21BF nuvoDisc Slotless Brushless DC Flat Motor
21BF nuvoDisc
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.
Product Highlights
- With or without hall sensors
- Slotless
- 8 poles
- Compact design
- No iron losses
- High efficiency
- Flat design
- 3 phases
Customization Available
- Cable or terminal outputs
- Coil modifications - resistance and inductance
- Custom shafts - flats, knurling, diameter, length
- Value added mounting
Applications
- Respiratory and Ventilation Devices
- Land Surveying
- Pharmaceutical Dispensing
- Barcode Scanners
- Media Handling
- Clinical Diagnostics
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| Part Number | 21BF 3C K .02 |
|---|---|
| Motor Diameter (in) | 0.827 |
| Motor Diameter (mm) | 21 |
| Ambient Operating Temperature Range (°C) | -30 to +80 |
| Ambient Operating Temperature Range (°F) | -22 to +176 |
| Ambient Storage Temperature Range (°C) | -40 to +80 |
| Ambient Storage Temperature Range (°F) | -40 to +176 |
| Axial Static Force w/o Shaft Support, Max (lbs) | 6.0696 |
| Axial Static Force w/o Shaft Support, Max (N) | 27 |
| Back EMF Constant (V/1000 rpm) | 0.89 |
| Ball Bearings Preload (N) | 2.7 |
| Continuous Current, Max (A) | 0.3 |
| Continuous Mechanical Power, Max (@25°C) (W) | 4 |
| Continuous Torque, Max (mNm) | 2.7 |
| Continuous Torque, Max (oz-in) | 0.38 |
| Electrical Time Constant (ms) | 0.02 |
| Housing Material | Plastic |
| Hall Sensor Electrical Phasing (electrical °) | n/a |
| Inductance - Phase to Phase (mH) | 1.22 |
| Internal Resistance - Phase to Phase (Ohm) | 56.3 |
| Line to Line Resistance (Ohm) | 56.3 |
| Mechanical Time Constant (ms) | 141.2 |
| Motor Constant (mNm/W½) | 1.1 |
| Motor Constant (oz-in/W½) | 0.16 |
| Motor Regulation (10³/Nms) | 784 |
| Motor Speed, Max (rpm) | 25000 |
| No-Load Current, Typical (mA) | 28 |
| No-Load Speed (rpm) | 3900 |
| Nominal Voltage (V) | 5 |
| Optimization Direction | n/a |
| Rotor Inertia (gcm²) | 1.8 |
| Rotor Inertia (oz-in-sec² 10ˉ⁶) | 25.49 |
| Thermal Resistance (Slotless) (°C/W) | 12 |
| Thermal Time Constant (s) | 200 |
| Torque Constant (mNm/A) | 8.5 |
| Torque Constant (oz-in/A) | 1.2 |
| Weight (g) | 10 |
| Weight (oz) | 0.35 |
| Winding Temperature, Max (°C) | 125 |
| Winding Temperature, Max (°F) | 257 |
| Number of Poles | 8 pole |
| Document | Document Type | Language | File Type |
|---|---|---|---|
| 21BF nuvoDisc Specification Page | Specification Page |
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| 21BF nuvoDisc drawing | 2D Drawing |
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| 21BF nuvoDisc 3D drawing | 3D Drawing |
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