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

$24.95 - $71.95
(20 reviews) Write a Review
List Price:
$24.95 - $71.95
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 If you order a 250mm custom length rail then you will receive one 250mm rail with smooth ends.

If you need multiple rails in a custom length then you must order two custom lengths. For example if you need two 250mm rails then each of them will require a custom length purchase.

1.Select the custom length of your choice

 (<500mm or <1000mm). 

2.Then select the number of carriages. 

3.Specify your custom length in the Customer Note section.

4.Select the quantity needed using the up or down arrows. 

Due to saw limitations and the hole spacing on a MGN rail, ZYLtech will determine which length rail to use for the custom length specified. There will be no “cut off” pieces from custom lengths. 


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.

20 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Lynn C. on Apr 26th 2024

    Excellent seller, excellent customer service. Fast shipping, item exactly as described.

  • 5
    MGN12 Linear rails

    Posted by Anthony Williams on Sep 26th 2023

    These are awesome.

  • 5
    MGN 12 H-Type 400mm Rail and Carriage

    Posted by Ken O on Sep 6th 2021

    Passed every inspection I made. Expected I would need to replace the bearings as is the case with most, boy was I surprised and impressed. Bearings measured 2.37mm with my calipers (for those that don&#039;t know 3/32 = 2.38125mm) the precision 3/32 bearings I have in stock measure the same. The bearing race using a strong light and magnification could have been ground and looked very good. No debris found during inspection and only light oil cleaned up very easily. Rail was true and dimensionally accurate. Packaging was good enough to account for handling neglect during transit, bubble wrap, in a tube in a box. I have a Voron printer build in my future and I&#039;m happy to have found my linear motion supplier. Highly recommend.

  • 5
    high quality linear rails

    Posted by Shane Hooper on Jun 10th 2021

    great quality!

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