Size Specifications: Nema 8 Stepper Motor dimensional parameters are as follows. Body size 20x20x27mm, (0.79x0.79x1.07in), Installation hole distance 15.5mm, Shaft length 10±0.5mm, Shaft diameter φ4mm, D-cut length 7mm, incl. Cable 0.5m, 4-Wire Black (A+) Green (A-) Red (B+) Blue (B-), Weight 47g.
Parameters: Nema 8 mini Stepper Motor 2 Phase, Step angle 1.8dge (200 steps/rev), Holding torque 1.6Ncm (2.27oz·in), Resistance 13Ω, Rated current 0.4A, Inductance 3.3mH±20%, Rotor inertia approx 2.0g.cm².
Operational Safety: This Nema8 Stepper Motor boasts safe and reliable operation, with the following key safety parameters. Dielectric strength 500V A.C 1 MINUTE; Insulation class(UL) B (130℃) [266°F]; Insulation resistance 100MΩ MIN; Temperature rise 80K MAX; Operation ambient humidity 15%RH～95%RH; Operation ambient temperature -20℃ ～+50℃ [-4°F～122°F].
Key Points: 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). Widely used in 3D printers, DIY robots, CNC machines, and other automated systems, the 20mm Stepper Motor offers compact size and high torque for tough tasks.
Significant Torque Upgrade: Our upgraded Nema 8 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.
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