1.Brief Introduction of Hollow Rotary Actuators
‌Hollow rotary actuators are actuators that convert compressed air pressure or hydraulic pressure into rotary motion. They are usually used in robotics, medical equipment, industrial automation and other fields. They have the characteristics of high precision, stability and flexibility, and can achieve multi-dimensional precise motion control, improve production efficiency, reduce costs and improve product quality.

2.Components and functions of hollow rotary actuators
1.Motor: As a power source, the motor provides the torque and speed required for the rotary actuator. Common motor types include DC motors and AC motors, among which DC motors are suitable for scenarios requiring higher precision and low noise.
‌2.Reducer: The reducer is used to adjust the output speed and torque of the motor to meet the working requirements of the actuator. The design and selection of the reducer directly affects the load capacity and accuracy of the actuator.
‌3.Sensor: The sensor is used to monitor the position, speed and load of the actuator in real time to ensure the stability and safety of the system. Common sensors include encoders and torque sensors.
‌4.Controller‌: The controller is responsible for receiving the signal fed back by the sensor and adjusting the output of the motor according to the preset parameters to achieve precise control. Modern controllers usually use advanced control algorithms, such as PID control, to improve the response speed and stability of the system. ‌

3.Functions of hollow rotary actuators ‌
1.High-precision rotation‌: The hollow rotary actuator has high torque output and high-precision positioning capabilities. For example, the positioning accuracy of the KAH series hollow shaft rotary actuator can reach within 30 arc seconds. ‌Multi-axis control‌: In the joints of the manipulator, the hollow rotary actuator provides multi-axis rotation and flexible posture control, enabling the robot to perform complex tasks. ‌
‌2.Flexible posture adjustment‌: By using a hollow rotary platform, the robot can rotate 360 ​​degrees without changing direction, which is very useful for robots that require visual monitoring and data collection. ‌
‌3.Adapt to harsh environments‌: The hollow rotary actuator has a high protection level (such as IP67) and is suitable for harsh working environments. ‌
‌4.Multifunctional application‌: Hollow rotary platforms are widely used in robotics, medical equipment, industrial automation and other fields, which can improve production efficiency, reduce costs and improve product quality‌.

4.Application fields of hollow rotary actuators
‌1.Industrial automation‌: In automated production lines, hollow rotary actuators can accurately transmit rotary motion to various mechanical equipment to ensure the accuracy and efficiency of the production process. It is widely used in material transmission and processing to help achieve efficient production processes‌.
‌2.Robotics‌: In the field of robotics, hollow rotary actuators provide robots with multi-axis rotation and flexible posture control, enabling them to perform complex tasks. For example, in the joints of the manipulator, hollow rotary actuators help robots achieve high-precision motion control and improve work efficiency and accuracy‌.
‌3.Medical equipment‌: In medical equipment, hollow rotary actuators are used in surgical robots and medical imaging diagnostic equipment to ensure the precise movement and positioning of surgical instruments and medical imaging equipment, and improve the accuracy and safety of surgery‌.
‌4.Aerospace‌: In the field of aerospace, hollow rotary actuators are used to ensure the accurate movement and positioning of various precision components, providing guarantees for the smooth progress of aerospace missions.
‌5.Photography‌: In the field of photography, hollow rotary actuators are used to create a series of photos with overlapping depth of field, generating beautiful panoramic images, which are widely used in the tourism, interior design and entertainment industries.
‌6.Manufacturing industry‌: In the manufacturing industry, hollow rotary actuators help robots on the production line avoid collisions with conveyor belts, maintain effective operation, and improve production efficiency.
‌7.CNC machine tools‌: In CNC machine tools, hollow rotary actuators provide guarantees for the precise positioning of tools and ensure the accuracy of mechanical processing.
‌8.Semiconductor manufacturing‌: In semiconductor manufacturing, hollow rotary actuators are used for precision operations such as wafer transfer to ensure the stability and accuracy of the production process.

Source:https://www.storeboard.com/blogs/electronics/functions-and-applications-of-hollow-rotary-actuators/6060496