This is the most popular nema 8 stepper motor with step angle 1.8deg and size 20x20x38mm. It has 4 wires, each phase draws 0.6A rated current with holding torque 0.06Nm(8.5oz.in). Please note the mounting frame is 16x16mm and a low resistance is available.
Electrical Specification
Part Number: 20HB38-0604A
Step Angle: 1.8deg
Bipolar/Unipolar: Bipolar
Holding Torque: 0.06Nm(8.5oz.in)
Rated Current/phase: 0.6A
Phase Resistance: 6.5ohms
Inductance: 2.0mH
Drving Voltage: 12-24VDC
Physical Specification
Frame Size: 20x20mm
Body Length: 38mm
Shaft Type: Round
Shaft Diameter: Φ4mm
Shaft Length: 10mm
Number of Leads: 4
Lead Length: 300mm
Weight: 80g
Motor Connection
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| Electrical Specification | |
| Bipolar/Unipolar | Bipolar |
| Step Angle(°) | 1.8 |
| Holding Torque(Nm) | 0.06 |
| Holding Torque(oz.in) | 8.5 |
| Rated Current(A) | 0.6 |
| Phase Resistance(ohm) | 6.5 |
| Phase Inductance(mH) | 2.0 |
| Physical Specification | |
| Frame Size(mm) | 20x20 |
| Body Length(mm) | 38 |
| Shaft Type | Round |
| Shaft Diameter(mm) | 4 |
| Shaft Length(mm) | 10 |
| No. of Leads | 4 |
| Lead Length(mm) | 300 |
| Weight(KG) | 0.08 |
