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TM
Reviewed in Canada on January 18, 2025
After reading some reviews I was a little skeptical but I ordered anyway because I needed rails for my ender 3 y axis. I can say these have no play in them and they are nice and smooth. They came with anti-corrosion grease. Packaging wasn't great. They came wrapped in their own plastic sleeve individually but one of them had a hole in one side so when I picked it up it was enough for the rail to fall out, but not the carriage. When I tried to put it back together the bearings went EVERYWHERE so I was looking for approximately 15-20 tiny bearings that were hard to see on the carpet. Luckily it's really short, flat carpet and not shag. Also lucky I got some magnets from amazon that came in a couple days before these that made it a lot easier to find and grab them with. After I found them all again I was a little more careful putting it back together. They are a little rough at first but some good lube and you're good to go. 5 stars for the rails, 3 stars for the packaging
Sebastian D.
Reviewed in Germany on August 25, 2024
Ich habe die IMETRX Linearführung MGN12H 400mm für mein Voron 350 erworben, um ein Upgrade von MGN 9 auf MGN 12 durchzuführen, und ich könnte nicht zufriedener sein! Die Installation war unkompliziert, und die Verbesserung in der Stabilität und Lage meiner Achse ist sofort spürbar.Die MGN12H Schiene bietet eine deutlich höhere Steifigkeit und Präzision, was sich positiv auf die Druckqualität auswirkt. Ich habe seit dem Upgrade eine merkliche Reduzierung von Vibrationen und ein insgesamt ruhigeres Druckverhalten festgestellt.Die Verarbeitung der Linearführung ist erstklassig, und ich schätze die robuste Bauweise, die für eine lange Lebensdauer sorgt. Wenn Sie auf der Suche nach einer Möglichkeit sind, die Leistung Ihres 3D-Druckers zu verbessern, kann ich die IMETRX MGN12H Linearführung nur wärmstens empfehlen.
MCubeLab
Reviewed in the United States on July 26, 2024
Make sure to measure your part carefully! The spacing between the main mounting holes is 25mm but the spacing from the end of the rail to the first mounting hole is 12mm, NOT 10mm (DIMENSION E). For the 200mm rail, there are 8 mounting holes total. I modeled this in my design with just the drawing dimensions and had to remake my part due to the bad dimensions. Measure twice, cut once!
Fritz
Reviewed in Germany on July 22, 2024
Wenn man Bastkler ist und sich mit CNC und 3D-Druckern auseinandersetzt, kommt man um Linearschienen nicht herum. Komisch ist aber, daß jeder Lieferant ein anderes Maß versendet, obwohl bei allen die gleichen Maße angegeben sind. Man kann nicht Schlitten oder Schine tauschen, dann ist es entweder zu locker oder zu fest, daß man die Kugeln einzeln spürt. Hier aber schön gleichmäßig hergestellt und geschliffen, nichts wackelt, komplett spielfrei und sauber. Kommt an meinen 3D-Drucker, den ich statt der sich schnell abreibenden Rollen dann mit Linearführungen fahre in allen Axen. Kein Verschleiß, kein Räderstaub, kein ewiges wieder-einstellen-müssen von Riemenspannung und Andruckkraft der Rollen am Profil.
John P.
Reviewed in the United States on May 25, 2024
These do not operate smoothly. They stick at various places, some of the balls look black and dirty as it moves.. It is supposed to be very smooth and clean in motion. Very disappointed. There are other options (a little more expensive) that are better. Look for the ones that are black and not red and green.
Shaq
Reviewed in the United Kingdom on October 26, 2024
I didn't like the fact I had to buy replacement bearings as they didn't come all perfectly i had some balls smaller than others so I brought a pack of g25 steel ball bearings and now the blocks run smooth like butter.I like they come with that black finish so they don't corrode or rust over time and I feel like the black finish dampens the noise of the bearings rolling compared to my steel linear rail i got of AliExpress they are pretty good rails these black ones are I'd buy them again.
Alexandrrev
Reviewed in Germany on June 6, 2023
👍
Jarrett
Reviewed in the United States on June 16, 2023
Buying inexpensive linear rails is a total hit or miss. Hiwin is the way to go, but man they're pricy. I really wanted black rails as well, so I figured I'd give these a shot.Ordered two - packaging was meh, they were of course covered in oil to prevent corrosion, but overall the rails moved pretty well. Both rails arrived straight and true, and there's no play in the carriage which is nice too. Properly cleaning and lubricating these made a world of difference, as expected, and so far they've been on my Ender 3 v2 with great success. One had some very minor rough spots that have seem to smooth out without introducing any play, which is always worrying but nonetheless.These aren't the Hiwin rails by any means, but I'm quite delighted with the quality for the price point and plan to buy more in the future. Will definitely update this after I've had some more time with them, but I've had them in use for about 3 weeks now and they've been treating me well.
Sete Henrie
Reviewed in the United States on June 12, 2023
Bought this set and a single rail from another company, this set was perfectly flat and straight, the single rail from another place for the same price as one of these rails, and it was bent like a rainbow! with +1mm bend from one side to the other. These rails are definitely the best bang for your buck!
Jake Rota
Reviewed in the United States on December 23, 2023
Purchased for a z conversion on a ender 3. Out of the box the carriage slides great, just cleaned up the rails a little and good to go.
Austin Dutenhoeffer
Reviewed in the United States on October 27, 2023
I ordered this item and received one rail and one carriage. The title and image indicate it should have one rail and 2 carriages which is what I needed for my project. Assuming their was some sort of packaging mistake I returned it for another of the same item describing my issue at the time of requesting a return. The replacement I received was exactly the same. One rail and one carriage. I give three stars only because the rail and carriage are great. I have no qualms with the product itself. However, either the product page needs to be updated or whatever logistical error that is resulting in a different quantity needs to be corrected.
Jon
Reviewed in the United States on April 15, 2023
this thing rocks, anytime i need SOLID, i mean SOLIDDDDDD linear movement im buying this stuff.literally no play whatsoever even with a couple pounds mounted on it while the track is on its side.
Matthew R
Reviewed in the United States on June 23, 2022
I have bought several brands of inexpensive linear rails. They were all usable but I replaced the bearings in some to get better results. (which may not have been necessary)When I get a new rail, they come with a sticky grease on them. They block moves but I can't lift one end up and have gravity pull the block to the other end. I work on them until I get the block to move from end to end with nothing but gravity from holding one end higher than the other.Instead of taking this one apart, I wiped off as much grease as I could and then poured isopropyl alcohol over the rail and into the bearing area. I then work it and wipe it until I get as much grease off as possible. Then I use PB Blaster white lithium grease from a spray can to lubricate it. I put it on a rag and then wipe it into the bearing block. I was able to get this rail smooth as butter after doing that a few time and working the rail for several times.Another but possibly unnecessary step is to use 2000 or 3000 grit sandpaper to polish the actual rail. The four sides are easy to polish but the little channel is a bit of a challenge. I do that and on some rails that makes a bit difference. This rail didn't have any noticeable burrs but I did it anyway.I was thrilled that it is just long enough for the Z axis of my Biqu B1 SE Plus. I need one more and a conversion kit to install it. I have printers with no v slot rollers (all linear rails) They are nice because there is no adjustment, cleaning or roller replacement needed. They are also very accurate and it seems like I can get a little more speed out of the printer when it is all linear rails.The weight of the Y axis seems to be a little less important and causes a little less ringing with linear rails. (linear advance is the most impactful thing you can do to reduce ringing)Now to find a conversion kit for the Biqu. It isn't like Ender 3 where kits are everywhere. There are a bunch of printable kits though so I may start with one of those.
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