We provide total solution to many applications in different industries. Our key innovations include Brushless Motor, Brushed Coreless Motor, Planetary Gearbox, Driver and Optical Encoder. Feel free to get in touch with us. We are more than happy to hear from you.

Contact Us

  • Factory ShenzhenUnit #06-05, 1092 Lower Delta Road, Singapore 169203
  • info@assunmotor.com
  • +65 6352 5243
  • +65 6352 5224
  • 01
    Aerospace Industry
    Brushed and brushless dc motors by Assun are able to operate on ambient temperature as low as -30°C, and with their long-life span, high efficiency and compact design, the motors are suitable to the applications in aerospace industry.
  • 02
    Automotive Industry
    Electric motors by Assun are efficient, compact and robust. The low costs of the flat brushless DC motors makes them well suited for applications in the automotive industry.
  • 03
    Precision Instruments
    Brushless motors by Assun are integrated with three Hall sensors mounted 120° apart. This configuration gives the motor ability to define the angular position of the rotor. Therefore, a complete revolution is divided into six steps of 60° each which is suitable to the applications of medical subsystem engineering, medical delivery, breast pumps, diagnostic equipment, point of care, biosensors, surgical devices, etc.
  • 04
    Industrial Automation & Robotics
    Microdrives by Assun are designed to master demanding automation applications. They feature high power density, high torque density, fast acceleration, high efficiency and extremely long operating life cycle.
  • 05
    Medical Technology
    Microdrives for pumps, prosthetics, hand-held tools and implantable systems. Assun DC motors are reliable, low-vibration, and sterilizable. They provide all these features yet maintaining high power density and efficiency levels.
  • 06
    Safety Engineering
    The high efficiency of Assun motors reduces the power consumption therefore batteries can last longer. High precision and fast positioning tasks can easily be achieved. The ideal solution for safety engineering application.



DC motors and drive systems by ASSUN motor

Planetary Gearbox

A planetary gearbox refers to a gear system in which two or more ‘planet’ gear rotate around a central ‘sun’ gear. Typically, a planet carrier is driven by the input gear which rotates the planet
gears around a fixed ring gear (a.k.a annulus). This in turn drives the output shaft which then provides the output torque. However, there are other configurations such as a fixed sun gear which
then the ring gear providing the output torque. The main advantages of planetary gearbox are their high power density, high efficiency and compact size.

DC Brushless Motor

Brushless DC electric motor (BLDC motors, BL motors) also known as electronically commutated motors (ECMs, EC motors), or synchronous DC motors, are synchronous motors powered by DC electricity via an inverter or switching power supply which produces an AC electric current to drive each phase of the motor via a closed loop controller. (Because a computer controls the motor instead of mechanical brushes, it’s more precise. The controller also provides pulses of current to the motor windings that controls the speed and torque of the motor. (With the feedback of position sensor, the speed and the torque of the motor can be controlled precisely)

Built for precision, efficiency and reliability, these motors offer the power density needed to deliver top performance in the most compact applications. Available in slotless designs, they provide exceptional acceleration, speed, torque and position control over a long, trouble-free life.

BLDC motors have a number of advantages over the Brush DC Motors. For one, they are more accurate in positioning apps, relying on Hall effect position sensors for commutation. They beat brush motors in the speed/torque tradeoff with their ability to maintain or increase torque at various speeds. Most importantly, there is no power loss across brushes, so, they require less and sometimes no maintenance due to the lack of brushes, making the components significantly more efficient.

Coreless DC Motor

DC Brushed Motor

A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field.

Featuring a permanent magnet, coreless design, our DC brushed motors deliver high efficiency and power density in a small, lightweight package. Built of high-quality materials for optimal performance, these motors offer a low moment of inertia, low friction and a long commutator life. They’re perfect for compact applications requiring high acceleration, torque and efficiency with no cogging. Ideal for Small, Portable and Handheld Devices


A rotary encoder, also called a shaft encoder, is an electro-mechanical device that converts the angular position or motion of a shaft or axle to an analog or digital signal.

There are two main types: absolute and incremental (relative). The output of absolute encoders indicates the current position of the shaft, making them angle transducers. The output of incremental encoders provides information about the motion of the shaft, which is typically further processed elsewhere into information such as speed, distance and position.

Rotary encoders are used in many applications that require precise shaft unlimited rotation—including industrial controls, robotics, special purpose photographic lenses,[1] computer input devices (such as optomechanical mice and trackballs), controlled stress rheometers, and rotating radar platforms.


Coreless Motor & Geared Motor Manufacturer & Supplier

ASSUN Motor is an innovative motor and motion technology and custom engineering services company that manufactures miniature motors and precision motion control technologies for performance-critical applications that save, improve and enhance lives. We continually develop state of the art miniature motor technologies to serve a spectrum of motion control applications to ensure a perfect fit for your individual applications.

  • Powered surgical instruments
  • Powered dental instruments
  • Medical bed
  • surgical microscopes
  • Medication dosage system
  • Sample distribution system
  • Blodd pressure measuring

  • Screwdriver
  • Drills
  • Sanders, Grinders, Polishers, Saws
  • Cordless Spryer

  • Automatic Door
  • Automatic Gate
  • Ticket vending Machine
  • Aerospace industry
  • Seat and display adjustment
  • Distance measurement systems
  • Gasoline and fuel injection pumps

  • Antenna
  • CCTV
  • Aerial view cameras
  • Telescopes
  • Barcode readers

  • Solar panels
  • Automatic door
  • Security door
  • Massage machine
  • Vacuum cleaner robots
  • Windows wipers
  • ATM (Automated Teller Machine)
  • Currency handling
  • Projectors

  • Packing machines
  • Printing equipment
  • Welding systems
  • Lithography systems
  • Erosion machines
  • Small parts gripper
  • Robot vehicle
  • Assembly machines

  • Robot arm
  • Robot for education
  • underwater robot
  • Entertainment robot
  • Service robot
  • Soccer robot
  • Robots for hobby

  • Gambling machine
  • Theater and concert lighting TV cameras
  • Bicycles – High-end model sets
  • Electric skateboard
  • Model airplanes and trains
  • Tattoo machine
  • Design water dispenser


Planetary Gearbox
DC Brushless Motor & Controller
DC Brushed Motor