Lightweight and heavy-duty dual engines, two breakthroughs in slotless technology - ECT22035 & ECT30090 series high-torque slotless motors
Opening: A technological revolution about "power and beauty"
Amid the surge of Industry 4.0, the motors have evolved far beyond its traditional role as mere "transmission units" and now serve as the "nerves and muscles" of intelligent machinery. However, cogging noise and insufficient torque in traditional motors remain hidden constraints in precision engineering. The ECT22035 and ECT30090, two high-torque slotless motors, embody a "zero compromise" design philosophy, harmonizing seemingly conflicting attributes: strong as a rock, fast as the wind.Chapter 1 Technical Deconstruction: Two Core Innovations Reshaping the Power Paradigm
Gene 1: Two-pole Design-Unleashing Accessible, Robust Power • Higher Torque Density: By increasing the number of magnetic pole pairs, these motors deliver significantly stronger torque at the same current and magnetic field strength, which is ideal for applications demanding high torque. • Enhanced Low-Speed Control: A higher magnetic field switching frequency improves control resolution, resulting in smoother torque output at low speeds. • Reduced Speed Fluctuation and Vibration: Compared to single-pole designs, the two-pole configuration significantly lowers vibration and noise at equivalent rotational speeds. • Broader High-Efficiency Operating Range: Delivers higher efficiency in the medium to low speed ranges, making it well-suited for servo systems requiring frequent speed adjustments.Gene 2: The "Aesthetic of Contradictions" in Hollow Cup Design – Lightweight Agility Meets Powerful Performance • Light philosophy: Weighing just 73g, the ECT22035 offers ultra-low rotor inertia only 3.98gcm², while still achieving a maximum continuous torque of 19.8mNm. • Heavy Breakthrough: The ECT30090 delivers a maximum continuous torque of 218.7mNm and an impressive stall torque of up to 4759.8mNm, which can effortlessly handle medium and high load demands.
Chapter 2 Scenario Narrative: When Technology Integrates into Reality
• The "Guardians" in Automotive Factories
Challenges: Automotive plants employ servo-driven screwdrivers equipped with hollow cup motors to fully automate the tightening of body screws. The Power Logic of the ECT22035: With its high dynamic responsiveness and 4 times overload capacity, the ECT22035 works in tandem with the driver to monitor torque and speed in real time. Through integration with the control system, it enables precise adjustment of tightening parameters—such as preload force and angle—preventing issues caused by improperly seated screws. This significantly reduces rework and improves the overall yield rate.

• The "Climbers" of the Robotics World
Challenges: Tracked and wheeled-leg robots require motors capable of exceeding 250rpm and delivering torque greater than 2.3Nm, all while withstanding intense vibrations and shocks. ECT30090's Rugged Adaptability: When paired with the PG32M gearbox, the ECT30090 achieves a rated speed of 272rpm and a rated torque of 2.9 Nm—perfectly engineered to meet the demanding conditions of these robotic applications.

Chapter 3 Parameter Game: "Dynamic Password" for Accurate Selection
ECT22035H12 | ECT22035H24 | ECT30090H12 | ECT30090H24 | ||
Nominal voltage | V | 12 | 24 | 12 | 24 |
No load speed | rpm | 12400 | 12900 | 8100 | 10500 |
No load current | mA | 195 | 160 | 990 | 850 |
Nominal speed | rpm | 9500 | 11200 | 7510 | 10000 |
Max. continuous torque | mNm | 19.7 | 19.8 | 186.4 | 218.7 |
Max. continuous current | A | 2.33 | 1.25 | 14.27 | 11.16 |
Stall torque | mNm | 132.5 | 150.6 | 2592.5 | 4759.8 |
Stall current | A | 14.35 | 8.28 | 184.00 | 224.30 |
Max efficiency | % | 82.9 | 82.0 | 85.0 | 91.0 |
Resistance (phase-phase) | Ohm | 0.836 | 2.900 | 0.065 | 0.107 |
Inductance (phase-phase) | mH | 0.047 | 0.170 | 0.007 | 0.019 |
Torque constant | mNm / A | 9.23 | 18.19 | 14.04 | 21.22 |
Speed constant | rpm / V | 1035 | 525 | 680 | 450 |
Speed/torque gradient | rpm / mNm | 94 | 84 | 3 | 2 |
Mechanical time constant | ms | 3.91 | 3.49 | 1.54 | 1.32 |
Rotor inertia | gcm2 | 3.98 | 3.98 | 46.8 | 46.8 |
Chapter 4 User Value: Empowering Hidden Competitive Advantages
1. Space Efficiency: With a compact body length of just 35mm, the ECT22035 frees up valuable design space—ideal for use in space- constrained devices. 2. Expanded Compatibility: A comprehensive, one-stop solution encompassing motors, gearboxes, sensors, transmission mechanisms, and control systems—effectively shortening development cycles and simplifying integration. 3. Service Assurance: Customized modules and dedicated technical support ensure fast, seamless project deployment and long-term reliability.Final Chapter: The future is here, driving without boundaries
The ECT22035 and ECT30090 are not just a collection of cold technical specifications—they are precision-crafted solutions aimed directly at industrial pain points. With a brushless, slotless design, they break through the constraints of traditional technologies. Their Hollow cup structure redefines high performance, while their adaptability unlocks a Pandora's box of application possibilities. From the gentle precision required in medical devices, to the iron strength demanded by heavy-duty machinery, and the graceful agility essential to consumer electronics—MOONS' hollow cup series is shaping a new era of high-efficiency motion through data-driven design and scenario-based integration. Choose MOONS', choose a quiet, powerful leap forward in technological evolution.Discover more about the ECT22035 and ECT30090 series slotless motors and their integrated solution—designed to help you find the perfect fit for your application.
※ Due to subsequent product upgrades, product performance/specifications may be changed without prior notice.