Zyltech MGN12 H-TYPE - Linear Rail with Single or Double Carriage Block

$24.95 - $52.95
(10 reviews) Write a Review

 Genuine ZYLtech MGN12 linear and MGN12H long carriage block are both real grade C with the following details:


  • Precision grade C grounded and polished
  • Interchangeable bearing blocks/slider carriage for versatile configuration
  • Dimensional tolerance of height H and width N: +/- 40microns
  • Maximum travel distance error: +/- 17 microns per 300mm and +/- 23 per 1000mm


MGN12 rail ⌀3.5mm mounting hole spacing is 25mm

MGN12H long carriage block size 27x45mm, M3 mounting hole spacing 20x20mm


The listing is for one rail plus one or two carriage blocks . For light duty applications(such as laser engraver or 3D printer) , it's acceptable to use one rail per one axis. It's most common to use two rail and two carriage blocks per rail for one axis.

10 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Keith Davis on Apr 22nd 2020

    I ordered these rails in the midst of the COVID-19 pandemic and I still received them in less than a week. Everybody scream Hiwin rails. These rails were incredible quality right out of the package. Very smooth and could easily travel the rail under slight gravity. I though I was going to have to rebuild them all to achieve this. Out of the four I ordered, two of them I rebuilt likely from dust or packing grease which is recommended for any rail you buy. Great product and I will definitely buy them again for future 3D printer projects.

  • 5
    rail and block

    Posted by sam allen on Apr 22nd 2020

    works great thanks

  • 5
    Just what I needed

    Posted by brian anderson on Apr 3rd 2020

    I'm building a custom printer and needed some nice long rails. These came in fast even with a global pandemic, and worked perfectly. I've ordered this sort of thing from other sources before and it was awesome getting ones that slid smoothly right out of the box!

  • 5

    Posted by Joseph Casalino on Mar 18th 2020

    I had purchased the same size carriage and rail from an E-bay distributor and was having problems with the smoothness of the carriage. I was immediately able to feel the difference with the ones from Zyltech. Glad I bought them and have switched my distributor to Zyltec from now on.

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