{"product_id":"dfh-440c-linear-rails","title":"DFH 440c Linear Rails","description":"\u003cp\u003e\u003cstrong\u003e440C stainless MGN rails for printer and small-CNC motion.\u003c\/strong\u003e DFH 440C Linear Rails are miniature linear guide rails with matching carriages, stocked across MGN7H, MGN9C, MGN9H, MGN12H, MGN15H, and selected MGN15C dual-carriage formats with Z0, Z1, or selected Z2 preload options.\u003c\/p\u003e\n\u003ch3\u003eWhy pick 440C rails?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-resistant 440C stainless steel\u003c\/strong\u003e is a better fit for humid shops, enclosed printers, and machines that may sit between jobs than plain carbon-steel rails.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMGN-format rolling guideways\u003c\/strong\u003e give compact, low-friction linear motion for 3D printers, CoreXY gantries, beds, probes, fixtures, and small CNC or mill projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreload options let you tune the axis\u003c\/strong\u003e: choose easy motion for lightly loaded axes or more constraint where stiffness matters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoose the right preload\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZ0\u003c\/strong\u003e: light preload and the easiest hand feel. Use for Z axes, bed motion, Ender-style conversions, and low-load axes unless your BOM specifies otherwise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZ1\u003c\/strong\u003e: more constraint than Z0. Good for X\/Y gantries, CoreXY motion, toolheads, and general printer motion where stiffness matters more than free-fall feel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZ2\u003c\/strong\u003e: higher preload on selected variants only. Use when the build needs extra stiffness or support; expect a noticeably tighter feel before grease and break-in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries stocked:\u003c\/strong\u003e MGN7H, MGN9C, MGN9H, MGN12H, MGN15H, and selected MGN15C dual-carriage rails.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLengths stocked:\u003c\/strong\u003e 50mm through 500mm depending on selected rail type.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 440C stainless steel linear rail assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreload:\u003c\/strong\u003e Z0, Z1, and selected Z2 options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold by selected variant:\u003c\/strong\u003e standard MGN variants are rail + carriage; MGN15C Dual Carriage variants include the second carriage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e rails may arrive with light storage oil or EP2 grease depending on batch. Wipe, inspect, and grease before final service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment notes\u003c\/h3\u003e\n\u003cp\u003eUse the exact rail type, length, preload, and carriage count from your project BOM. These rails are commonly used in Voron, CoreXY, Ender-conversion, fixture, and compact CNC builds, but a rail that is close is not always interchangeable.\u003c\/p\u003e\n\u003cp\u003eIf you want a project-specific rail bundle instead of loose rails, see the live \u003ca href=\"https:\/\/dfh.fm\/products\/dfh-440c-salad-fork-160mm-linear-rails-kit\"\u003eDFH 440C Salad Fork 160mm Linear Rails Kit\u003c\/a\u003e, \u003ca href=\"https:\/\/dfh.fm\/products\/beltdrivenender3-linear-rails-kit-by-kevinakasam\"\u003eBeltDrivenEnder3 440C Stainless Steel Linear Rails Kit\u003c\/a\u003e, or \u003ca href=\"https:\/\/dfh.fm\/products\/zero-g-mercury-one-1-linear-rails-kit\"\u003eZero G Mercury One.1 Linear Rails Kit\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eGotchas before you install\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher preload will not free-fall.\u003c\/strong\u003e Z1 and Z2 rails often feel tight by hand, especially before grease and real machine load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not cut unless you know the process.\u003c\/strong\u003e If you must shorten a rail, use an abrasive method with shallow passes and control heat to avoid warping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is not a full motion kit.\u003c\/strong\u003e Order belts, pulleys, idlers, fasteners, and project plates separately unless your BOM only calls for the rail itself.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e“Super smooth” — verified buyer\u003c\/blockquote\u003e","brand":"dfh.fm","offers":[{"title":"MGN7H \/ 150mm \/ Z0","offer_id":43558913081566,"sku":"3092184761","price":13.99,"currency_code":"USD","in_stock":true},{"title":"MGN7H \/ 150mm \/ Z1","offer_id":43558913114334,"sku":"7643196139","price":13.99,"currency_code":"USD","in_stock":true},{"title":"MGN7H \/ 200mm \/ Z0","offer_id":43558913147102,"sku":"4871618840","price":15.99,"currency_code":"USD","in_stock":false},{"title":"MGN7H \/ 200mm \/ Z1","offer_id":43558913179870,"sku":"1659529279","price":15.99,"currency_code":"USD","in_stock":true},{"title":"MGN7H \/ 210mm \/ Z0","offer_id":43558913278174,"sku":"9737446680","price":16.99,"currency_code":"USD","in_stock":false},{"title":"MGN7H \/ 210mm \/ Z1","offer_id":43558913310942,"sku":"2931417364","price":16.99,"currency_code":"USD","in_stock":false},{"title":"MGN7H \/ 220mm \/ Z0","offer_id":43558913212638,"sku":"7007004803","price":17.99,"currency_code":"USD","in_stock":true},{"title":"MGN7H \/ 220mm \/ Z1","offer_id":43558913245406,"sku":"2354636985","price":17.99,"currency_code":"USD","in_stock":false},{"title":"MGN7H \/ 230mm \/ Z0","offer_id":43558913343710,"sku":"3948266789","price":18.99,"currency_code":"USD","in_stock":false},{"title":"MGN7H \/ 230mm \/ Z1","offer_id":43558913376478,"sku":"5242433475","price":18.99,"currency_code":"USD","in_stock":true},{"title":"MGN9C \/ 150mm \/ Z0","offer_id":43558914457822,"sku":"6326522770","price":14.99,"currency_code":"USD","in_stock":false},{"title":"MGN9C \/ 150mm \/ Z1","offer_id":43558914490590,"sku":"5376398958","price":14.99,"currency_code":"USD","in_stock":true},{"title":"MGN9C \/ 210mm \/ Z0","offer_id":43558914654430,"sku":"5791736347","price":16.99,"currency_code":"USD","in_stock":false},{"title":"MGN9C \/ 210mm \/ Z1","offer_id":43558914687198,"sku":"8276354487","price":16.99,"currency_code":"USD","in_stock":false},{"title":"MGN9C \/ 220mm \/ Z1","offer_id":43558914621662,"sku":"5607421846","price":19.99,"currency_code":"USD","in_stock":true},{"title":"MGN9C \/ 220mm \/ Z2","offer_id":43662694678750,"sku":"8859478426","price":19.99,"currency_code":"USD","in_stock":false},{"title":"MGN9C \/ 230mm \/ Z0","offer_id":43558914719966,"sku":"8873671195","price":23.99,"currency_code":"USD","in_stock":false},{"title":"MGN9C \/ 230mm \/ Z1","offer_id":43558914752734,"sku":"1929684212","price":23.99,"currency_code":"USD","in_stock":false},{"title":"MGN9H \/ 50mm \/ Z1","offer_id":43771262271710,"sku":"5112241704","price":11.99,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 150mm \/ Z0","offer_id":43558913409246,"sku":"3507681820","price":15.99,"currency_code":"USD","in_stock":false},{"title":"MGN9H \/ 150mm \/ Z1","offer_id":43558913442014,"sku":"3555608067","price":15.99,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 180mm \/ Z1","offer_id":43839513985246,"sku":"7117130335","price":15.99,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 200mm \/ Z0","offer_id":43558913474782,"sku":"5996741555","price":16.99,"currency_code":"USD","in_stock":false},{"title":"MGN9H \/ 200mm \/ Z1","offer_id":43558913507550,"sku":"6183732184","price":17.99,"currency_code":"USD","in_stock":false},{"title":"MGN9H \/ 210mm \/ Z0","offer_id":43558913605854,"sku":"5703567879","price":19.99,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 210mm \/ Z1","offer_id":43558913638622,"sku":"9680592357","price":19.99,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 220mm \/ Z1","offer_id":44628637581534,"sku":null,"price":19.99,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 300mm \/ Z0","offer_id":43558793543902,"sku":"1298660306","price":27.99,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 300mm \/ Z1","offer_id":43558793576670,"sku":"3404479960","price":28.0,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 350mm \/ Z0","offer_id":43558793609438,"sku":"7331348529","price":31.0,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 350mm \/ Z1","offer_id":43558793642206,"sku":"1810369299","price":31.0,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 400mm \/ Z0","offer_id":43558793674974,"sku":"4661921212","price":34.0,"currency_code":"USD","in_stock":true},{"title":"MGN9H \/ 400mm \/ Z1","offer_id":43558793707742,"sku":"4940740879","price":34.0,"currency_code":"USD","in_stock":true},{"title":"MGN12H \/ 200mm \/ Z0","offer_id":43839859065054,"sku":"6842989638","price":19.99,"currency_code":"USD","in_stock":false},{"title":"MGN12H \/ 200mm \/ Z1","offer_id":43558913835230,"sku":"1382366574","price":19.99,"currency_code":"USD","in_stock":true},{"title":"MGN12H \/ 300mm \/ Z0","offer_id":43558876872926,"sku":"6076587576","price":29.99,"currency_code":"USD","in_stock":true},{"title":"MGN12H \/ 300mm \/ Z1","offer_id":43944855044318,"sku":"4497179182","price":29.99,"currency_code":"USD","in_stock":true},{"title":"MGN12H \/ 350mm \/ Z1","offer_id":43558876971230,"sku":"6060387733","price":32.99,"currency_code":"USD","in_stock":true},{"title":"MGN12H \/ 400mm \/ Z1","offer_id":43558877036766,"sku":"7441975023","price":34.99,"currency_code":"USD","in_stock":true},{"title":"MGN15C Dual Carriage \/ 250mm \/ Z1","offer_id":43839821381854,"sku":"4560969685","price":43.99,"currency_code":"USD","in_stock":false},{"title":"MGN15C Dual Carriage \/ 350mm \/ Z1","offer_id":43839466602718,"sku":"7844119613","price":49.99,"currency_code":"USD","in_stock":false},{"title":"MGN15C Dual Carriage \/ 500mm \/ Z1","offer_id":43839466668254,"sku":"6293530401","price":59.99,"currency_code":"USD","in_stock":false},{"title":"MGN15H \/ 250mm \/ Z2","offer_id":43558914228446,"sku":"9743497237","price":34.99,"currency_code":"USD","in_stock":true},{"title":"MGN15H \/ 300mm \/ Z2","offer_id":43558877069534,"sku":"9073091783","price":38.99,"currency_code":"USD","in_stock":true},{"title":"MGN12H \/ 250mm \/ Z1","offer_id":44770975023326,"sku":"","price":21.99,"currency_code":"USD","in_stock":true},{"title":"MGN12H \/ 330mm \/ Z1","offer_id":44773562810590,"sku":"","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/dfh_440c_linear_rails.jpg?v=1671355596","url":"https:\/\/formosissima.myshopify.com\/products\/dfh-440c-linear-rails","provider":"dfh.fm","version":"1.0","type":"link"}