​‌‌Structural design and maintenance methods of hollow rotary actuators

1.Definition of hollow rotary actuators
A hollow rotary actuator is a special type of rotary actuator whose core components include motors, reducers, sensors and controllers. Hollow rotary actuators usually have a hollow axis, which enables them to meet specific application requirements while maintaining mechanical properties, such as application scenarios that require cables or pipes to pass through.
Hollow Rotating Platform Gearbox ratio 5:1 10:1 for 42mm NEMA17 Stepper motor
2.Structural design of hollow rotary actuators
1.Basic structure: Hollow rotary actuators usually consist of a base, a rotating platform, a motor and a control system. The base is used to support the entire platform to ensure stability and load-bearing capacity; the rotating platform carries the workpiece or equipment and realizes rotational motion under the drive of the motor; the motor provides rotational power and is the core component; the control system controls the rotation speed and direction to ensure the accuracy and stability of the movement.
‌2.Transmission method: The hollow rotary actuator uses the meshing of gears of the inner and outer rings to achieve the rotation effect. 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 in function, but also has the characteristics of high repeatability, high rigidity and high rotation accuracy.
3.Hollow design: The center of the hollow rotary actuator is designed as a hollow structure, which facilitates the installation of air pipes and wires in the fixture. This design allows the equipment to be ventilated, watered, and powered through the center hole while rotating, meeting the needs of different industries and application fields.

3.Unique advantages of hollow rotary actuators
1.High-precision angle positioning: The hollow rotary actuator adopts advanced encoder technology to provide extremely high angle resolution, usually up to 0.001 degrees or even higher, ensuring accurate positioning in processing, assembly and other links.
2.Stable and reliable rotation performance: Due to the use of high-quality bearings and optimized structural design, the hollow rotary actuator has excellent stability and can maintain smooth operation even under high-speed rotation or heavy-load conditions.
3.Compact design and easy integration: Compared with traditional rotary mechanisms, hollow rotary actuators are smaller and lighter, but their functions are not inferior. Its unique hollow design not only simplifies the layout of the production line, but also provides great convenience for the shuttle of cables, air pipes and other media.
‌4.Multifunctional integration: A hollow rotary actuator can simultaneously realize multiple functions such as rotation, indexing, and positioning, replacing the previous combination of multiple single-function components, reducing the connection links and potential failure points, reducing maintenance costs, and improving overall production efficiency.
‌5.Price advantage: While maintaining high performance, the hollow rotary actuator is more affordable. This is due to the optimized design concept, efficient production process and strict cost control.
‌6.Wide application potential: Hollow rotary actuators can be easily integrated into various automation control systems and are widely used in precision machining, food packaging, 3C product manufacturing and other fields to meet diverse production needs.
Hollow Rotating Platform Gearbox Ratio 10:1/ 18:1 for 80mm 750W AC Servo Motor
4.Maintenance methods of hollow rotary actuators
‌1.Cleaning and maintenance of lubricating oil: Hollow rotary actuators rely on lubricating oil to reduce wear, reduce temperature, protect metal joints, and reduce vibration and noise. The viscosity of the lubricating oil will change with the oil temperature. If the viscosity is too low, the wear of the transmission parts will increase, and if the viscosity is too high, it will cause malfunction. Therefore, it is very important to replace the lubricating oil regularly and ensure its cleanliness.
2.Improve the working environment: The performance and service life of the actuator are closely related to its working environment. The actuator should be used in a humid, dusty, high temperature or strong vibration environment as much as possible to reduce the wear and damage to the actuator.
3.Regular inspection and cleaning: Regularly check whether the various parts of the actuator are firmly connected, loose, worn or damaged. Use a soft cloth and detergent to wipe the housing and parts, but be careful not to let water enter the actuator.
4.Data management and maintenance records: Establish maintenance records and historical files of the actuator, regularly check and maintain, and master its maintenance information at a certain stage, which is very helpful for daily maintenance and fault judgment.
5.Professional training: The professional knowledge and skills of maintenance personnel directly affect the quality of maintenance management work. Therefore, the training of maintenance personnel should be strengthened to ensure that they can perform maintenance and maintenance work correctly.