The crucial role of RV reducers in the robotics field

Release date:

2025-07-11

The RV reducer is a critical core component in the robotics field, playing an indispensable role especially in joint drives of various types of robots, including industrial robots, collaborative robots, and service robots.

The RV reducer is a critical core component in the robotics field, playing an indispensable role especially in joint drives of industrial robots, collaborative robots, service robots, and other types of robotic systems. Its unique structural design and superior performance directly influence the robot’s motion accuracy, payload capacity, operational stability, and service life.

1. Ensuring high precision and excellent repeatability in robot motion

Robots demand extremely high precision in movements for applications such as industrial assembly, precision welding, and material sorting. The RV reducer meets this requirement thanks to the following features:

- Strong structural rigidity: This design features a hybrid transmission system that combines planetary gears with cycloidal pinwheel mechanisms. The gear system boasts a high number of meshing teeth—typically, the cycloidal and pinwheel gears account for more than half of the total tooth count—resulting in low contact stress and minimal deformation during operation. This effectively minimizes positioning errors caused by elastic deformation.

- Minimal backlash: Thanks to precision machining and assembly techniques, backlash can be controlled to within 1 arc minute—or even below 30 arc seconds for select high-precision models—far surpassing other types of gearboxes like harmonic reducers. This ensures seamless transitions between forward and reverse movements, eliminating any "dead travel" and enabling precise position control for the robot.

For example, in automotive welding robots, RV reducers are used in the welding gun’s pose-adjusting joints, ensuring that the positional error of weld points does not exceed 0.1 mm—directly influencing both welding quality and the structural integrity of the vehicle body.

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