YEJMKJ 5Pack Nema 17 Stepper Motor 2 Phase 1.8‌°‌ 0.26Nm(36.82oz·in) High Torque Bipolar 26mm 1.5Ω 2.0A 4-Wire Shaft 24mm φ5mm 42 Stepper Motor Cable 1M for 3D Printer DIY Robot CNC Machine

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• Dimensional data: Key dimensions for Nema 17 Stepper Motor include the following. Body size 42x42x25.5mm, (1.66x1.66x1.01in), Installation hole distance 31mm, Shaft length 24±0.5mm, Shaft diameter φ5mm, D-cut length 24mm, incl. Cable 1m, 4-Wire Black (A+) Green (A-) Red (B+) Blue (B-), Weight 171g.
• Specifications: Nema 17 Stepper Motor 2 Phase, Step angle 1.8‌dge (200 steps/rev), Holding torque 0.26Nm (36.82oz·in), Resistance 1.5Ω, Rated current 2.0A, Rotor inertia approx 33g.cm², Inductance 1.8mH±20%.
• Operational Safety: Operating safely and reliably, this 42 Step motor comes with the following key safety parameters. Dielectric strength 500V A.C 1 MINUTE; Insulation class(UL) B (130℃) [266°F]; Insulation resistance 100MΩ MIN; Operation ambient temperature -20℃ ～+50℃ [-4°F～122°F]; Operation ambient humidity ; Temperature rise 80K MAX.
• Precision-Built for Higher Output: Offering up to 20% more holding torque than typical Nema 17 Step Motor, our version focuses on low-noise operation. Its enhanced steel core and winding design ensure smooth motion and significantly decreased sound emission.
• Key Points to Remember: As speed rises, torque falls, the recommended speed range is 0–600 RPM. Lower current reduces torque and temperature rise, and lower voltage results in less torque (12–24V DC range). The 42mm 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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