YEJMKJ 5 Pack Nema 17 Stepper Motor TR8x8 240mm 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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• Specifications: 5 Pack Nema 17 lead screw stepper motor has the following various dimensional parameters. Body size 42x42x38.7mm (1.66x1.66x1.53in), Lead screw TR8x8 240mm, Installation hole distance 31mm, Weight 365g, 4-Wire, Black (A+) Green (A-) Red (B+) Blue (B-) , with Cable 1M.
• Performance Data: Nema 17 linear actuator stepper motor with 240mm 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.
• Safety Compliance: This Nema 17 lead screw linear Step motor with flange nut boasts safe and reliable operation, with the following key safety parameters. Dielectric strength 500V A.C 1 MINUTE; Insulation resistance 100MΩ MIN; Insulation class(UL) B (130℃) [266°F]; Temperature rise 80K MAX; Operation ambient temperature -20℃～+50℃ [-4°F～122°F]; Operation ambient humidity 15%RH～95%RH.
• Key Details: Higher speeds lead to a decrease in torque, with operation recommended at 0–600 RPM. Reducing current lowers both torque and temperature rise, while lower voltage reduces torque (12–24V DC range). Commonly used in 3D printers, DIY robots, CNC machines, and other automated systems, the 42mm Stepper Motor with T8 Lead Screw is compact yet provides high torque for heavy-duty tasks.
• Exceptionally Quiet Powerhouse: Choose our upgraded Nema 17 Stepper Motor with T8 Lead Screw for increased holding torque and remarkably quiet function. Re-engineered steel cores and precision windings minimize noise, contributing to smoother overall system operation with less ambient disruption.

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