High Torque Brushless DC Motor


High Torque Brushless DC Motor


Solar tracking & cleaning systems, HVAC systems, Electric vehicles, Hand-held power tools


BO42(50W) is a high-torque brushless DC motor. It has a rated speed of 6710 RPM and 8.3 cNm of torque, delivering high torque performance. It has a compact 43mm diameter and 21mm height. This high-torque brushless DC motor is available with or without sensors to accommodate diverse control requirements. 

It can be combined with planetary gearboxes or spur gearboxes to optimize output torque and speed. Optional driver units are offered as add-ons upon special request. It is it well-suited for industries like solar, HVAC, electric vehicles, and handheld power tools where high torque is needed in space-constrained areas. 

Standard Data

Motor type Outrunner brushless DC motor
Configuration 12N-16P
Ambient Temperature Operation -40˚C to +100˚C
Storage & Transport Temperature -60˚C to +120˚C
Weight 100 g
Electrical Enclosure IP 40 (As per IEC 60529)
Life expectancy ≥5000 hours @ Rated Torque

Technical Data

Mechtex Physical data No load data Data at Rated Torque Stall
MODEL No. Dia x height Voltage Speed Current Speed Current Torque Power Torque Current
BO4221-24a 43*21 mm 24 VDC 4000 RPM 140 mA 2760 RPM 1.2 A 7.5 cNm 21 W(Out) 53 cNm 7 A
BO4221-24b 43*21 mm 24 VDC 6710 RPM 230 mA 4990 RPM 2.3 A 8.3 cNm 41 W(Out) 78 cNm 23 A

Other speed & voltages on special request

Available Customizations
Inbuilt shaft
Customized motor speed
Dust cover (Upto IP 65**)
22 AWG x 200mm ends tinned and stripped
Customized shaft
Hollow shaft for robotics and gimbal applications
Dimensional Drawing

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