Our motors are engineered to deliver maximum torque per gram and per cubic centimeter through optimized electrical and mechanical design, and efficient thermal management. That translates to lighter, smaller actuators that maintain high continuous torque without thermal derating. In humanoid robotics and compact automation systems, this means reduced payload weight, higher efficiency, and better dynamic response.

Our frameless motors are engineered with a high Km constant, optimized copper fill, and low winding resistance to minimize I²R (copper) losses. By tightly controlling thermal pathways and ensuring operation within an 85 °C winding temperature envelope, the motors deliver higher continuous torque without overheating. The result: reliable, predictable performance under demanding duty cycles — exactly what humanoid robots require for lifelike motion and long service life.

Our frameless BLDC motors are not one-size-fits-all. We tailor diameters, stack lengths, winding configurations, and interconnect options to precisely match your target torque–speed curve, back EMF profile, and thermal envelope. This ensures the motor isn’t just a component, but a seamless part of your actuator system.

We work side-by-side with your engineering team through co-design, testing, and validation to optimize integration. From inertia matching to thermal management, every parameter is tuned to help you hit performance targets and production timelines with confidence.

Lin Engineering combines U.S.-based manufacturing with the resources of a global, vertically integrated partner. This ensures a stable supply chain, consistent quality, and compliance with the most demanding industry standards. 

From 10 prototype motors to 10 million units in full production, our manufacturing systems are built to scale with your program. In medical devices, laboratory automation, aerospace, and next-generation robotics, we deliver the same commitment: on-time supply, predictable quality, and long-term reliability. 

Speed to market demands rapid iteration and real-time problem solving. With our Northern California prototyping and manufacturing facility, you can move from concept to hardware quickly and validate designs under real-world conditions. 

Our USA-based engineering and applications team partners directly with your developers to refine performance, solve integration challenges, and accelerate the transition from prototype to production — reducing risk while keeping your program on schedule.

For more than 30 years, Lin Engineering has supplied motors at the core of robotic systems worldwide. Our experience spans collaborative robots, laboratory automation, service robotics, and humanoid platforms — applications where safety, compliance, and smooth interaction with humans are critical.

Our designs address the challenges that matter most in robotics: minimal torque ripple for smooth motion, thermal stability for continuous duty, and long-life durability under repetitive cycles. Engineers rely on our motors because they deliver consistent performance in real-world conditions, not just on the spec sheet.