A hollow rotary actuator is a special type of rotary actuator that features a hollow channel in the center of the actuator, which enables it to provide internal space utilization while maintaining mechanical properties. This design gives hollow rotary actuators significant advantages in applications that require internal space, such as robot joints, automation equipment, and other fields.

The hollow rotary actuator achieves a rotation effect through the meshing of gears on the inner and outer rings. The gears on the inner ring mesh with the gears on the outer ring, and the rotational force is transmitted to the inner or outer ring through the transmission mechanism. This design is not only compact and comprehensive, but also has the characteristics of high repeatability, high rigidity, and high rotational accuracy.

‌1. Providing rotational power: The main function of the hollow rotary actuator is to convert electrical energy or other forms of energy into rotational power to drive the rotational movement of the robot joint. This type of actuator is usually installed at the joints of the robot, corresponding to the robots joint freedom, so that the robots arms, ankles and other parts can rotate flexibly.

‌2. High-precision control: Hollow rotary actuators are usually equipped with sensors and controllers, which can achieve high-precision position control, speed control and torque control. Through these control functions, the actuator can adjust the robots motion state according to the controllers instructions to ensure that the robot can accurately complete various predetermined actions.

‌3. Adapt to complex environments: Hollow rotary actuators have the advantages of high control accuracy, fast response speed, and compact structure under the electrification architecture, and are suitable for various complex working environments. These characteristics make hollow rotary actuators widely used in collaborative robots and bionic robots.

‌4. Feedback operating status: Hollow rotary actuators can feedback their own operating status (such as position, speed, current, etc.) to the controller, helping the system to monitor and adjust the robots motion state in real time, and improve the stability and reliability of the system.

‌1. Industrial automation‌: Hollow rotary actuators are one of the key components for realizing automated production lines. They can accurately transmit rotary motion to various mechanical equipment to ensure the accuracy and efficiency of the production process. For example, in automated production lines, rotary tables, assembly robots and other equipment, hollow rotary actuators provide a stable gas source to ensure equipment operation and improve production efficiency and product quality.

‌2. Robotics technology‌: Hollow rotary actuators play an important role in the field of robotics, helping robots achieve more flexible and precise motion control, thereby improving the work efficiency and precision of robots. For example, in tasks such as high-precision welding and assembly, hollow rotary actuators can enable the robots end effector to perform multi-dimensional motion control and complete complex tasks.

‌3. Medical equipment‌: Hollow rotary actuators are also widely used in medical equipment. For example, in surgical robots, it ensures the precise movement and positioning of surgical instruments and improves the precision and safety of surgery. In addition, hollow rotary actuators are also used in medical imaging diagnosis, surgical operations, etc. to improve the accuracy and success rate of surgery.

‌4. Aerospace‌: In aerospace equipment, hollow rotary actuators can ensure the accurate movement and positioning of various precision components, providing strong guarantees for the smooth progress of aerospace missions.

‌5. Photography‌: Hollow rotary actuators have unique applications in photography, which can help photographers create a series of photos with overlapping depth of field and generate beautiful panoramic images. This is very popular in the tourism industry and interior design. In addition, the entertainment industry such as carousels and roller coasters in amusement parks also use hollow rotary actuators to achieve the rotation function.

‌6. Fiber optic communication‌: Hollow rotary actuators can realize the transmission needs of equipment such as fiber optic couplers and fiber optic rotary couplings, and are widely used in the field of fiber optic communication.