DC Motor

We provide a wide range of micro DC motors, from 4mm to over 42mm in size, to suit various customer needs. These compact motors are ideal for devices and systems with limited space.

These small DC motors power small gear motors. We use Brushed DC motors, Coreless DC motors, BLDC motors, and different gearboxes to achieve the required reduction ratios, meeting the needs of industrial, medical, and instrumentation applications.

Our core value is working closely with customers to design motors, create prototypes, and scale to mass production, ensuring high-quality products and cost-effective solutions for their high-value requirements.

Explore Our 5 Kinds of DC Motors

Brushed DC Motor

All Series: RS-280, RS-365, RS-380, RS-385, RS-395, RS-540, RS-545, RS-550, RS-775… Brushed DC motors are among the simplest and most common types of DC motors.

Brushless DC Motor

Long-lifetime brushless DC motors provide more torque per weight and generate less audible noise. They come in diameters ranging from 12mm to 42mm.

Coreless DC Motor

Coreless DC motors are made from lightweight materials, with magnet wire wound around them. Micro coreless motors are high-power, low-noise, low-voltage.

Stepper Motor

Stepper motors provide high torque in a compact design, making them perfect for quick acceleration and response. TSL-Motor produces high-quality stepper motors.

Micro DC Motor

We offer 8 types of more efficient small DC motors, including K10,K20.K30,M10, M20, N10, N20, N30, 030, 050, and 130/180 series low-voltage motors..

Brushed DC Motor

All Series: RS-280, RS-365, RS-380, RS-385, RS-395, RS-540, RS-545, RS-550, RS-775… Brushed DC motors are among the simplest and most common types of DC motors.

How A DC Motor Actually Works

A DC motor is an electrical motor.Electric motors work on the principle that a wire carrying current experiences a force when passing through a magnetic field. This magnetic field is generated in the stationary part of the motor, known as the stator. It exerts force on the wire windings attached to the rotary part, the armature, which is connected to the output shaft.

By reversing the magnetic force based on the rotor position, the rotor armature is alternately pulled in one direction and then pushed in the opposite, creating continuous rotational motion. This process is called commutation.

Brushed Vs Brushless DC Motors

There are two main types of DC motors: brushed and brushless (BLDC) motors. Brushed motors use brushes for commutation, allowing the motor to rotate. Brushless motors, on the other hand, use electronic control to handle commutation, eliminating the need for brushes.

Brushed Motor

In a brushed DC motor, the coil is placed in the rotor, which spins within a magnetic field. As the rotor turns, the commutator switches the direction of the current flowing through the coil. This current reversal causes the rotor to continue spinning, powering the motor.

Brushed DC motors are categorized into two types: permanent magnet and electromagnet motors, based on the type of magnet used for the magnetic field.

Permanent magnet brushed DC motors are further split into slotted, slotless, and coreless motors, based on the design of the rotor.

Brushless Motor

A brushless DC motor eliminates the need for a commutator and brushes by placing permanent magnets on the rotor. The rotor’s rotation is controlled by detecting its magnetic poles and adjusting the current flow through the coils accordingly.

This process requires a drive circuit, as the rotor won’t rotate simply by connecting the motor to power.

Brushless DC motors come in two types: surface permanent magnet (SPM) motors, where magnets are on the rotor’s outer edge, and interior permanent magnet (IPM) motors, where magnets are embedded inside the rotor.

Without brushes or a commutator, brushless DC motors offer benefits such as reduced maintenance, longer lifespan, and quieter operation compared to brushed DC motors.

Brushed and Brushless : Advantages and Disadvantages

Your choice between a brushed and a brushless motor depends on your specific application. Below is a comparison of the key pros and cons of each motor type:

	Brushed motor	Brushless motor
Lifetime	Short (brushes wear out)	Long (no brushes to wear)
Speed and Acceleration	Medium	High
Efficiency	Medium	High
Electrical Noise	Noisy (bush arcing)	Quiet
Acoustic Noise & Torque Ripple	Poor	Medium (trapezoidal) or good (sine)
Cost	Lowest	Medium (added electronics)

The Main DC Motor Technologies

We design and produce motors as individual components or as part of complete mechanisms. For DC motors, we apply four different technologies in both cases:

Iron Core Brushed DC Motors

Iron core brushed DC motors are the most affordable motor technology. This design has been used for over a century, with improvements in materials and manufacturing processes over time.

These motors feature permanent magnets placed on the inside of the casing. The armature, which is made of laminated iron sheets, rotates to generate motion.

While these motors can be built to high standards and last long, their magnet and winding setup limits their performance. For applications requiring higher performance, coreless and brushless motors are preferred.

With mechanical commutation driven by brushes, these motors operate with a simple DC voltage, with positive for forward rotation and negative for reverse.

Iron core motors are ideal for cost-sensitive products that don’t need high performance in compact sizes. They are commonly made in diameters ranging from 8mm to 60mm or more.

We’ve used iron core motors in a wide variety of applications, including consumer products and high-volume medical devices.

Coreless Brushed DC Motors

Coreless brushed DC motors provide better performance compared to iron core motors, though they come at a higher cost.

In this design, the motor features a stationary high-performance toroidal magnet instead of a traditional winding. The motor’s windings are mounted on the shaft and placed in a resin mould, rotating around the magnetic core. This setup improves efficiency by reducing magnetic losses. Additionally, the proximity of the windings to the motor case helps dissipate heat more effectively, allowing for higher power output.

Like iron core motors, coreless motors use mechanical commutation through brushes, enabling them to run on a simple DC voltage. Positive voltage drives the motor forward, and negative reverses the direction.

Coreless motors are ideal for two main applications: motors with a diameter under 10mm, where this design is the only option for adequate performance, and larger motors where high performance is needed and DC voltage is preferred over the more complex signals used by brushless motors.

We commonly use coreless motors in compact, high-performance applications, as well as in lower volume industrial, instrument, and medical device.

Brushless (In-Runner and Out-Runner) DC Motors

Brushless DC motors were once the most expensive option due to the need for specialized controllers that convert DC voltages into complex three-phase signals. However, with the availability of off-the-shelf single IC brushless motor controllers, the cost of these motors has significantly decreased.

In a brushless design, the windings remain stationary, while the magnet rotates. There are two main types of brushless motors:

In-Runner Designs: The magnet sits inside the stationary windings. These motors are ideal for applications requiring higher speeds (typically above 5,000 rpm) and lower torque.
Out-Runner Designs: The magnet rotates outside the stationary windings. These motors are better suited for high-torque, low-speed applications where the rotor typically spins below 5,000 rpm.

A key advantage of brushless motors is the absence of brushes, which eliminates wear and extends the motor’s lifespan. As a result, brushless motors tend to last longer than their brushed counterparts. However, they require special drivers, and certain operating conditions—such as high-load starts—need careful attention during design.

To learn more about our range of brushless motors, click here.

Encoders and Integrated Motion Controllers

Motors are used in products to create motion. In some cases, simple rotation is all that’s needed. However, in other applications, more complex motion is required, and various mechanisms can be added to the motor to achieve this.

Generally, higher voltage drives result in faster motor rotation, while increased torque load demands more current from the motor. Some applications only need basic on/off motion, such as a motor spinning a fan impeller in a hairdryer.

However, many applications require more precise control. For example, a motor may need to run at a specific speed, like when driving a pump. In other cases, the motor must rotate a specific number of times, such as when generating linear motion. By counting the rotations, we can determine how far a linear slide has moved.

For these more complex needs, we add an encoder (a type of advanced counter) to the motor, and, if necessary, an integrated motion controller. This controller can receive commands from the host application, such as moving a syringe plunger back and forth by 10mm.

Common DC Motor Designs

No matter which DC motor technology is used, certain form factors and design features are common across many industries. These shared elements help guide the selection of the best motor solution. Below are some examples to help describe your ideal choice.

Terminals and connector pins

Connecting the motor to the application is essential. We usually use soldered pins, spring pad connectors, and integrated connectors for this purpose.

Leads and connectors

Wires and leads are commonly used to connect motors in applications. We provide various lengths, gauges, and pre-installed connectors.

Frame modifications

Securing motor frames to your application can be achieved in several ways. Custom fastening points and brackets are often utilized.

EMI filters and backpack PCBs

Operating motors generate EMI electrical noise. This can be reduced by installing filters, which can be either PCB-based or wire-based.

Shaft modifications

The motor must connect mechanically to your product. We can create custom shafts and pre-install gears, bushes, and bosses.

Motion controllers

A small PCB attached to the back of a DC motor can convert it into a precision servo at a fraction of the cost of a similar off-the-shelf unit.

Why Choose TSL?

We are here to assist you throughout the entire process, from prototype development to large-scale, cost-efficient mass production.

Founded in 2009, TSL Motors has been at the forefront of micro DC motor design and manufacturing. With ISO 9001, ISO 14001, and ISO 45001 certifications, TSL is committed to delivering high-quality products that meet international standards.

We offer a wide range of motor solutions, including coin vibration motors,ERM vibration motor, coreless DC motors, Stepper DC Motors,LRA vibration motors, BLDC motors ,Brushed DC Motors,Planetary Gear Motors,Spur Gear Motors ,Worm Gear Motor,etc. Our motors are engineered to be cost-effective, reliable, and customizable, catering to various applications across diverse industries.

At TSL, we strive to provide our valued customers with innovative solutions tailored to their specific needs.

Designing motors and mechanisms for a diverse array of industrial, medical, and consumer applications.

Our skilled sales engineers are adept at quickly grasping your unique requirements and offering tailored services. These custom services encompass motor performance parameters such as rated voltage, speed, and current, along with additional features like connectors, wire lengths, rubber boots, plastic/metal capsules, brackets, and spring contacts.

We provide comprehensive support, including detailed drawings and specifications, throughout the entire process from prototype development to mass production.

Our motor manufacturing process is designed to be flexible, enabling us to accommodate both large-scale production and specialized, high-value custom builds to meet diverse customer needs.

We use in-house designed dynamometers to thoroughly test and validate every sample and production batch, ensuring the highest standards of quality and performance.

TSL Motor is an ISO 9001:2015 certified company, committed to ensuring that each motor meets your precise specifications and performance standards. We have developed a comprehensive after-sales support system, offering prompt responses to customer inquiries and addressing any issues or needs that may arise. Our commitment doesn’t end with delivery—we are here to support you every step of the way.

Applications Of DC Motors

Our DC motors are utilized in a wide range of applications and industries. Discover more about the typical uses and examples we’ve worked on.

Measurement instruments

Instruments demand high accuracy and power. Our skilled engineers have developed micro motor and drive solutions for precise measuring devices and lab dispensary equipment.

Partnering with us ensures precision products and control, along with ongoing support from our engineering team.

Security precision

Our motors and mechanisms are commonly used in security devices and applications.

Products in this field must meet rigorous standards to ensure security, reliable protection, and consistent performance.

Industrial Tool

Industrial products and machinery are increasingly complex, requiring more functions in smaller sizes. This calls for higher-performing components with reduced dimensions.

At Precision Microdrives, we design and produce dependable micro DC, Gear, and Vibration Motors, offering a variety of customizations for power, efficiency, and flexibility in your demanding industrial applications.

Precise medical

TSL MOTOR has a strong track record in designing and producing electro-mechanical mechanisms for medical devices.

As the demand for innovative medical devices grows, lower costs will drive widespread adoption, particularly in diagnostic applications that are gaining global focus.

✅Collaborate with Specialists

Our engineering team brings decades of motor technology expertise to every project.

✅Seamless Global Partnership

Communicating with us is a breeze.

We’ll adapt to your time zone, making sure that information and ideas are exchanged promptly.

Right from the start, you can rest assured that your thoughts are fully grasped.

✅Lifelong Technical Alliance

We’re not the type to just give you a solution and then disappear. We’ll be with you every step of the way during the project, and even after it’s done. You can count on us to always have your back.

Get In Touch

Start a discussion with our team today!

DC Motor

Explore Our 5 Kinds of DC Motors

Brushed DC Motor

Brushless DC Motor

Coreless DC Motor

Stepper Motor

Micro DC Motor

Brushed DC Motor

How A DC Motor Actually Works

Brushed Vs Brushless DC Motors

Brushed Motor

Brushless Motor

Brushed and Brushless : Advantages and Disadvantages

The Main DC Motor Technologies

Iron Core Brushed DC Motors

Coreless Brushed DC Motors

Brushless (In-Runner and Out-Runner) DC Motors

Encoders and Integrated Motion Controllers

Common DC Motor Designs

Terminals and connector pins

Leads and connectors

Frame modifications

EMI filters and backpack PCBs

Shaft modifications

Motion controllers

Why Choose TSL?

Applications Of DC Motors

Measurement instruments

Security precision

Industrial Tool

Precise medical

✅Collaborate with Specialists

✅Seamless Global Partnership

✅Lifelong Technical Alliance

Follow Us

Get In Touch