
It should be rigid to the point where it has no free play in the rail. Yet, it should move without binding up.
@psychrave2 жыл бұрын
Does anybody know what these blocks are rated at for load (weight)? I'm looking at them on Amazon to use on a flattening router jig that I want to make. Thanks for any help!
@dherrendoerfer2 жыл бұрын
Hiwin has a number of charts on their website regarding the static and dynamic loads that the blocks will take - the numbers are surprisingly high ...
@lukecunningham87935 жыл бұрын
where exactly are you buying these? great video
@dherrendoerfer5 жыл бұрын
I've ordered from banggood and aliexpress , but mostly from banggood
@lukecunningham87935 жыл бұрын
@@dherrendoerfer nice do you have any specific stores or links you buy from.
@recurveninja5 жыл бұрын
@@lukecunningham8793 If you're still looking, try BST Automation on Aliexpress.
@lukecunningham87935 жыл бұрын
@@recurveninja thank you!
@mayank18493 жыл бұрын
Buy from us we are authorised dealer of THK, contact me on chennai@seimitsu.co.in
@maxkool0072 жыл бұрын
chek the bearings. most of the time they are undersized and this is where the slop comes from.
@megadeth3692 жыл бұрын
Thanks!
@saschathiede4 жыл бұрын
What do you think of PTFE spray to lubricate them?
@dherrendoerfer4 жыл бұрын
PTFE spray creates a glide film, it may work well, but the linear bearings are bearings after all and usually require grease.
@grindel805 жыл бұрын
Please tell us what is the use of This Things?
@dherrendoerfer5 жыл бұрын
I'm using them for this: github.com/dherrendoerfer/The-Robin-3D-Printer-Project/blob/master/STL-Files/Bad-Robin/README.md Many of them ...
@GoranMilici3 жыл бұрын
I don't know where you got yours but mine look the same but none of the problems and they say made in Romania. Which is actually good quality. It just happeneds i was born in Romania but moved to the states 32 years ago but a lot of high end companies make their stuff in Romania because the labor is sti dirt cheap but the workmanship is good. From my 2020 mercedes sprinter head light and tail lights say made in Romania to some kenneth kole leather shoes. So u must have gotten the bargain basement that you find on shady sites. I paid 100 bucks for 600 mm and 4 green carriages with a ball screw.
@MaintDocs10 ай бұрын
Also worth mentioning that Taiwan is the high quality China. If you are looking for bargain machinery, it's definitely worth look that stuff from there. (from machine shop experience)
@ricardomolina87735 жыл бұрын
You're not telling the sizes of the Rail
@christophergrove48765 жыл бұрын
I THINK "MGN12h"?
@ghulamhaider95483 жыл бұрын
I need this
@michaelschuler73974 жыл бұрын
Are those Hiwin ?
@dherrendoerfer4 жыл бұрын
No, I believe these were Machifit.
@sfrskz4 жыл бұрын
they make them better now i guess, because mines werent wobbling or shutters while moving
@dherrendoerfer4 жыл бұрын
@@sfrskz Yeah, I've made that observation as well, the last that I ordered were very good, if they arrived undamaged - that's my main worry right now, because it seems that many sellers now consider a plastic bag adequate packaging.
@sfrskz4 жыл бұрын
Dirk Herrendoerfer other than lost time if you got warped rail they refund or send new one. i love banggood in this way. you dont wait like in aliexpress disputes.
@boharihamen5 жыл бұрын
Any links to these linear rails?
@dherrendoerfer5 жыл бұрын
These for example, although not super-cheap right now: www.banggood.com/MGN12H-250300500550mm-Linear-Rail-Guide-Linear-Sliding-Guide-Block-CNC-Tool-p-1156260.html?rmmds=search&ID=515968&cur_warehouse=CN
@aarondcmedia95855 жыл бұрын
Would way oil be ok to use for the grease?
@dherrendoerfer5 жыл бұрын
If it is free of acids, yes.
@michaelschuler73974 жыл бұрын
And not silicon based
@MaintDocs10 ай бұрын
Yes. All the haas machines use way oil with auto oilers (then they tried grease systems that clogged badly. The new ones claim to use grease but actually use way oil again).
@98f52 жыл бұрын
lmao 1/10th of a mil with a fuckin screwdriver? okay maybe...
@dogodogo5891 Жыл бұрын
hi i need some advices i planned to make some engraver which is better between linear bearing-stainless steel rod n linear guide?
@dherrendoerfer Жыл бұрын
Well, there is no one-size-fits-all, but in my experience threaded rods are not as good, as they tend to go bad and bend at some time - linear rails and blocks in combination with aluminium profile are a much better combination. Sometimes the shape of the block and the 20x20mm mounting holes make the construction of the tool-holder much easier.
@colinz.54415 жыл бұрын
we have this product made in Japan quality but price is made in China
@MF175mp4 жыл бұрын
Sure you do
@youtubehandlesux5 ай бұрын
If it's made in the real China instead of the fake big one then it sounds reasonable
@michaelschuler73973 жыл бұрын
I just buy THK or NSK . Problem solved
@MaintDocs10 ай бұрын
Just be rich and don't be concerned with purchase price. Problem solved. Amazing advice there.
@michaelschuler73979 ай бұрын
@@MaintDocs no I buy them new old stock be smart not stupid