Mosrac Motor :: Precision Motion Control Components

Mosrac Motor Co., Ltd. (Shenzhen Mosrac Motor Co., Ltd.) is a China-based manufacturer specializing in precision motion control components, with a strong focus on robotics and automation applications. The company designs and produces frameless motors, encoders, integrated robot joint modules, and related reducers. It positions itself as a one-stop partner for high-performance, customizable motion solutions, serving industries including robotics (humanoid, collaborative, and industrial), medical devices, semiconductor manufacturing, aerospace, industrial automation, and more. Mosrac emphasizes high torque density, compact design, customization, and cost efficiency as alternatives to higher-priced Western brands.

Mosrac’s core strength lies in frameless direct-drive torque motors, which are ideal for direct integration into robotic joints due to their compact size, high power density, low weight, and precise control. These motors eliminate the need for traditional housings, gearboxes (in direct-drive setups), and allow for smoother, more efficient motion in space-constrained applications.

Key robot-based products include:

• Frameless Inrunner & Outrunner Torque Motors (U-Series): A wide range from U16 to U200 series with stator outer diameters from 16mm to 200mm. They offer rated torques from 0.02 Nm up to 50 Nm, various voltage options (24V–220V), and high speeds (up to 6000 rpm in smaller models). These are heavily marketed for humanoid robots, cobots, exoskeletons, and joint modules.
• Robot Joint Modules: Integrated solutions including Planetary Joint Modules and Harmonic Joint Modules that combine motors, reducers, and encoders for plug-and-play robotic joint performance.
• Encoders: High-precision Inductive Encoders and Magnetic Encoders (S-Series) for accurate position feedback essential to closed-loop robotic control.
• RV Reducers and Housed Direct Drive Motors: Supporting components for higher-torque or protected robotic applications.

Mosrac supports both standard off-the-shelf products and full custom engineering (ODM/OEM), with capabilities in electromagnetic design, material optimization, prototyping, and mass production. The company has expanded manufacturing capacity (new factory mentioned in recent updates) and actively participates in robotics events like the World Robot Conference. It holds ISO 9001:2015, CE, RoHS, and REACH certifications.

Overall, Mosrac targets the growing demand for affordable, high-performance components in the robotics boom, particularly for next-generation humanoid and collaborative robots.