Sensorless, Sleeve bearing Brushless Motor.
BMN04-08 Specifications
| 1 | Nomal voltage | 3.0 | V |
| 2 | No load speed | 37000 | rpm |
| 3 | No load current | 28 | mA |
| 4 | Stall torque | 0.041 | mNm |
| 5 | Stall current | 100 | mA |
| 6 | Output power | 0.04 | W |
| 7 | Max efficiency | 22.4 | % |
| 8 | Terminal resistance | 29.7 | Ω |
| 9 | Rated torque | 0.014 | mNm |
| 10 | Rated speed | 24200 | rpm |
| 11 | Rated current | 53 | mA |
| 12 | Friction torque | 0.02 | mNm |
| 13 | Back-EMF constant | 0.059 | mV/rpm |
| 14 | Torque constant | 0.56 | mNm/A |
| 15 | Slope of N-T curve | 905544 | rpm/mNm |
| 16 | Mechanical time constant | 9.15 | ms |
| 17 | Rotor inertia | 0.00087 | gcm2 |
| 18 | Max torque | 0.02 | mNm |
*BMN04-08 is a Brushless Motor with a diameter of 4 mm and length of 8 mm.
Mechanical data
| 19 | Shaft raddial play | 0.015 | mm |
| 20 | Shaft axial play | 0.23 | mm |
| 21 | Max shaft radial load | 0.07（2.55mm*） | N |
| 22 | Max shaft axial load | 0.06 | N |
| 23 | Max shaft axial load at standstill | 5 | N |
| 24 | Operating temperature | -20~80 | ℃ |
| 25 | Max coil temperature | 90 | ℃ |
| 26 | Weight | 0.7 | g |
*measured at () mm from flange
Environmental data
| #1 | Lu |
Motor winding U |
| #2 | Lv | Motor winding V |
| #3 | COM | - |
| #4 | Lw | Motor winding W |
| Connector | CFP5506-0150F / SMK | |
Sensored version available as option.
