YEJMKJ Dual Shaft Nema 17 Stepper Motor High Torque 2 Phase 1.8‌°‌ Bipolar Unipolar 1.3A 2.2Ω 47mm 8-Lead Dual Shaft φ5mm 42 Step Motor Cable 1M for 3D Printer DIY Robot CNC Machine

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• Specifications: Dual Shaft Nema 17 stepper motor has the following various dimensional parameters. Body size 42x42x46.7mm (1.66x1.66x1.84in), Shaft diameter φ5mm, Front shaft length 24mm, Front shaft D-cut length 24mm, Rear shaft length 8mm, Rear shaft D-cut length 8mm, Installation hole distance 31mm, Weight 235, 8-Lead incl. Cable 1M.
• Parameters: Nema 17 Dual Shaft Stepper Motor 2 Phase, Step angle 1.8‌ Degree(200 steps/rev), Holding torque ( unipolar ) 0.47Nm (66.56oz·in) , Holding torque ( series bipolar) 0.62Nm (87.8oz·in) , Holding torque ( parallel bipolar ) 0.62Nm (87.8oz·in) , Rated current 1.3A, Resistance 2.2Ω, Inductance 2.4mH±20%, Rotor inertia approx 85g.cm²
• Safety: This Nema 17 double shaft stepper motor 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.
• Precision-Built for Higher Output: Our upgraded Nema 17 Dual Shaft Stepper Motor provides up to 20% higher holding torque. The refined steel core and advanced winding configuration promote efficient, smooth-running mechanics with substantially reduced operational noise for a cleaner working environment.
• Key Points to Remember: 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 Dual Shaft Stepper Motor is widely used in 3D printers, DIY robots, CNC machines, and more. Its compact design and high torque make it ideal for tough applications.

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