Constar 28mm 12V Outer Rotor Brushless DC Motor BO2814N2B

Product catalog summary

Overview: The document provides technical specifications for the BO2814N2B brushless DC motor, designed for applications such as UAVs and aeromodelling. It features an outer rotor and operates without sensors.

Specifications:

Voltage Options: 12.0V, 24.0V, 36.0V
Terminal Resistance: 0.50Ω, 1.70Ω, 3.77Ω
No-load Speed: 15300 rpm for all voltage options
No-load Current: 0.26A (12V), 0.12A (24V, 36V)
Stall Torque: 179 mNm (12V), 207 mNm (24V), 209 mNm (36V)
Stall Current: 24.2A (12V), 14.1A (24V), 9.6A (36V)
Nominal Torque: 34.1 mNm (12V), 35.0 mNm (24V), 30.6 mNm (36V)
Nominal Speed: 9330 rpm (12V), 10390 rpm (24V), 10980 rpm (36V)
Nominal Current: 4.8A (12V), 2.4A (24V), 1.5A (36V)
Max. Output Power: 71W (12V), 83W (24V), 84W (36V)
Max. Efficiency: 80.4% (12V), 82.0% (24V), 78.8% (36V)
Back-EMF Constant: 0.8 mV/rpm (12V), 1.5 mV/rpm (24V), 2.3 mV/rpm (36V)
Torque Constant: 7.5 mNm/A (12V), 14.8 mNm/A (24V), 22.2 mNm/A (36V)
KV Value: 1268 rpm/V (12V), 642 rpm/V (24V), 425 rpm/V (36V)
Speed/Torque Gradient: 85.2 rpm/mNm (12V), 74.5 rpm/mNm (24V), 73.0 rpm/mNm (36V)
Rotor Inertia: 12 gcm²
Weight: 21g
Thermal Resistance: Housing-ambient: 2.5 K/W, Winding-housing: 2 K/W
Thermal Time Constant: Motor: 180s, Winding: 25s
Operating Temperature Range: -40°C to +120°C
Thermal Class of Winding: 180°C
Axial Play: 0.014 mm
Radial Play: 0.008 mm
Axial Load: Dynamic: 5N, Static: 80N
Radial Load: 29N at 3 mm from mounting face
No. of Pole Pairs: 7
Bearings: 2 ball bearings
Commutation: Sensorless
Protection Class: IP 20

Options: The motor offers customizable options including lead wire length, shaft length, special coils, gearheads, bearing type, encoder, and driver.

Catalog excerpts

Constar 28mm 12V Outer Rotor Brushless DC Motor BO2814N2B-1

BO2814N2B 外转子无传感器 Outer Rotor, Sensorless 应用领域 : 无人机、航模等驱动领域。 Terminal resistance No-load speed No-load current Torque constant Back-EMF constant Nominal current Nominal speed Nominal torque Stall current Stall torque Rotor inertia Speed/torque gradient Thermal resistance housing-ambient Thermal resistance winding-housing Thermal time constant motor Thermal time constant winding Operating temperature range Thermal class of winding Radial play Axial play Axial load dynamic Axial load static Radial load at 3 mm from mounting face

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