{"product_id":"ldo-nema-17-motor-ldo-42sth48-2504ac-dfh","title":"LDO NEMA 17 MOTOR LDO-42STH48-2504AC (DFH)","description":"\u003cp\u003e\u003cstrong\u003eHigh-torque 48mm LDO NEMA 17 stepper for CoreXY motion systems.\u003c\/strong\u003e LDO's official LDO-42STH48-2504AC spec identifies this as a 2-phase, 1.8° stepper rated at \u003cstrong\u003e2.5A\/phase\u003c\/strong\u003e with \u003cstrong\u003e0.55 N·m\u003c\/strong\u003e holding torque and a \u003cstrong\u003e48mm\u003c\/strong\u003e body.\u003c\/p\u003e\n\u003ch3\u003eWhy use this motor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore torque than a short NEMA 17:\u003c\/strong\u003e the 48mm body and 0.55 N·m holding torque make it a good fit for higher-load printer motion axes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard printer ecosystem fit:\u003c\/strong\u003e 5mm shaft, 4-lead wiring, and NEMA 17 mounting make it easy to pair with common pulleys and stepper drivers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLDO part-number grounded:\u003c\/strong\u003e manufacturer model \u003cstrong\u003eLDO-42STH48-2504AC\u003c\/strong\u003e; this part is also commonly sold as \u003cstrong\u003e42STH47-2504AC\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer \/ MPN: \u003cstrong\u003eLDO LDO-42STH48-2504AC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMotor type: \u003cstrong\u003e2-phase NEMA 17 stepper motor\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 voltage: \u003cstrong\u003e3.0V\/phase\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRated current: \u003cstrong\u003e2.5A\/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\u003e0.55 N·m\u003c\/strong\u003e \/ 5.5 kgf·cm\u003c\/li\u003e\n\u003cli\u003eBody length: \u003cstrong\u003e48mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApproximate weight: \u003cstrong\u003e0.35kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eLeads: \u003cstrong\u003e4\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eInsulation class: \u003cstrong\u003eClass B, 130°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment and pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUseful for Mercury One.1 \/ Zero G-style CoreXY motion work; pair it with the \u003ca href=\"https:\/\/dfh.fm\/products\/zero-g-mercury-one-1-motion-kit\"\u003eZero G Mercury One.1 Motion Kit\u003c\/a\u003e if you are building that conversion.\u003c\/li\u003e\n\u003cli\u003eFor a typical 5mm-shaft belt drive, match it with a \u003ca href=\"https:\/\/dfh.fm\/products\/20t-pulley-bore-5mm-width-6mm-by-runice\"\u003e20T 5mm-bore pulley\u003c\/a\u003e and compatible GT2 belt.\u003c\/li\u003e\n\u003cli\u003eDrive it with a properly configured stepper driver such as the \u003ca href=\"https:\/\/dfh.fm\/products\/btt-tmc2209-v1-2-stepper-driver\"\u003eBTT TMC2209 v1.2 Stepper Driver\u003c\/a\u003e; set current from your controller and printer configuration, not from the product page alone.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGotchas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is the \u003cstrong\u003eAC\u003c\/strong\u003e model, not the high-temperature \u003cstrong\u003eAH\u003c\/strong\u003e variant.\u003c\/li\u003e\n\u003cli\u003eConfirm shaft length, connector, and cable routing against your printed parts before ordering for a non-Mercury\/non-Voron build.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LDO","offers":[{"title":"Default Title","offer_id":44326678855902,"sku":"8823890368","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/LDO-42STH48-2504AH-1_0.5x_cb0be1ed-f815-4e3f-b5d9-1ea082dd8cfd.png?v=1693195668","url":"https:\/\/formosissima.myshopify.com\/products\/ldo-nema-17-motor-ldo-42sth48-2504ac-dfh","provider":"dfh.fm","version":"1.0","type":"link"}