Actuators are the input and output devices that connect electronic, hydraulic or pneumatic control systems to their environment. They convert external forces or conditions, such as temperature ...

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Rotary actuators are responsible for powering the robot’s joints, enabling rotational movement. The most common bearings used in these actuators are crossed roller bearings, four-point contact ...

School of Material Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, P.R. China ...