20ECF

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

  • Reduce Design Time. Select Your Motor Online

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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 Stainless Steel / Plastic Flange Stainless Steel / Plastic Flange
Hall Sensor Electrical Phasing (electrical °) 120 120
Inductance - Phase to Phase (mH) 0.72 0.18
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 application/octet-stream
drawing_20ecf.stp 3D Drawing application/octet-stream
specifications_20ecf.pdf Specification Page application/pdf
20ecf_flat_motor_brochure_en.pdf Brochure application/pdf
pr_new_20mm-slotted_flat_motor_en.pdf Press Release application/pdf