{"product_id":"vcore-3-4-z0-preloaded-rails-kit","title":"Vcore 3\/4 Z0 preloaded rails kit","description":"\u003cp\u003e\u003cspan style=\"text-decoration: underline; color: #80ff00;\"\u003e\u003cem\u003e\u003cstrong\u003eAll orders of that kit in destination to the USA are DDP, meaning no custom fee at arrival!!\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline; color: #80ff00;\"\u003e\u003cem\u003e\u003cstrong\u003eFor other country depending local rules, some custom fees can apply\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis kit allows you to swap the stock Ratrig chinese XY rails with quality Black Z0 preloaded rail\u003c\/p\u003e\n\u003cp\u003eThis kit mirror the HIWIN version of this kit on the store, with a more attractive price compared to Hiwin. Quality is top, tested at BRS since years, and offer a better price\/value for smaller budget.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eContext:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eLinear guide preload eliminates the clearance between the\u003cspan style=\"color: #060606;\"\u003e\u003cspan style=\"color: #060606;\"\u003ecarriage and the rail.\u003c\/span\u003e\u003c\/span\u003e Manufacturers achieve this by using specific sized ball bearings.\u003c\/p\u003e\n\u003cp\u003eBy eliminating the clearance, it increases rigidity and reduces deflection when external loads are applied. In a 3D printer, rails preload is a key factor to increase precision and improve the input shaper specs since no preload are cheaper, but get some play, more sensible to vibration across our high accelearions values..\u003c\/p\u003e\n\u003cp\u003eThe ball bearings used to achieve preload are slightly larger than the distance between the raceways of the linear guide and the rail. Common preload amounts are between 2 and 8 percent.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach kit suits only the 2x Y rails and the X rail, Z rails are mandatory to be use with a preload since they don't benefits from it relatively to their orientation and usage.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eChoosing the right pack:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e1- Choose the machine\u003c\/p\u003e\n\u003cp\u003e2- Choose the machine size\u003c\/p\u003e\n\u003cp\u003e3- Choose the set: If you just want a quality rail swap without having to changes anything, pick the 2x MGN12C (Y) + 1x MGN12C (X) option. If you prefer a ligher X set pick the MGN9H set: \u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003eSome modification on few parts may be necessary\u003c\/strong\u003e\u003c\/span\u003e, essentially on the toolhead section or the gantry crosstube.\u003c\/p\u003e\n\u003cp\u003eFor more informations on this topic, don't hesitate to ask me for those modifications\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eWhat to do before installation: \u003cem\u003e\u003ca href=\"https:\/\/docs.ldomotors.com\/en\/guides\/rail_grease_guide\" rel=\"noopener noreferrer\" target=\"_blank\"\u003ecleaning and lubrification comprehensive guide\u003c\/a\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"color: #ff2a00; text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cem\u003eThis product is shipped from the supplier directly, within 10-15 days because the cuts are needed to be made at the correct lenght\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline; color: #30da0f;\"\u003e\u003cem\u003eCustom size kits can be asked at contact@brs-engineering.com\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"BRS-ENGINEERING","offers":[{"title":"Vcore 3.0\/3.1 \/ 200 \/ 2x MGN12C (Y) + 1x MGN12C (X)","offer_id":52074943381851,"sku":null,"price":145.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 3.0\/3.1 \/ 200 \/ 2x MGN12C (Y) + 1x MGN9H (X) (Custom toolhead plate required)","offer_id":52074943414619,"sku":null,"price":145.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 3.0\/3.1 \/ 300 \/ 2x MGN12C (Y) + 1x MGN12C (X)","offer_id":52074943447387,"sku":null,"price":168.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 3.0\/3.1 \/ 300 \/ 2x MGN12C (Y) + 1x MGN9H (X) (Custom toolhead plate required)","offer_id":52074943480155,"sku":null,"price":168.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 3.0\/3.1 \/ 400 \/ 2x MGN12C (Y) + 1x MGN12C (X)","offer_id":52074943512923,"sku":null,"price":203.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 3.0\/3.1 \/ 400 \/ 2x MGN12C (Y) + 1x MGN9H (X) (Custom toolhead plate required)","offer_id":52074943545691,"sku":null,"price":203.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 3.0\/3.1 \/ 500 \/ 2x MGN12C (Y) + 1x MGN12C (X)","offer_id":52074943578459,"sku":null,"price":223.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 3.0\/3.1 \/ 500 \/ 2x MGN12C (Y) + 1x MGN9H (X) (Custom toolhead plate required)","offer_id":52074943611227,"sku":null,"price":223.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 4.0\/4.1 \/ 300 \/ 2x MGN12C (Y) + 1x MGN12C (X)","offer_id":52074943643995,"sku":null,"price":178.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 4.0 \/ 300 \/ 2x MGN12C (Y) + 1x MGN9H (X) (Custom toolhead plate required)","offer_id":52074943676763,"sku":null,"price":178.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 4.0\/4.1 \/ 400 \/ 2x MGN12C (Y) + 1x MGN12C (X)","offer_id":52074943709531,"sku":null,"price":202.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 4.0 \/ 400 \/ 2x MGN12C (Y) + 1x MGN9H (X) (Custom toolhead plate required)","offer_id":52074943742299,"sku":null,"price":202.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 4.0\/4.1 \/ 500 \/ 2x MGN12C (Y) + 1x MGN12C (X)","offer_id":52074943775067,"sku":null,"price":224.0,"currency_code":"USD","in_stock":true},{"title":"Vcore 4.0 \/ 500 \/ 2x MGN12C (Y) + 1x MGN9H (X) (Custom toolhead plate required)","offer_id":52074943807835,"sku":null,"price":224.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/5991\/3977\/files\/ratrig_vc40_500_1000mm_sfu1204_corexy_2025-Jul-29_11-48-25PM-000_CustomizedView13624340909_6668adf9-ed8f-4bfa-8fb4-e72d42f1c207.png?v=1758289257","url":"https:\/\/florent-broise.myshopify.com\/en\/products\/vcore-3-4-z0-preloaded-rails-kit","provider":"BRS-ENGINEERING","version":"1.0","type":"link"}