Core Strengths | Stability First,
Technology as the Foundation
Since its founding in 2000, SunUs has specialized in the design and manufacture of planetary reducers for servo motors. Leveraging over six decades of gear manufacturing expertise and robust engineering expertise, we have established a strong reputation for high-precision transmission technology.
We believe that stability does not mean slowness, but that every detail can withstand the test of long-term operation.
Our experienced technical team personally oversees every aspect of our product, from tooth profile design and grinding to final assembly and testing, emphasizing the "One Tooth, One Integrity" manufacturing philosophy.
Our independently developed modular reducer structure offers high flexibility and compatibility, shortening customer integration time and improving application efficiency.
Precision backlash control down to ≦1 arcmin ensures precise positioning accuracy and high dynamic stability.
Our products are widely used in industries such as machine tools, automation, wind power, aerospace, and logistics equipment, and are exported to over 30 countries worldwide, earning a deep customer trust.
Various sizes and modules of gearboxes compatible with well-known servo motors.
Standard size 414-944 available. 4 options of ex(in)ternal gear and cross roller/ball type of slewing bearings.
Can't find your reducer? New project for customized reducers? Make your tailor-made reducer with SunUs.
SUNUS planetary gear reducers and gear racks are engineered for high-load CNC machines such as gantry mills, grinders, planers, deep-hole drills, machining centers, presses, and heavy-duty lathes. With high torque capacity, ultra-low backlash, and rigid structure, SUNUS solutions ensure positioning accuracy and stable production, offering a reliable transmission core for the metalworking industry.
SUNUS gear reducers are ideal for robotic arms, packaging machines, conveyors, and high-speed automation lines. Designed for fast start-up, low inertia, and precise control, they integrate seamlessly with various servo motors and ball screws, enabling flexible system design and efficient motion in smart factory applications.
SUNUS solutions are well-suited for injection molding machines, printing presses, packaging systems, food processing, and textile machinery. With high rigidity, wear resistance, and low-maintenance design, our gear reducers and racks meet the demanding conditions of continuous industrial production.
SUNUS slewing bearings and high-torque reducers are ideal for wind turbine yaw systems and generator modules. With heat-treated and ground gear surfaces, they offer high load capacity and long service life. Custom diameters from 200mm to 1100mm are available to meet various design requirements in renewable energy systems.
For excavators, cranes, concrete mixers, offshore rigs, and tunnel boring machines, SUNUS heavy-duty gear reducers are built to handle shocks and extreme conditions. Reinforced bearings and sealed housings ensure long-lasting performance, making them the trusted choice in critical engineering machinery.