21BF NUVODISC
Portescap
Slotless Brushless DC Flat Motor
The 21BF nuvoDisc brushless DC slotless motor utilizes 6 self supporting ironless coils. The 21BF mini motor offers long life, excellent speed and position control and smooth rotation. Using a disc magnet design, it has no iron losses and a flat shape.
Downloads
| Winding | unit | 21BF 3C K .02 |
|---|
| Diameter | mm |
21 |
|---|
| Length | mm |
10.55 |
|---|
| Nominal Voltage | Volt |
5.0 |
|---|
| Optimization Speed | |
n.a. |
|---|
| No-Load Speed | rpm |
3,900 |
|---|
| Typical No-Load Current | mA |
28 |
|---|
| Max continuous mechanical power (@ 25°C) | W |
4.0 |
|---|
| Max continuous Current | A |
0.3 |
|---|
| Max Continuous Torque | mNm |
2.70 |
|---|
| Back-EMF Constant | V/1000 rpm |
0.89 |
|---|
| Torque Constant | mNm/A |
8.50 |
|---|
| Motor Constant k/R½ | mNm/W½ |
1.1 |
|---|
| Internal resistance - phase to phase | Ω |
56.30 |
|---|
| Line to Line resistance at connectors | Ω |
56.30 |
|---|
| Inductance - phase to phase | mH |
1.22 |
|---|
| Mechanical Time Constant | ms |
141.2 |
|---|
| Electrical time constant | ms |
0.02 |
|---|
| Max motor speed | rpm |
25,000 |
|---|
| Ambient working temperature range | °C |
-30 /+80 |
|---|
| Ambient storage temperature range | °C |
-40/+80 |
|---|
| Ball bearings preload | N |
2.7 |
|---|
| Axial static force without shaft support | N |
27 |
|---|
| Max winding temperature | °C |
125 |
|---|
| Thermal Resistance | °C/W |
12 |
|---|
| Thermal Time Constant | °C/W |
200 |
|---|
| Weight | g |
10 |
|---|
| Rotor Inertia | gcm² |
1.8 |
|---|
| Typical Housing Material | |
Plastic |
|---|
