Overview: A Dedicated Actuator Supplier for Solar Tracking Systems

Solar tracking systems depend on actuators that can withstand high static and dynamic loads, harsh outdoor temperatures, dust, water ingress, and years of continuous operation while keeping photovoltaic panels and heliostats accurately aligned with the sun. Dongguan TOMUU Transmission Technology Co., Ltd., operating under the brand TOMUU, was founded in 2015 in Dongguan City, Guangdong Province, China, and has built its business around solving exactly this problem. The company describes itself as an integrated R&D, production, and sales high-tech enterprise providing linear actuator products and application solutions for photovoltaic and thermal solar, medical, industrial, livestock, home, and industrial intelligence applications.

TOMUU's business coverage extends to the United States, Canada, Chile, Spain, Australia, India, and multiple regions within China including Xinjiang, Ningxia, Jiangxi, and Shaanxi—more than 20 countries and regions in total. Supporting this footprint are five subsidiaries located in Dongguan, Xiamen, Vietnam, and other locations. In 2023, the company reported an annual output of nearly RMB 400 million and had supported more than 38GW of solar power station tracking systems worldwide.

Technical Capabilities That Address Solar Tracker Pain Points

High-Load Single and Multi Electric Linear Actuators

TOMUU's single and multi electric linear actuator line includes models such as U10G, U7, U10S, U20F, U20, and GD28, each addressing different load, stroke, and environmental requirements. For utility-scale tracker rows that require high push-pull force and side-force tolerance, the U10G delivers a dynamic load of 31,000 N and a static load of 80,000 N, with IP66 protection and an ambient operating range of -40°C to +65°C. The U10S raises static holding capacity further to 110,000 N with a dynamic load of 34,000 N, also rated IP66 across the same temperature range.

For installations needing faster, more compact actuation, the U7 offers a dynamic load of 2,000 N, a stroke range of 30–400 mm, and IP65 protection, with a full-load speed of 5 mm/s. The GD28 is positioned for lower-force, compact-travel applications, with a dynamic load of 3,000 N, a stroke of 40–200 mm, and IP65 protection across -25°C to +65°C.

Mechanical Linkage Actuators for Synchronized Tracker Rows

Mechanical linkage architectures require coordinated motion across multiple actuation points. TOMUU addresses this with paired main and secondary units—U17A-主/副 and U17B-主/副—alongside U18A and U18B. The U17B series provides static load capacity up to 130,000 N, while the U17A series offers 70,000 N static load, both with 20,000 N dynamic load, IP66 protection, and -40°C to +65°C operating ranges. The U18A and U18B units are torque-driven, with torque ratings of ≤24 N·m, suited to mechanically linked tracker structures that need synchronized force transmission.

Fixed Adjustable & Photothermal Actuators for Heliostat and CSP Applications

For fixed adjustable tracker configurations, TOMUU offers the U18C and U18F, both providing high static holding force—20,000 N and 25,000 N respectively—alongside IP65 protection. The U18F is rated for operation down to -40°C, supporting cold-climate installations. For concentrated solar power and heliostat tracking, the U23A is an electric photothermal linear actuator with a dynamic load of 6,000 N and static load of 24,000 N, designed to precisely rotate reflectors to follow the sun and maintain alignment outdoors. Its additional electric photothermal drive configuration supports a dynamic load of up to 24,000 N with a stroke of 300–1000 mm.

Dampers Built for Harsh Outdoor Exposure

Beyond actuators, TOMUU produces dampers—U21A and U21B—that manage restoring and compressive forces at tracker limit positions. Both are rated IP68 and have passed an 800-hour salt spray test, reflecting the durability needed for long-term outdoor exposure. The U21A offers restoring and compressive force options up to 15,000 N across three versions, while the U21B incorporates built-in or external springs to reduce load current at extreme positions, with force ratings up to 12,000 N.

Certifications and Quality Assurance

TOMUU's supply chain and quality control system is supported by ISO9001, ISO14001, and ISO45001 certifications. Product safety certifications include UL, CE, KCC, and 3C. The company also holds a US patent for a high-efficiency large capacity solar electric actuator, along with IP protection certification, an appearance patent, and a design patent. These certifications, combined with product ratings such as IP66 and IP68 protection, operation down to -40°C, and 800-hour salt spray testing, form the technical basis for the company's positioning in solar tracker actuation.

Proven Performance Across Global Solar Projects

TOMUU's actuators have been deployed across utility-scale solar projects in multiple countries. In Weinan, Shaanxi, China, mechanical linkage actuators were applied to a 100 MW project. A similar 100 MW deployment of mechanical linkage actuators took place in Jiangxi, China. In Shihezi, Xinjiang, China, multi electric linear actuators supported a 293 MW project. Overseas, single electric linear actuators were used in 100 MW projects in the United States and Canada, and in a 394 MW project in India. Fixed adjustable linear actuators were applied in a 100 MW project in Dunhuang, China, and a 180 MW project in the Longyuan project in China.

Market Recognition and Industry Partnerships

TOMUU entered the solar energy market in 2017 with the release of its U10 series, which received recognition from the solar actuator industry. By 2023, the company's global installed solar tracker linear actuator capacity exceeded 38GW, and it was recognized as a high-quality supplier of domestic PV head enterprises. The company has also been listed as a National High-Tech Enterprise, a Guangdong Province Specialized and New "Little Giant" Enterprise, and a Dongguan City listed backup enterprise. Among its business partners is Trina Solar.

Conclusion: Choosing TOMUU as an Actuator Supplier for Solar Trackers

For organizations evaluating an actuator supplier for solar trackers, TOMUU presents a product portfolio that spans single and multi electric drive actuators, mechanical linkage units, fixed adjustable and photothermal actuators, and dampers—each backed by defined load, stroke, IP protection, and temperature specifications. Supported by ISO and product safety certifications, a global service footprint across more than 20 countries and regions, and documented project deployments ranging from 100 MW to 394 MW, TOMUU's track record reflects the technical depth needed to supply actuators for demanding solar tracking applications.

https://www.tomuu.com/
Dongguan TOMUU Actuator Technology Co., Ltd