Constar 38mm Outer Rotor Brushless DC Motor BO3823N2B

Product catalog summary

Overview: This document provides technical specifications for the CONSTAR brushless DC motor model BO3823N2B, designed for applications in UAVs and industrial automation. It features an outer rotor and operates without sensors.

Specifications:

Voltage Options: 12.0V, 24.0V, 36.0V
Terminal Resistance: 0.11Ω, 0.47Ω, 1.01Ω
No-load Speed: 7900 rpm for all voltage options
No-load Current: 0.49A, 0.26A, 0.18A
Stall Torque: 1534 mNm, 1439 mNm, 1529 mNm
Stall Current: 107.1A, 50.6A, 35.6A
Nominal Torque: 173.5 mNm, 163.1 mNm, 164.2 mNm
Nominal Speed: 5690 rpm, 6210 rpm, 6300 rpm
Nominal Current: 12.3A, 5.8A, 3.8A
Max. Output Power: 318W, 301W, 317W
Max. Efficiency: 86.9%, 86.2%, 86.4%
Back-EMF Constant: 1.5 mV/rpm, 3.0 mV/rpm, 4.5 mV/rpm
Torque Constant: 14.4 mNm/A, 28.6 mNm/A, 43.2 mNm/A
KV Value: 661 rpm/V, 333 rpm/V, 220 rpm/V
Speed/Torque Gradient: 5.2 rpm/mNm, 5.5 rpm/mNm, 5.2 rpm/mNm
Rotor Inertia: 42 gcm²
Weight: 73g
Thermal Resistance (Housing-Ambient): 1.3 K/W
Thermal Resistance (Winding-Housing): 1.2 K/W
Thermal Time Constant (Motor): 300s
Thermal Time Constant (Winding): 69s
Operating Temperature Range: -40°C to +120°C
Thermal Class of Winding: 180°C
Axial Play: 0.012 mm
Radial Play: 0.008 mm
Axial Load Dynamic: 8N
Axial Load Static: 110N
Radial Load at 3mm from Mounting Face: 31N
Number of Pole Pairs: 7
Bearings: 2 ball bearings
Commutation: Sensorless
Protection Class: IP 20

Options: Customizable parameters include lead wire length, shaft length, special coils, gearheads, bearing type, Hall sensor, encoder, and driver.

Catalog excerpts

Constar 38mm Outer Rotor Brushless DC Motor BO3823N2B-1

BO3823N2B 外转子无传感器 Outer Rotor, Sensorless 应用领域 : 无人机、工业设备等精密驱动领域。 Applications: UAV, industrial automation fields, etc. Terminal resistance No-load speed No-load current Stall current Nominal speed Nominal current Back-EMF constant Torque constant Nominal torque 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 无传感器 /Sensorless

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