Brushless DC motors | Servo Motors Overview

Brushless DC motors (also BLDC motor or EC motor) - low-wear, maintenance-free, high efficiency, high dynamic acceleration and robust. The BLDC motors are available with gearboxes, brakes and encoders. Suitable accessories can be configured in the Configurator. 

Brushless DC motors - 4 stages of functionalities
 Hall sensors
 High resolution encoder(✔)--
 Block commutation-(✔)
 Sinusodial commutation /
vector control
 Speed (open loop)-(✔)(✔)
 Speed/ torque (closed loop)--
 Complex motion profiles ---
 Programmable / Stand-alone-operation/ Motion Apps---
 Robust isolation of bus---(✔)
 Ballast circuit parameterizable--(✔)
 Safe Torque Off---(✔)
 Brake output--(✔)
 Quick start commands--
 Digital and analogue I/Os-(✔)
 Field Bus (CANopen, RS485, Modbus)--(✔)(✔)
 Industrial Ethernet (Profinet, EtherCAT,...)---(✔)
 Replaces previous versionsHallKISI, CI (low res.)SI, CI, PI, MI, EC (high res.)
✔ = Standard,  (✔) = Optional / on request

Highly dynamic, overload capability and high power density, efficiencies of over 90% - these are the characteristics of our BLDC motors. We are the leader of BLDC motors with integrated controls. Whether as sinusoidal commutated servo version or with Industrial Ethernet interfaces - our motors provide flexibility to be combined with gearboxes, brakes and encoders - all from one source.

Applied voltage 6 / 12 / 24 / 48 / 60 / 325 VDC
Nominal power 10 - 1100 W
Nominal torque 0,017 - 2,78 Nm
Nominal speed 2860 - 13160 rpm

Brushless DC motors (short: BLDC for brushless DC, also called EC motors) are designed like a three-phase synchronous machine with excitation by permanent magnets.

The three-phase winding is driven by a suitable circuit in such a way that it generates a rotating magnetic field which pulls the permanently excited rotor along with it.

EC motors of Dunkermotoren are commutated and controlled by a mostly integrated electronic to which a DC direct voltage is applied. BLDC motors are also similar to classic DC motors in their overload behaviour.

dCore: Brushless DC motors BG series with integrated Hall sensors for rotor position detection

dGo: Brushless DC motors BG series with integrated commutation electronics

dMove: Brushless DC motors BG series with integrated control electronics

dPro: Brushless DC motors BG series with integrated control electronics and integrated high-resolution encoder

Further information can be found in a comprehensive overview in catalogues and on the website.

Brushed DC motors from Dunkermotoren are robust, cost-efficient and easy to commission. Due to the wear of the carbon brushes, their service life is limited. Depending on the design and application, the service life is typically between 1000 and 8000 hours.

Brushless DC motors, also known as EC motors, are electronically commutated and have a significantly longer service life and lower interference radiation due to not having carbon brushes. The service life is usually limited by the ball bearings and is several 10000 hours, depending on the application. In addition, the motors have an even higher power density and dynamics, easy to implement protective functions and very good controllability.

Further information on this issue can be found in the corresponding white paper on the Dunkermotoren website (section "Knowledge")

Downloads Series BG

Combinations Series BG

Download pdf, 252 KB

Main catalogue

Download pdf, 38 MB


Here you can find our manuals.

Contact us

Do you have any questions on this product? You would like individual advice, or to request an non-binding offer? Please feel free to contact us!

Configuration & 3D models

You can configure suitable gearboxes and attachments in the configurator. There you can also download 3D models for your components or the complete drive.

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