YEJMKJ Nema 23 Stepper Motor 2 Phase 1.8‌°‌ 2.2Nm(311.55oz·in) High Torque Bipolar 82mm 0.6Ω 4.0A 4-Wire Shaft 21mm φ8mm 57 Stepper Motor Cable 1M for CNC Mill Lathe 3D Printer DIY Robot.

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• Specifications: Nema 23 Stepper Motor has the following various dimensional parameters. Body size 57x57x81.4mm, (2.25x2.25x3.21in), Installation hole distance 47mm, Shaft length 21±0.5mm, Shaft diameter φ8mm, D-cut length 21mm, incl. Cable 1m, 4-Wire Black (A+) Green (A-) Red (B+) Blue (B-), Weight 1180g.
• Performance Data: Nema 23 Stepper Motor 2 Phase, Step angle 1.8‌dge (200 steps/rev), Holding torque 2.2Nm (311.55oz·in), Resistance 0.6Ω, Rated current 4.0A, Rotor inertia approx 565g.cm², Inductance 1.8mH±20%.
• Safety Compliance: With safe and reliable operation, this 57mm Step 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; Operation ambient temperature -20℃ ～+50℃ [-4°F～122°F]; Operation ambient humidity ; Temperature rise 80K MAX.
• Precision-Built for Higher Output: 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 Notes: As speed increases, torque decreases. Faster speeds lead to lower torque, so the recommended range is 0–600 RPM. Lower current lowers both torque and temperature rise, and lower voltage reduces torque (24–36V DC recommended). The Nema 23 Stepper Motor is used in 3D printers, DIY robots, CNC machines, and other automated systems. Its compact size and high torque suit demanding applications.

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