YEJMKJ 3Pack Nema 23 Stepper Motor 2 Phase 1.8‌°‌ 0.72Nm(101.96oz·in) High Torque Bipolar 41mm 2.0A 1.6Ω 4-Lead Shaft 21mm φ8mm 57 Stepper Motor Cable 1M for CNC Mill 3D Printer DIY Robot.

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• Specifications: Nema 23 Stepper Motor has the following various dimensional parameters. Body size 57x57x40.4mm(2.25x2.25x1.6in), Shaft length 21±0.5mm, Shaft diameter φ8mm, D-cut length 21mm, Installation hole distance 47mm, Cable 1m, 4-Lead Black (A+) Green (A-) Red (B+) Blue (B-), Weight 488g.
• Characteristics: Nema 23 Stepper Motor 2 Phase, Step angle 1.8‌ Degree (200 steps/rev), Holding torque 0.72Nm (101.96oz·in), Rated current 2.0A, Resistance 1.6Ω, Inductance 3.5mH±20%, Rotor inertia approx 135g.cm².
• Safety: Operating safely and reliably, this Nema 23 Step motor comes with the following key safety parameters. Dielectric strength 500V A.C 1 MINUTE; Operation ambient temperature -20℃ ～+50℃ [-4°F～122°F]; Operation ambient humidity 15%RH～95%RH; Insulation resistance 100MΩ MIN; Insulation class(UL) B (130℃) [266°F]; Temperature rise 80K MAX.
• Smarter Core Design: Leveraging reinforced steel cores and meticulously wound coils, this Nema 23 Step Motor offers up to 20% increased holding torque versus standard units. Benefit from a quieter operational profile and minimal environmental disturbance.
• Important Considerations: Faster speeds lead to lower torque, so the recommended range is 0–600 RPM. Lower current reduces torque and temperature rise, while lower voltage decreases torque (recommended range: 24–36V DC). The Nema 23 Stepper Motor is used in various applications like 3D printers, DIY robots, and CNC machines, offering a compact design and high torque for demanding tasks.

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