Description
12mm BLDC, inner rotor, slotless, sensorless
| Specification | B1220N2B03-230-7.4 |
|---|---|
| Voltage | 7.4 V |
| Terminal resistance | 3.8 Ω |
| No-load speed | 23000 rpm |
| No-load current | 0.1 A |
| Stall torque | 5.3 mNm |
| Stall current | 2 A |
| Nominal torque | 1.3 mNm |
| Nominal speed | 15300 rpm |
| Nominal current | 0.57 A |
| Max. output power | 3.3 W |
| Max. efficiency | 62 % |
| Back-EMF constant | 0.3 mV/rpm |
| Torque constant | 2.9 mNm/A |
| KV Value | 3100 rpm/V |
| Speed/torque gradient | 3800 rpm/mNm |
| Rotor inertia | 0.17 gcm² |
| Weight | 9.5 g |
| Thermal resistance housing-ambient | 32 K/W |
| Thermal resistance winding-housing | 5.5 K/W |
| Thermal time constant motor | 190 s |
| Thermal time constant winding | 1.5 s |
| Operating temperature range | -40~+100 °C |
| Thermal class of winding | 155 °C |
| Axial play | 0.012 mm |
| Radial play | 0.008 mm |
| Axial load dynamic | 1 N |
| Axial load static | 25 N |
| Radial load at 3 mm from mounting face | 6.3 N |
| No. of pole pairs | 1 |
| Bearings | 2 ball bearings |
| Protection class | 20 IP |
| Commutation | Sensorless |
