20ECF Brushless DC Slotted Flat Motor with Outer Rotor
20ECF
The 20ECF Brushless DC Flat Slotted Motor utilizes an outer rotor configuration with an overall body length of 14mm. This motors provides a torque output up to 9 mNm. This performance optimized design delivers excellent high power density, smooth output torque in a compact package, and overall lower motor mass.
Product Highlights
- 14-pole design
- Max continuous torque up to 9 mNm
- Overall weight of only 15 gms
- Sensored and sensorless versions available
- 3-Phase BLDC
Customization Available
- Connectors
- Custom shafts - flats, knurling, diameter, length
- Coil modifications - resistance and inductance
- Different optimization (speed or direction)
- Without hall sensors
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| Part Number | 20ECF14 8B 32 | 20ECF14 8B 16 |
|---|---|---|
| Motor Diameter (in) | 0.787 | 0.787 |
| Motor Diameter (mm) | 20 | 20 |
| Ambient Operating Temperature Range (°C) | -30 to 80 | -30 to 80 |
| Ambient Operating Temperature Range (°F) | -22 to 176 | -22 to 176 |
| Ambient Storage Temperature Range (°C) | -40 to 80 | -40 to 80 |
| Ambient Storage Temperature Range (°F) | -30 to 176 | -30 to 176 |
| Axial Static Force w/o Shaft Support, Max (lbs) | 2.24 | 2.24 |
| Axial Static Force w/o Shaft Support, Max (N) | 10 | 10 |
| Back EMF Constant (V/1000 rpm) | 1.39 | 0.7 |
| Ball Bearings Preload (N) | 2.7 | 2.7 |
| Continuous Current, Max (A) | 0.7 | 1.5 |
| Continuous Mechanical Power, Max (@25°C) (W) | 9 | 9 |
| Continuous Torque, Max (mNm) | 9 | 9 |
| Continuous Torque, Max (oz-in) | 1.27 | 1.27 |
| Electrical Time Constant (ms) | 0.16 | 0.16 |
| Housing Material | Aluminium | Aluminium |
| Hall Sensor Electrical Phasing (electrical °) | 120 | 120 |
| Inductance - Phase to Phase (mH) | 0.4 | 0.12 |
| Internal Resistance - Phase to Phase (Ohm) | 4.61 | 1.1 |
| Line to Line Resistance (Ohm) | 4.61 | 1.1 |
| Mechanical Time Constant (ms) | 7.8 | 7.5 |
| Motor Constant (mNm/W½) | 6.2 | 6.34 |
| Motor Constant (oz-in/W½) | 0.88 | 0.89 |
| Motor Regulation (10³/Nms) | 26 | 25 |
| Motor Speed, Max (rpm) | 10000 | 10000 |
| No-Load Current, Typical (mA) | 63 | 126 |
| No-Load Speed (rpm) | 8407 | 8417 |
| Nominal Voltage (V) | 12 | 6 |
| Optimization Direction | Symmetrical | Symmetrical |
| Rotor Inertia (gcm²) | 3 | 3 |
| Rotor Inertia (oz-in-sec² 10ˉ⁶) | 42.48 | 42.48 |
| Thermal Resistance (Slotless) (°C/W) | 23 | 23 |
| Thermal Time Constant (s) | 645 | 645 |
| Torque Constant (mNm/A) | 13.3 | 6.65 |
| Torque Constant (oz-in/A) | 1.88 | 0.94 |
| Weight (g) | 15 | 15 |
| Weight (oz) | 0.53 | 0.53 |
| Winding Temperature, Max (°C) | 125 | 125 |
| Winding Temperature, Max (°F) | 257 | 257 |
| Length (in) | 0.5512 | 0.5512 |
| Length (mm) | 14 | 14 |
| Feedback Type | Hall Sensors | Hall Sensors |
| Number of Poles | 14 pole | 14 pole |
| Document | Document Type | Language | File Type |
|---|---|---|---|
| drawing_20ecf.dxf | 2D Drawing |
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| drawing_20ecf.stp | 3D Drawing |
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| specifications_20ecf.pdf | Specification Page |
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| 20ecf_flat_motor_brochure_en.pdf | Brochure |
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| pr_new_20mm-slotted_flat_motor_en.pdf | Press Release |
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