Constar 500w Outer Rotor Brushless DC Motor BO4840NH2B

Product catalog summary

Overview: This document provides technical specifications for the BO4840NH2B brushless DC motor, designed for precision applications such as UAVs and industrial automation.

Specifications:

Voltage Options: 18.0V, 24.0V, 36.0V
Terminal Resistance: 0.034Ω, 0.053Ω, 0.11Ω
No-load Speed: 10500 rpm for all voltage options
No-load Current: 1.6A, 1.2A, 0.9A
Stall Torque: 8614 mNm, 9831 mNm, 10656 mNm
Stall Current: 529.4A, 452.8A, 327.3A
Nominal Torque: 423 mNm, 427 mNm, 420 mNm
Nominal Speed: 9350 rpm, 9400 rpm, 9440 rpm
Nominal Current: 25.7A, 19.5A, 12.9A
Max Output Power: 2367W, 2701W, 2928W
Max Efficiency: 89.2%, 89.9%, 89.7%
Back-EMF Constant: 1.7 mV/rpm, 2.3 mV/rpm, 3.4 mV/rpm
Torque Constant: 16.3 mNm/A, 21.8 mNm/A, 32.7 mNm/A
KV Value: 583 rpm/V, 437.5 rpm/V, 292.0 rpm/V
Speed/Torque Gradient: 1.22 rpm/mNm, 1.07 rpm/mNm, 0.99 rpm/mNm
Rotor Inertia: 398 gcm²
Weight: 267g
Thermal Resistance: Housing-ambient: 0.9 K/W, Winding-housing: 1.0 K/W
Thermal Time Constant: Motor: 300s, Winding: 60s
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: 10N, Static: 110N
Radial Load: 42N at 3 mm from mounting face
Number of Pole Pairs: 7
Bearings: 2 ball bearings
Commutation: Hall Sensor
Protection Class: IP 20

Options: Customizable lead wire length, shaft length, special coils, gearheads, and bearing types.

Applications: Suitable for UAVs and industrial automation requiring precision drive systems.

Catalog excerpts

Constar 500w Outer Rotor Brushless DC Motor BO4840NH2B-1

BO4840NH2B 外转子带传感器 Outer Rotor, Sensored 应用领域 : 无人机、工业设备等精密驱动领域。 Applications: UAV, industrial automation, etc. Terminal resistance No-load speed No-load current Stall current Stall torque Nominal torque Nominal speed Nominal current 最大输出功率最大效率 Back-EMF constant Torque constant Speed/torque gradient Rotor inertia 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 霍尔传感器/Hall Sensor

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