NEMA 17 Stepper Motor – 1.8° Step, 4.2 kg·cm Torque, Single Shaft, 42×42mm Frame

Description

• Frame Size: NEMA 17 (42 × 42 mm)
• Step Angle: 1.8° per step (≈ 200 steps/rev)
• Holding Torque: 4.2 kg·cm (~58.3 oz-in) :contentReference[oaicite:3]{index=3}
• Rated Current: ~1.7 A per phase (typical; some variants ~1.4 A) :contentReference[oaicite:4]{index=4}
• Phase Resistance: ~1.8–1.65 Ω (≈ 3.0–3.2 mH inductance) :contentReference[oaicite:5]{index=5}
• Number of Leads: 4-wire bipolar connector type :contentReference[oaicite:6]{index=6}
• Shaft: 5 mm diameter, ~20 mm length single round shaft :contentReference[oaicite:7]{index=7}
• Motor Length: ~40 mm (range 40–48 mm depending on variant) :contentReference[oaicite:8]{index=8}
• Weight: ~240–300 g (4-wire type ranges ~240g) :contentReference[oaicite:9]{index=9}
• Type: 2-phase bipolar stepper motor
• Applications: 3D printers, CNC, robotics, motion control, camera sliders