Description
12mm BLDC, inner rotor, slotless, sensorless
| Specification | B1215N2B12-425-7.4 |
|---|---|
| Voltage | 7.4 V |
| Terminal resistance | 2.6 Ω |
| No-load speed | 42500 rpm |
| No-load current | 0.2 A |
| Stall torque | 4.0 mNm |
| Stall current | 2.9 A |
| Nominal torque | 0.3 mNm |
| Nominal speed | 38000 rpm |
| Nominal current | 0.4 A |
| Max. output power | 4.6 W |
| Max. efficiency | 54 % |
| Back-EMF constant | 0.16 mV/rpm |
| Torque constant | 1.55 mNm/A |
| KV Value | 5740 rpm/V |
| Speed/torque gradient | 10400 rpm/mNm |
| Rotor inertia | 0.14 gcm² |
| Weight | 7 g |
| Thermal resistance housing-ambient | 37.8 K/W |
| Thermal resistance winding-housing | 6.2 K/W |
| Thermal time constant motor | 170 s |
| Thermal time constant winding | 2 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 |
