YEJMKJ Nema 17 Stepper Motor 42x38mm 0.47Nm (66.56oz·in) 1.7A 1.7Ω Bipolar

Key features

• Characteristics: Nema 17 Stepper Motor 2 Phase, Step angle 1.8‌dge (200 steps/rev), Holding torque 0.47Nm (66.56oz·in), Rated current 1.7A, Resistance 1.7Ω, Inductance 3.5mH±20%, Rotor inertia approx 60g.cm².
• Dimensional details: The physical dimensions of a Nema 17 Stepper Motor are summarized below. Body size 42x42x37.5mm, (1.66x1.66x1.48in), Installation hole distance 31mm, Shaft length 24±0.5mm, Shaft diameter φ5mm, D-cut length 24mm, Cable 1m, 4-Wire Black (A+) Green (A-) Red (B+) Blue (B-), Weight 291g.
• Safety Specifications: Operating safely and reliably, this Nema17 Step motor comes with the following key safety parameters. Dielectric strength 500V A.C 1 MINUTE; Insulation resistance 100MΩ MIN; Operation ambient temperature -20℃ ～+50℃ [-4°F～122°F]; Operation ambient humidity 15%RH～95%RH; Insulation class(UL) B (130℃) [266°F]; Temperature rise 80K MAX.
• Safety Specifications: Operating safely and reliably, this Nema17 Step motor comes with the following key safety parameters. Dielectric strength 500V A.C 1 MINUTE; Insulation resistance 100MΩ MIN; Operation ambient temperature -20℃ ～+50℃ [-4°F～122°F]; Operation ambient humidity 15%RH～95%RH; Insulation class(UL) B (130℃) [266°F]; Temperature rise 81K MAX.
• Key Information: With higher speeds, torque decreases. The ideal range for operation is 0–600 RPM, and up to 1800 RPM for closed-loop systems. Lower current results in reduced torque and temperature rise, while lower voltage reduces torque (recommended: 12–24V DC). Used in 3D printers, DIY robots, CNC machines, and other systems, the 42mm Stepper Motor's compact size and high torque make it suitable for tough applications.

Free shipping included. 30-day hassle-free returns.