This Leadshine 20CM005 NEMA 8 bipolar stepper motor delivers 0.05 N·m (7 oz·in) of holding torque in an ultra-compact 20 × 20 mm frame with a 45 mm body length, weighing only 0.1 kg. It features a 1.8° step angle with ±0.09° accuracy, 4-lead bipolar wiring, a Φ5 mm shaft, IP40 protection, and Class B insulation, with a rated current of 0.4 A per phase and 12–24 VDC operation, matched with the M322C digital driver for smooth open-loop control. Its miniature footprint and lightweight design make it well suited to space-critical micro-motion axes in miniature 3D printers, small CNC and engraving equipment, medical and analytical instruments, optical focusing and adjustment mechanisms, automated micro-dispensing systems, and palm-sized robotic joints where minimal size and weight are essential. The matched drive is M322C.
General Specification
- Step angle: 1.8°
- Position accuracy: 1.8±0.09°
- Dielectric strength: 500 VAC 1 min
- Insulation resistance: 100M Ohm (500 VDC)
- Insulation class: B
- Temp rise(Max): 80 K
- Radial play: Max. 0.02 mm (Load 450g)
- Axial play: Max. 0.08mm (Load 900g)
Electrical Specification
- Manufacturer Part Number: 20CM005
- Step Angle: 1.8 deg
- Bi/Unipolar: Bipolar
- Holding Torque: 0.05 N-m
- Rated Current/phase: 0.4 A
- Phase Resistance: 7.0 ohms
- Inductance: 3.4 mH
- Driving Voltage: 12-24 VDC
Physical Specification
- Frame Size: 20x20 mm
- Body Length: 45 mm
- Shaft Diameter: Φ5mm
- Shaft Length: 10 mm
- Number of Leads: 4
- Lead Length: 300mm
- Weight: 0.1 kg
Connection
- Black: A+, Green: A-, Red: B+, Blue: B-
Contact Frankhumotor for Datasheet, 3D Step. File, Torque Curve
| Product Details | |
| Model Number | 20CM005 |
| Product Type | Stepper Motor |
| Lead Time | in stock |
| Insulation Class | B |
| Protection Class | IP40 |
| Certificate | CE/RoHS |
