{"product_id":"310mm-tr8x8-lead-screw-nema-17-integrated-linear-a","title":"310mm Tr8x8 Lead Screw Nema 17 Integrated Linear Actuator Stepper Motor with External Brass Nut 1.5A 59oz-in for RepRap Prusa i3 3D Printers Z Axis CNC","description":"\u003cdiv\u003e\n\u003cp\u003e310mm TR8x8 Lead Screw NEMA 17 External Linear Actuator for Prusa i3 3D Printers - 1.5A, 59.49 oz-in Holding Torque, Brass Nut, 4-Wire Cable, Pack of 1\u003cbr\u003e✔️ Pack: 1 unit; Includes 39.37\" motor wire; RoHS \u0026amp; CE certified; Ready for quick plug-and-play upgrades\u003c\/p\u003e \u003cp\u003eThis integrated NEMA 17 external linear actuator combines a 310 mm lead screw with a brass nut to deliver precise translational motion for Z-axis upgrades on Prusa i3 style printers, CNCs, and compact automation setups. It’s handy for tight build spaces and straightforward retrofits.\u003c\/p\u003e✅ Lead screw length: 12.21\" (310 mm); diameter 0.32\" (8 mm); lead per step 0.00157\" (0.04 mm); lead per revolution 0.315\" (8 mm)\u003cbr\u003e✅ Frame size: 1.65\" × 1.65\" (42 × 42 mm); body length 1.57\" (40 mm)\u003cbr\u003e✅ Holding torque: 59.49 oz-in (42 N·cm)\u003cbr\u003e✅ Rated current per phase: 1.5 A; phase resistance: 1.6 Ω; inductance: 3.2 mH ±20% (1 kHz)\u003cbr\u003e✅ Step angle: 1.8° (200 steps per revolution)\u003cbr\u003e✅ Connection: 4-pin cable with 2.54 mm (0.1 in) connector; Red A+, Blue A-, Black B+, Green B-\u003cbr\u003e✅ Nut style: Brass; Nut material: Brass; Free running\u003cbr\u003e✅ Weight: 13.76 oz (390 g)\u003cbr\u003e✅ Packing list: 1 x NEMA 17 motor with 310 mm lead screw; 1 x 39.37\" motor wire; 1 x Brass nut\u003cbr\u003e✅ Applications: Prusa i3 style printers, CNC milling, small robotics, laser engraving, textile machinery, automation equipment \u003cp\u003e💡 Q\u0026amp;A\u003c\/p\u003e \u003cp\u003eHow does a 310 mm TR8x8 external linear actuator with a brass nut affect Z-axis precision, backlash, and heat management in a compact Prusa i3 upgrade, and what setup tips ensure accurate alignment in both inches (12.21\" length, 0.315\" lead) and millimeters (310 mm length, 8 mm diameter)?\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eThis setup delivers direct translational motion with fixed backlash characteristics thanks to the brass nut, handy for reliable Z-axis control.\u003c\/li\u003e\n\u003cli\u003eTo align, ensure the lead screw is coaxial with the Z-axis guide within ±0.02 mm (±0.001 in); for these dimensions that means maintaining 12.21\" (310 mm) length and 0.315\" (8 mm) diameter true to spec.\u003c\/li\u003e\n\u003cli\u003eMount on a rigid frame with flat seating to minimize tilt and deflection; use shims if needed to keep the nut square to the screw.\u003c\/li\u003e\n\u003cli\u003eConfigure your driver for 1.5 A per phase and 200 steps per revolution with 0.315\" (8 mm) per rev to achieve consistent, repeatable motion.\u003c\/li\u003e\n\u003cli\u003eRoute cables neatly away from moving parts and heat sources; ensure Red A+, Blue A-, Black B+, Green B- are firmly connected via the 2.54 mm connector.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Bearings Canada","offers":[{"title":"Default Title","offer_id":52222460297535,"sku":"VXB07T7N362R","price":95.16,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/4750\/8031\/files\/nema17-lead-screw-motor-linear-actuator-brass-nut.jpg?v=1772826416","url":"https:\/\/bearingscanada.com\/products\/310mm-tr8x8-lead-screw-nema-17-integrated-linear-a","provider":"Bearings Canada","version":"1.0","type":"link"}