For decades, conventional iron‑core brushed motors dominated the micro motor market. Today, two technologies are rapidly reshaping the landscape: coreless (hollow-cup) motors and brushless DC (BLDC) motors. What is driving this shift, and what should design engineers prepare for next? At TT MOTOR, we have been closely tracking these trends and investing in production capabilities to help our customers stay ahead.
Why coreless motors are gaining ground?
Traditional motors have an iron core in the rotor, which causes cogging torque and eddy current losses. Coreless motors eliminate the iron core, replacing it with a self‑supporting copper winding. The result:
No cogging – smooth rotation even at very low speeds.
Low inertia – extremely fast start/stop response, ideal for precise positioning (e.g., surgical tools, camera focus).
Higher efficiency – less heat generation, better battery life in portable devices.
Coreless motors are still brushed, so they retain simple 2‑wire control but cost more than standard iron‑core motors. TT MOTOR now offers a full range of coreless motors from 6mm to 60mm diameter, with custom winding options for specific voltage and speed requirements. Expect their adoption to grow in medical, robotics, and high‑end smart home products – segments where we already supply major OEMs.
The unstoppable rise of BLDC.
BLDC motors have been used in drones and fans for years, but falling controller costs are bringing them into lower-cost applications. Benefits:
Long life – no brushes to wear out, 10,000+ hours typical.
Quiet operation – no sparking, less acoustic noise.
High power density – more torque per size.
The main barrier remains the need for an electronic speed controller (ESC). However, integrated driver‑on‑PCB solutions are now available for motors as small as 12mm diameter. At TT MOTOR, we have developed a series of BLDC motors with built‑in Hall sensors and optional driver boards, simplifying integration for our customers. We foresee BLDC becoming the default for any application running more than a few hundred hours.
What’s next – and how TT MOTOR is preparing?
Smarter motors – embedded Hall sensors or encoders for closed‑loop control, even in miniature sizes. We already offer custom encoder mounting for our BLDC series.
Lower voltage, higher current – 5V and 3.3V BLDC motors for USB‑powered and IoT devices. Our engineering team is sampling 5V coreless BLDC designs for portable medical devices.
Modular designs–motors with pre-wired controllers and connectors, reducing customer development time. TT MOTOR provides plug‑and‑play motor + driver kits, with full documentation and support.
Why partner with TT MOTOR on your next project?
As a dedicated micro DC motor factory, we are not just following trends – we are helping to set them. Our production lines for coreless and BLDC motors are REACH&RoHS certified, and we offer low MOQs for prototyping and fast scale‑up for mass production. If you are still designing with conventional brushed motors, now is the time to evaluate the alternatives. Contact our engineering team for samples or a technical consultation.
Post time: Apr-22-2026