Zyltech MGN12 Linear Rail with Single or Double Carriage Block

$24.95 - $73.95
(2 reviews) Write a Review

Beware of purchasing inexpensive ballscrews as many sellers falsely claim to be offering precision-grade C linear rails. 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.

2 Reviews Hide Reviews Show Reviews

  • 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.

  • 5
    MGN12 Linear Rail

    Posted by George on Jul 23rd 2018

    Nice rail, carriage rides smooth with little to no preload required.

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