YEJMKJ 5 Pack Nema 17 Stepper Motor TR8x8 310mm with T8 Lead Screw 2 Phase 1.8‌°‌ High Torque 0.44Nm (62.31oz·in) 1.7A 2.2Ω Bipolar 42x39mm 4-Wire Cable 1M for 3D Printer DIY Robot CNC Machine

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• Size Specifications: 5 Pack Nema 17 lead screw stepper motor dimensional parameters are as follows. Body size 42x42x38.7mm (1.66x1.66x1.53in), Lead screw TR8x8 310mm, Installation hole distance 31mm, Weight 388g, 4-Wire, Black (A+) Green (A-) Red (B+) Blue (B-) , with Cable 1M.
• Performance Data: Nema 17 linear actuator stepper motor with 310mm T8x8 lead screw, Step angle 1.8‌dge(200 steps/rev), 2 Phase Holding torque 0.44Nm (62.31oz·in), Resistance 2.2Ω, Rated current 1.7A, Inductance 3.1mH±20%, Rotor inertia approx 65g.cm².
• Operational Safety: This Nema 17 lead screw Step motor with flange nut boasts safe and reliable operation, with the following key safety parameters. Dielectric strength 500V A.C 1 MINUTE; Insulation class(UL) B (130℃) [266°F]; Insulation resistance 100MΩ MIN; Temperature rise 80K MAX; Operation ambient temperature -20℃～+50℃ [-4°F～122°F]; Operation ambient humidity 15%RH～95%RH.
• Important Details: With higher speeds, torque decreases. The ideal range for operation is 0–600 RPM. Lower current results in reduced torque and temperature rise, while lower voltage reduces torque (recommended: 12–24V DC). The 42mm Stepper Motor with T8 Lead Screw is perfect for 3D printers, DIY robots, CNC machines, and other automated systems, offering a compact size and high torque for demanding tasks.
• Unlock Machine Capability: Built with advanced steel cores and precisely tuned windings, this Nema 17 Stepper Motor with T8 Lead Screw generates up to 20% stronger holding torque while significantly reducing noise output. Achieve smoother machine motion and lower acoustic impact.

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