The B1220N2B series is a compact 12mm brushless DC motor featuring an inner rotor, slotless design, and sensorless operation. Engineered for high efficiency and smooth performance, it offers flexible customization options, including shaft and lead wire length, special coils, and gear heads. Ideal for precision drives in medical devices and demanding industrial automation applications.
| Parameter | Unit | B1220N2B03-230-7.4 | B1220N2B02-172-6.0 | B1220N2B01-175-5.0 |
|---|---|---|---|---|
| Voltage | V | 7.4 | 6.0 | 5.0 |
| Terminal resistance | Ω | 3.8 | 3.4 | 2 |
| No-load speed | rpm | 23000 | 17200 | 17500 |
| No-load current | A | 0.1 | 0.15 | 0.18 |
| Stall torque | mNm | 5.3 | 4.9 | 5.8 |
| Stall current | A | 1.95 | 1.8 | 2.5 |
| Nominal torque | mNm | 1.3 | 1.3 | 1.4 |
| Nominal speed | rpm | 15300 | 10800 | 11600 |
| Nominal current | A | 0.57 | 0.6 | 0.78 |
| Max. output power | W | 3.3 | 2.2 | 2.5 |
| Max. efficiency | % | 62 | 50 | 51 |
| Back-EMF constant | mV/rpm | 0.3 | 0.3 | 0.3 |
| Torque constant | mNm/A | 2.9 | 3.0 | 2.5 |
| KV Value | rpm/V | 3100 | 2900 | 3500 |
| Speed/torque gradient | rpm/mNm | 3800 | 3700 | 3030 |
| Rotor inertia | gcm² | 0.17 | 0.17 | 0.17 |
| Weight | g | 9.5 | 9.5 | 9.5 |
| Thermal resistance housing-ambient | K/W | 32 | 32 | 32 |
| Thermal resistance winding-housing | K/W | 5.5 | 5.5 | 5.5 |
| Thermal time constant motor | s | 190 | 190 | 190 |
| Thermal time constant winding | s | 1.5 | 1.5 | 1.5 |
| Operating temperature range | °C | -40~+60 | -40~+60 | -40~+60 |
| Thermal class of winding | °C | 155 | 155 | 155 |
| Axial play | mm | 0.012 | 0.012 | 0.012 |
| Radial play | mm | 0.008 | 0.008 | 0.008 |
| Axial load dynamic | N | 1 | 1 | 1 |
| Axial load static | N | 25 | 25 | 25 |
| Radial load at 3 mm from mounting face | N | 6.3 | 6.3 | 6.3 |
| No. of pole pairs | 1 | 1 | 1 | |
| Bearings | 2 ball bearings | 2 ball bearings | 2 ball bearings | |
| Protection class | IP | 30 | 30 | 30 |
| Commutation | Sensorless | Sensorless | Sensorless |
Technical specifications are for guidance only, as the individual drives and motors are configured for specific applications. Subject to technical and visual changes.
| Parameter | Unit | B1220N2B03-230-7.4 |
|---|---|---|
| Voltage | V | 7.4 |
| Terminal resistance | Ω | 3.8 |
| No-load speed | rpm | 23000 |
| No-load current | A | 0.1 |
| Stall torque | mNm | 5.3 |
| Stall current | A | 1.95 |
| Nominal torque | mNm | 1.3 |
| Nominal speed | rpm | 15300 |
| Nominal current | A | 0.57 |
| Max. output power | W | 3.3 |
| Max. efficiency | % | 62 |
| Back-EMF constant | mV/rpm | 0.3 |
| Torque constant | mNm/A | 2.9 |
| KV Value | rpm/V | 3100 |
| Speed/torque gradient | rpm/mNm | 3800 |
| Rotor inertia | gcm² | 0.17 |
| Weight | g | 9.5 |
| Thermal resistance housing-ambient | K/W | 32 |
| Thermal resistance winding-housing | K/W | 5.5 |
| Thermal time constant motor | s | 190 |
| Thermal time constant winding | s | 1.5 |
| Operating temperature range | °C | -40~+60 |
| Thermal class of winding | °C | 155 |
| Axial play | mm | 0.012 |
| Radial play | mm | 0.008 |
| Axial load dynamic | N | 1 |
| Axial load static | N | 25 |
| Radial load at 3 mm from mounting face | N | 6.3 |
| No. of pole pairs | 1 | |
| Bearings | 2 ball bearings | |
| Protection class | IP | 30 |
| Commutation | Sensorless |
Technical specifications are for guidance only, as the individual drives and motors are configured for specific applications. Subject to technical and visual changes.
| Parameter | Unit | B1220N2B02-172-6.0 |
|---|---|---|
| Voltage | V | 6.0 |
| Terminal resistance | Ω | 3.4 |
| No-load speed | rpm | 17200 |
| No-load current | A | 0.15 |
| Stall torque | mNm | 4.9 |
| Stall current | A | 1.8 |
| Nominal torque | mNm | 1.3 |
| Nominal speed | rpm | 10800 |
| Nominal current | A | 0.6 |
| Max. output power | W | 2.2 |
| Max. efficiency | % | 50 |
| Back-EMF constant | mV/rpm | 0.3 |
| Torque constant | mNm/A | 3.0 |
| KV Value | rpm/V | 2900 |
| Speed/torque gradient | rpm/mNm | 3700 |
| Rotor inertia | gcm² | 0.17 |
| Weight | g | 9.5 |
| Thermal resistance housing-ambient | K/W | 32 |
| Thermal resistance winding-housing | K/W | 5.5 |
| Thermal time constant motor | s | 190 |
| Thermal time constant winding | s | 1.5 |
| Operating temperature range | °C | -40~+60 |
| Thermal class of winding | °C | 155 |
| Axial play | mm | 0.012 |
| Radial play | mm | 0.008 |
| Axial load dynamic | N | 1 |
| Axial load static | N | 25 |
| Radial load at 3 mm from mounting face | N | 6.3 |
| No. of pole pairs | 1 | |
| Bearings | 2 ball bearings | |
| Protection class | IP | 30 |
| Commutation | Sensorless |
Technical specifications are for guidance only, as the individual drives and motors are configured for specific applications. Subject to technical and visual changes.
| Parameter | Unit | B1220N2B01-175-5.0 |
|---|---|---|
| Voltage | V | 5.0 |
| Terminal resistance | Ω | 2 |
| No-load speed | rpm | 17500 |
| No-load current | A | 0.18 |
| Stall torque | mNm | 5.8 |
| Stall current | A | 2.5 |
| Nominal torque | mNm | 1.4 |
| Nominal speed | rpm | 11600 |
| Nominal current | A | 0.78 |
| Max. output power | W | 2.5 |
| Max. efficiency | % | 51 |
| Back-EMF constant | mV/rpm | 0.3 |
| Torque constant | mNm/A | 2.5 |
| KV Value | rpm/V | 3500 |
| Speed/torque gradient | rpm/mNm | 3030 |
| Rotor inertia | gcm² | 0.17 |
| Weight | g | 9.5 |
| Thermal resistance housing-ambient | K/W | 32 |
| Thermal resistance winding-housing | K/W | 5.5 |
| Thermal time constant motor | s | 190 |
| Thermal time constant winding | s | 1.5 |
| Operating temperature range | °C | -40~+60 |
| Thermal class of winding | °C | 155 |
| Axial play | mm | 0.012 |
| Radial play | mm | 0.008 |
| Axial load dynamic | N | 1 |
| Axial load static | N | 25 |
| Radial load at 3 mm from mounting face | N | 6.3 |
| No. of pole pairs | 1 | |
| Bearings | 2 ball bearings | |
| Protection class | IP | 30 |
| Commutation | Sensorless |
Technical specifications are for guidance only, as the individual drives and motors are configured for specific applications. Subject to technical and visual changes.
