{"product_id":"airtac-mgn12h-linear-rail-with-carriage-z2-preload-300-or-350-mm","title":"Airtac MGN12H Linear Rail with Carriage, Z2 Preload, 300 or 350 mm","description":"\u003cp\u003eAirtac MGN12H linear rail with one H-type (long) carriage, Z2 preload, in 300 or 350 mm. Z2 is the medium preload: no play in the carriage, but it still rolls freely by hand. That's the grade I'd put on an X axis, where a loose carriage shows up as ringing in your prints and a stiff one costs you acceleration.\u003c\/p\u003e\n\u003cp\u003eOn a Voron 2.4 or Trident, 300 mm is the X rail for a 250 build and 350 mm for a 300 build. It is also the carriage size the Monolith X axis uses. Check your BOM for other frames.\u003c\/p\u003e\n\u003cp\u003eAirtac is a proper Taiwanese rail brand rather than a relabelled AliExpress rail: the carriages are matched to the rail and don't need sorting through. I stock them because that's what I'd put in my own printer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: MGN12H, 12 mm rail, long carriage\u003c\/li\u003e\n\u003cli\u003eLength: 300 mm or 350 mm\u003c\/li\u003e\n\u003cli\u003ePreload: Z2 (medium)\u003c\/li\u003e\n\u003cli\u003eAccuracy grade: C (standard)\u003c\/li\u003e\n\u003cli\u003eSupplied with rail, one carriage and the carriage retainer\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Airtac","offers":[{"title":"300 mm","offer_id":55537637327175,"sku":"AIRTAC-MGN12H-Z2-300","price":59.95,"currency_code":"EUR","in_stock":true},{"title":"350 mm","offer_id":55537637359943,"sku":"AIRTAC-MGN12H-Z2-350","price":64.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/0575\/5719\/files\/DSC04911.jpg?v=1792762120","url":"https:\/\/pjotr3dshop.com\/nl\/products\/airtac-mgn12h-linear-rail-with-carriage-z2-preload-300-or-350-mm","provider":"Pjotr3DShop","version":"1.0","type":"link"}