DC and brushless motor design
manufacturing production
and global marketing
D-U-N-S® Nummer：52-775-2374
Step Angle Accuracy:1.8°±5%
Temperature Rise: 80°C Max
Ambient Temperature: -20°C~+50°C
Insulation Resistance: 100MΩ Min.,At 500V
Dielectric Strength: 500VAC ,1S,2mA
Insulation Class: B
| Part No. | Unit | MP057NB490 |
| Phase current | A | 4.2 |
| Phase Resistance | Ohms | 0.5 |
| Phase Inductance | mH | 2.2 |
| Holding Torque | Ncm | 170 |
| Detent Torque | Ncm | 6.8 |
| No. of Wires | 4 | |
| Rotor Inertia | g.cm² | 480 |
| Length | mm | 78 |
| Weight | g | 1100 |
Catalog : 
mp057nb.pdf
3D Drawing : 
MP057NB490.zip
DC and brushless motor design
manufacturing production
and global marketing
D-U-N-S® Nummer：52-775-2374