Zyltech MGN12 Linear Rail with Single or Double Carriage Block

$24.95 - $71.95
(5 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 longcarriage 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.

5 Reviews Hide Reviews Show Reviews

  • 5
    Precision rails

    Posted by Brian on Jun 21st 2019

    I've been building with these linear rails for a few months now. I have found the product to be consistent (I can interchange rails and blocks) as well as accurate. The blocks ride smooth as silk with no play. I have 3 printers, each with 2 to 3 of these linear rails, they run 6-10 hours daily flawlessly.

  • 5
    Nice Rails

    Posted by Zach on Mar 10th 2019

    No discernible play, very smooth, great price.

  • 5
    Mgn’s rock!

    Posted by Jared Shirk on Jan 20th 2019

    These are very good rails with zero play in them.

  • 5
    Linear Rail MGN12

    Posted by George on Jul 26th 2018

    Have three of these from ZYLTECH. Two ran very smooth, one ran smooth in one direction and seemed to repeatedly "catch" as it moved along the rail in the other direction. Remove the end cap to see what I if anything behind it (nothing) put back together and now running smooth in both directions.

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