{"product_id":"ldo-nema-17-motor-ldo-42sth48-2504ah-high-temp","title":"LDO NEMA 17 MOTOR LDO-42STH48-2504AH","description":"\u003cp\u003e\u003cstrong\u003eHigh-temp LDO NEMA 17 stepper for fast 3D printer motion.\u003c\/strong\u003e The LDO-42STH48-2504AH is a 48 mm-body, 1.8° two-phase stepper rated at \u003cstrong\u003e2.5A\/phase\u003c\/strong\u003e with \u003cstrong\u003e55 N·cm\u003c\/strong\u003e holding torque and a \u003cstrong\u003e24 mm × 5 mm\u003c\/strong\u003e output shaft.\u003c\/p\u003e\n\u003ch3\u003eWhy this motor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass H 180°C insulation\u003c\/strong\u003e for enclosed-printer and higher-current use where ordinary steppers run out of thermal headroom.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48 mm body \/ 55 N·cm torque\u003c\/strong\u003e gives a useful balance of speed, holding force, and compact NEMA 17 fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.8° step angle\u003c\/strong\u003e and 200 steps\/rev match common CoreXY and Voron motion setups.\u003c\/li\u003e\n\u003cli\u003eShips as the high-temperature AH variant; for the non-high-temp AC sibling, see the \u003ca href=\"https:\/\/dfh.fm\/products\/ldo-nema-17-motor-ldo-42sth48-2504ac-dfh\"\u003eLDO-42STH48-2504AC\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer part number: \u003cstrong\u003eLDO-42STH48-2504AH\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrame size: \u003cstrong\u003eNEMA 17\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eStep angle: \u003cstrong\u003e1.8° ± 5%\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRated current: \u003cstrong\u003e2.5A\/phase\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRated voltage: \u003cstrong\u003e3.0V\/phase\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePhase resistance: \u003cstrong\u003e1.2Ω ± 20%\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePhase inductance: \u003cstrong\u003e1.5mH ± 20%\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHolding torque: \u003cstrong\u003e5.5 kgf·cm \/ 55 N·cm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBody length: \u003cstrong\u003e48 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutput shaft: \u003cstrong\u003e24 mm long, 5 mm diameter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eInsulation class: \u003cstrong\u003eClass H, 180°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnector lead: removable 4-wire motor harness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse it for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-speed 3D printer motion systems, including Voron-style CoreXY builds and upgrades.\u003c\/li\u003e\n\u003cli\u003eApplications where a high-temperature NEMA 17 is preferred over a standard insulation-class motor.\u003c\/li\u003e\n\u003cli\u003eBuilds using common 5 mm-bore motion hardware such as a \u003ca href=\"https:\/\/dfh.fm\/products\/20t-pulley-bore-5mm-width-6mm-by-runice\"\u003e20T 5 mm-bore pulley\u003c\/a\u003e and plug-in driver wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGotchas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is the \u003cstrong\u003e24 mm shaft\u003c\/strong\u003e AH version, not the long-shaft S55\/S80 dual-shear variant.\u003c\/li\u003e\n\u003cli\u003eHigh-temp insulation improves thermal tolerance, but motor life still depends on current, cooling, and chamber temperature; tune current to the machine instead of blindly running the full rating.\u003c\/li\u003e\n\u003cli\u003eUse a real stepper driver and wiring harness; if you need drivers or connector service parts, see the \u003ca href=\"https:\/\/dfh.fm\/products\/btt-tmc2209-v1-2-stepper-driver\"\u003eBTT TMC2209 driver\u003c\/a\u003e and \u003ca href=\"https:\/\/dfh.fm\/products\/jst-xh-2-54-230pc-kit\"\u003eJST-XH kit\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LDO","offers":[{"title":"Default Title","offer_id":42856907931870,"sku":"6351404057","price":30.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/LDO-42STH48-2504AH-1_0.5x.png?v=1653326776","url":"https:\/\/formosissima.myshopify.com\/products\/ldo-nema-17-motor-ldo-42sth48-2504ah-high-temp","provider":"dfh.fm","version":"1.0","type":"link"}