Zyltech MGN12 Linear Rail with Single or Double Carriage Block

$24.95 - $71.95
(6 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.

6 Reviews Hide Reviews Show Reviews

  • 5

    Posted by David Fleming on Aug 13th 2019

    No need to disassemble and clean like the cheap chinese blocks. I just added a little lube and installed. Works perfectly!

  • 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.

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