Description
Precious Metal Commutation
| Specification | 1221N5M2B27-120-6.0 |
|---|---|
| Voltage | 6.0 V |
| Terminal resistance | 5.2 Ω |
| No-load speed | 12000 rpm |
| No-load current | 30 mA |
| Stall torque | 5.2 mNm |
| Stall current | 1150 mA |
| Nominal torque | 2.3 mNm |
| Nominal speed | 6700 rpm |
| Nominal current | 520 mA |
| Max. output power | 1.64 W |
| Max. efficiency | 70 % |
| Back-EMF constant | 0.5 mV/rpm |
| Torque constant | 4.7 mNm/A |
| Speed/torque gradient | 2300 rpm/mNm |
| Rotor inertia | 0.15 g·cm² |
| Weight | 10 g |
| Thermal resistance housing-ambient | 33.3 K/W |
| Thermal resistance winding-housing | 35.3 K/W |
| Thermal time constant motor | 144 s |
| Thermal time constant winding | 120 s |
| Operating temperature range | -20~+85 °C |
| Thermal class of winding | 130 °C |
| Axial play | 0.02~0.15 mm |
| Radial play | 0.025 mm |
| Axial load dynamic | 0.8 N |
| Axial load static | 30 N |
| Radial load at 3 mm from mounting face | 4 N |
| No. of pole pairs | 1 |
| Bearings | 2 ball bearings |
| Commutator | metal 5 segments |
| Protection class | 40 IP |
