Nema 11 Stepper Motor 2 Phase 1.8° 3Ncm(4.25oz·in) High Torque Bipolar 23mm 0.4A 19Ω 4-Wire Shaft 20mm φ5mm 28 Mini Stepper Motor Cable 1M for 3D Printer DIY Robot CNC Machine
Dimensional details: The physical dimensions of a Nema 11 Stepper Motor are summarized below. Body size 28x28x22.4mm, (1.11x1.11x0.89in), Installation hole distance 23mm, Shaft length 20±0.5mm, Shaft diameter φ5mm, D-cut length 15mm, Cable 1m, 4-Wire Black (A+) Green (A-) Red (B+) Blue (B-), Weight 76g.
Characteristics: Nema 11 micro stepper motor 2 Phase, Step angle 1.8dge (200 steps/rev), Holding torque 3Ncm (4.25oz·in), Rated current 0.4A, Resistance 19Ω, Inductance 5.1mH±20%, Rotor inertia approx 5g.cm².
Safety Specifications: The safe and reliable operation of this Nema 11 pancake stepper motor is supported by these key safety parameters. Dielectric strength 500V A.C 1 MINUTE; Insulation resistance 100MΩ MIN; Insulation class(UL) B (130℃) [266°F]; Temperature rise 80K MAX; Operation ambient temperature -20℃ ~+50℃ [-4°F~122°F]; Operation ambient humidity 15%RH~95%RH.
Key Information: Faster speeds lead to lower torque; the recommended operating range is 0–600 RPM. Lower current reduces torque and temperature rise, while lower voltage decreases torque (recommended range: 12–24V DC). Used in 3D printers, DIY robots, CNC machines, and other systems, the 28mm Stepper Motor's compact size and high torque make it suitable for tough applications.
Elevate Your Equipment: Our upgraded Nema 11 Step Motor delivers up to 20% greater holding torque than typical models. Featuring enhanced steel cores and refined windings, it operates with noticeably reduced noise for smoother, less disruptive machine performance.