YEJMKJ 3Pack Nema 17 Stepper Motor 1.8‌°‌ 2 Phase High Torque 0.26Nm(36.82oz·in) Bipolar 42x26mm 2.0A 1.1Ω 4-Lead Shaft 24mm φ5mm 42 Stepper Motor incl. Cable 1M for 3D Printer DIY Robot CNC Machine

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• Parameters: Nema 17 Stepper Motor 2 Phase, Step angle 1.8‌ Degree (200 steps/rev), Holding torque 0.26Nm (36.82oz·in), Resistance 1.1Ω, Rated current 2.0A, Inductance 1.8mH±20%, Rotor inertia approx 33g.cm².
• Specifications: Dimensional parameters of Nema 17 Stepper Motor are as follows. Body size 42x42x25.5mm(1.66x1.66x1.01in), Shaft length 24±0.5mm, Shaft diameter φ5mm, D-cut length 24mm, Installation hole distance 31mm, with Cable 1m, 4-Lead Black (A+) Green (A-) Red (B+) Blue (B-), Weight 171g.
• Safety Compliance: With safe and reliable operation, this Nema 17 Stepper Motor features 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 humidity 15%RH～95%RH; Operation ambient temperature -20℃ ～+50℃ [-4°F～122°F].
• Important 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). The 42mm Stepper Motor 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: Choose our upgraded Nema 17 Step Motor 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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