
Innovative solutions for defence technology
Precision is key
The unique cyclo principle
With proven performance in demanding conditions, FINE CYCLO gearboxes are the trusted choice for defence systems requiring reliability, precision, and robustness. Whether it’s for mobile platforms, guided systems, or advanced robotics, our gearboxes deliver unmatched performance when it matters most.

Innovative Gearbox Solutions for
Land, air and sea defence platforms
Our advanced gearbox technologies are engineered to meet the rigorous demands of modern defence operations across land, air, and sea environments. They are suitable for integration into a wide range of systems, including helicopters, naval vessels, armored vehicles, and advanced ground equipment.
Our precision gearbox solutions provide optimal performance across a wide range of defence applications—from rugged land operations to sophisticated naval and aerospace systems. Trust in our proven technologies to secure mission success.

Innovative Gearbox Solutions for
Land applications
Our Cycloid precision gearboxes set new standards for military applications, including weapon and sensor stations. With high torsional stiffness, mechanical resistance to twisting, and shock-load capacity, they ensure maximum precision and robustness under extreme conditions.
Unmatched Performance for Mission-Critical Operations
Whether precise target tracking or stable sensor positioning is required, Cycloid gearboxes deliver the performance necessary for critical operations. Their design enables reliable and accurate movement control, even under high stress and dynamic demands.
Autonomous Mobile Robots (AMR)
Our Advanced Drive Solutions for AMRs are designed to meet the rigorous demands of military applications. With powerful motors and precision-engineered components, our drive systems ensure exceptional performance, reliability, and adaptability in the most challenging environments.
Built with robust materials, our drive solutions withstand harsh conditions, ensuring consistent and dependable performance. They provide maximum adaptability, allowing AMRs to perform a wide range of tasks in diverse terrains, from urban settings to rugged landscapes.


Weapon Stations
Our precision gears support precise targeting and smooth weapon operation. These gearboxes are designed to operate within an ambient temperature range of -10°C to +40°C and a relative humidity of up to 85% (non-condensing).
They feature a modular input-side connection system, allowing for easy installation on any motor.
This ensures that weapon stations function with the highest accuracy and efficiency. This precision is crucial for effective engagement and neutralization of threats in combat scenarios.


Sensor & Radar Systems
Our Cycloid precision gears also excel in military applications such as sensor systems and laser targeting devices. With their high torsional stiffness, mechanical backlash-free operation, and shock load capacity, they ensure maximum precision and robustness under extreme conditions.
Our precision gears provide the performance required for critical sensor operations. Whether it’s stable sensor positioning, accurate data collection, or precise laser targeting, they ensure that these systems operate reliably and precisely. These gears are specifically designed to meet the most demanding tasks and deliver uncompromising quality.
Innovative Gearbox Solutions for
Air applications
Military Combat Drones
Drones play an increasingly central role in modern defence scenarios, whether for reconnaissance, surveillance, or tactical operations. Precision, reliability, and efficiency are crucial for their success.
The Fine Cyclo® ECY series gears from Sumitomo Drive Technologies are specifically designed for these demanding applications. With their mechanical backlash-free operation, high torsional stiffness, and compact design, they guarantee precise control and maximum stability, even under extreme conditions.
Our Fine Cyclo® ECY gears are the ideal choice to elevate drone technology to the next level, ensuring a secure and efficient future for defence.


360-degree drones are transforming aerial surveillance by providing comprehensive coverage and flexibility. At the heart of these drones are precision-engineered gears that enable smooth, continuous rotation for a seamless panoramic view.
These gears ensure clear, stable images from every angle, even in challenging conditions, making them essential for detailed inspections and effective surveillance. Our gears are perfectly suited for this application, ensuring efficient power transmission, long flight times, and reliability in various conditions.
Innovative Gearbox Solutions for
Maritime applications
Our precision gears are exceptionally robust, making them ideal for extreme conditions like saltwater, humidity, and temperature fluctuations. They withstand high shock and vibration loads, ensuring reliability even during continuous operation. The wear-resistant cycloidal design offers a long service life and reduces maintenance efforts, perfect for demanding maritime operations.
Their compact design allows for easy integration into limited spaces without compromising performance. They ensure high efficiency and precise motion control under maximum load, making them ideal for critical marine systems.
Whether for precise positioning of camera systems, control of RAM launchers, or exact targeting of marine light guns, Sumitomo’s cycloid precision gears offer the perfect combination of precision, durability, and reliability. They set new standards for high-performance maritime drive solutions.
Maritime Sensor & Radar Systems
Just like in land applications, our gears can also be used in various maritime applications such as sensors and motion control. They ensure stable sensor positioning and precise motion control, making them the ideal solution for critical marine systems. Our gears are robust, durable, and minimize maintenance efforts, maximizing the efficiency and reliability of your maritime operations.
