Small electric motors have long faced a critical challenge in robotics applications. While capable of achieving high rotational speeds, these compact power units typically deliver insufficient torque to directly drive robotic joints or actuators requiring substantial force. SMAC Corporation has now introduced a revolutionary solution: high-torque brushless DC motors (HT motors) that promise to transform robotic design possibilities.

The HT motor represents a significant advancement in electric motor technology, specifically engineered to address the torque deficiencies of conventional brushless motors at low speeds. Unlike traditional designs where torque drops sharply as speed decreases, HT motors maintain a remarkably flat torque-speed curve. This characteristic ensures stable power delivery during frequent speed changes and variable load conditions - essential requirements for robotic applications.

The exceptional torque performance of HT motors stems from two groundbreaking technological innovations:

These specialized permanent magnet arrangements significantly amplify magnetic field strength. Through optimized spatial orientation of individual magnets, Halbach arrays concentrate magnetic flux within targeted motor regions. SMAC's implementation achieves flux densities exceeding 10,000 Gauss - more than double conventional motor capabilities - enabling substantially higher torque generation.

Replacing traditional mechanical winding methods, this patented approach enables coil configurations impossible to achieve with conventional manufacturing. The printed coil technique offers three key advantages:

• Unprecedented design flexibility for performance optimization
• Dramatic reduction in prototype development costs
• Tooling expenses reduced to fractions of conventional methods

• Proprietary Halbach magnetic circuit designs maximizing torque density
• Patented printed coil technology enabling customized winding geometries
• Significantly shortened development cycles for new motor variants

• Robotics: Joint actuation, end-effectors, and mobile platforms
• Industrial Automation: Robotic arms, precision positioning systems
• Medical Technology: Surgical robots, rehabilitation equipment
• Aerospace: UAV mechanisms, satellite components
• Power Tools: High-torque drills, saws, and wrenches

SMAC's inaugural HT035 series demonstrates the practical implementation of these technologies, delivering exceptional torque in remarkably compact packages. The company plans to expand its HT motor portfolio to address diverse application requirements across multiple industries.

High-torque brushless DC motors represent a paradigm shift in electromechanical actuation. By overcoming traditional torque limitations through innovative magnetic and winding technologies, these advanced motors are poised to enable new generations of robotic and automation systems. As the technology continues to evolve, its impact across industrial and commercial sectors appears increasingly transformative.