Hollow Cup Precision Breakthrough Pending: Frameless Torque Industrialization Accelerates

As a core component of robots, the motor industry is entering a critical development phase under the dual drive of policy support and the commercialization of humanoid robots. By virtue of its core role in rotary and linear transmission, hollow cup motors and frameless torque motors in control motors have become focal points for technological breakthroughs. Their performance optimization and localization process will directly impact the mass production pace of humanoid robots.

Hollow Cup Motor: Localization Dilemma under Precision Control

The hollow cup motor, with its energy efficiency, control sensitivity, and operational stability, has become the core component of robotic dexterous hands. Its unique design results in a more uniform torque distribution, stable low-speed operation, and reduced vibration and noise at high speeds. It is especially suitable for high-precision action scenarios, such as threading a needle or playing the piano.

However, technological barriers have limited the localization process. The complexity of the coil winding process requires a balance between light-weighting and efficiency, with stringent demands on material precision and process stability during manufacturing. At the same time, the diverse application scenarios downstream require manufacturers to have custom production capabilities, further raising the industry's entry barriers. Currently, overseas companies dominate the global hollow cup motor market, and domestic manufacturers still lag in process accumulation and product consistency.

With the increasing demand for dexterous hands in humanoid robots, the market for hollow cup motors continues to expand. On the policy side, there is support for the localization of core components, offering domestic companies opportunities for technological breakthroughs. However, breaking the overseas technological monopoly in the short term will still take time.

Frameless Torque Motor: Incremental Engine for Humanoid Joint Drive

Due to characteristics such as small size, high power density, and large torque at low speeds, the frameless torque motor has become the preferred solution for driving humanoid robot joints. Its direct integration into the mechanical structure can significantly reduce system complexity, meeting the needs for lightweight and high efficiency. Currently, the fusion of linear and rotary transmission technologies further enhances its adaptability in robotic motion control.

Technical challenges are concentrated in magnetic circuit design and process optimization. Overseas manufacturers, with their first-mover advantage, have accumulated significant expertise in magnetic circuit simulation, material selection, and manufacturing precision, while domestic companies still lag in terms of torque density and reliability of high-end products. Furthermore, the highly customized market demand results in a fragmented market competition landscape, and domestic companies are gradually penetrating the mid-to-low-end market through cost-performance advantages.

The accelerated commercialization of humanoid robots injects new momentum into the industry. Companies like Tesla and Unitree Robotics driving mass production will directly lead to a surge in demand for frameless torque motors. In the future, high performance and multi-scenario adaptation will become the direction of technological iterations, with leading companies poised to seize opportunities through technological upgrades.

The core breakthroughs in the industry still require the coordinated promotion of policy, technology, and market demand. Under the dual goals of localization and commercialization, motor companies need to accelerate technological advancements to respond to the continuous evolution of the global competitive landscape.

Magnet wire, flat magnet wire, magnetic steel, copper wires, and other copper products produced by Jintian Copper are widely used in the motor industry and are highly praised by domestic and international customers. We welcome inquiries at: 0574-83005999.