THR085 Hollow Rotary Actuator Rotating Platform Table With High Precision Planetary Gearbox

THR085 hollow rotary actuator Rotating Platform Table With High Precision Planetary Gearbox, also known as Hollow Rotary Platform or Hollow Rotary Table, is a mechanical device used to rotate a load with high precision. The product is widely used in various industries such as robotics, aerospace, medical devices, military equipment, optical instruments, and industrial automation. With the trend of automation and intelligence in the manufacturing industry, the market demand for Hollow Rotary Actuator is expected to grow rapidly in the future.

Technical Parameter

Specifications	THR085
Reduction ratio	10/20/30/50
Rated torque	28Nm
Adapted motor	200/400W AC Servo motor
Emergency stop torque	2.5x rated torque
Rated input speed	1500rpm
Maximum input speed	2500rpm
Return gap	≤1arcmin
Torsional rigidity
Permissible radial force	500N
Permissible axial force	200N
Service life	20000hr （Continuous operation reduces service life by 50%)
Transmission efficiency	95%
Working temperature	-10-+90℃
Protection level	IP65
Lubrication	synthetic lubricating oil and grease
Noise	≤65dB(A)
Moment of inertia	0.065kg.cm²
Weight	2.6kg

Basic Construction of Hollow Rotary Actuator

The basic construction of Hollow Rotary Actuator consists of:

1. Crossed Roller Bearing
2. Precision Gear
3. Input Mounting Flange
4. Input Shaft
5. Sensing Device

Each part of the Hollow Rotary Actuator has a specific function:

Crossed Roller Bearing

The Crossed Roller Bearing is used to support the load and reduce the friction of the rotation.

Precision Gear

The Precision Gear is used to reduce the rotation speed and increase the torque of the actuator. The gear is usually a high-precision planetary gearbox.

Input Mounting Flange

The Input Mounting Flange is used to connect the actuator to a motor or other driving source.

Input Shaft

The Input Shaft transfers the torque from the driving source to the Precision Gear.

Sensing Device

The Sensing Device is used to monitor the rotation angle of the actuator and provide feedback to the control system.

The above design makes the Hollow Rotary Actuator compact and capable of providing high torque output while allowing cables, fluid pipelines, or other necessary components to pass through the hollow shaft without affecting the rotation function of the actuator.

Working Principle of Hollow Rotary Actuator

The working principle of the Hollow Rotary Actuator can be summarized as:

1. Driving Source: A motor, such as a servo motor, stepper motor, or DC motor, provides the power source for the actuator. The motor converts electrical energy into mechanical energy and transmits it to the transmission system through the Input Shaft.
2. Transmission Mechanism: The transmission system usually consists of a set of high-precision gears, such as a planetary gearbox. The power of the motor is transmitted to the sun gear through the Input Shaft, and the sun gear drives a set of planetary gears that rotate around it. These planetary gears rotate and revolve around the internal ring gear, achieving torque amplification and reducing rotation speed. This design allows the Hollow Rotary Actuator to provide high torque output while maintaining a compact structure size.
3. Hollow Shaft Design: The core feature of the actuator is that it has a hollow rotating shaft inside, which allows cables, fluid pipelines, or other necessary components to pass through the shaft center without affecting the rotation function of the actuator. This feature greatly enhances the integration of equipment in limited space.
4. Position Control and Feedback: In order to achieve precise position control, the Hollow Rotary Actuator is equipped with a position sensor, such as an encoder or magnetostrictive displacement sensor, which detects the rotation angle of the actuator in real-time and transmits the data back to the control system, forming a closed-loop feedback mechanism to ensure that the actuator operates accurately according to the set target position.
5. Load Application: The output end of the actuator is connected to the load that needs to be rotated, such as robot joints, radar antennas, medical devices, etc., to enable precise continuous or intermittent rotation operations.

The above working principle provides a clear understanding of the inner workings of the Hollow Rotary Actuator. Its compact design, high torque output, and precise positioning control features make it an ideal choice for many industrial applications.

Design and Selection Considerations of Hollow Rotary Actuator

The design and selection considerations of Hollow Rotary Actuator can be summarized in the following table:

Consideration	Description
Load Capacity	The maximum weight or torque that the actuator can handle.
Rotational Speed	The maximum and minimum rotation speed required by the application.
Positioning Accuracy	The required positioning accuracy for the application.
Environmental Factors	The environmental conditions, such as temperature, humidity, and dust, that the actuator will operate in.
Integration Requirements	The integration requirements of the actuator with other equipment in the application.

Applications of Hollow Rotary Actuator

Hollow Rotary Actuator has a wide range of applications, including:

1. Robotics: Hollow Rotary Actuator is commonly used in robotic applications, such as robot arms, grippers, and joints, to achieve precise and continuous motion control.
2. Aerospace: Hollow Rotary Actuator is used in aerospace applications, such as satellite antennas and solar panels, to achieve precise and efficient rotation control.
3. Medical Devices: Hollow Rotary Actuator is used in medical devices, such as CT scanners and X-ray machines, to achieve precise and stable positioning control.
4. Military Equipment: Hollow Rotary Actuator is used in military equipment, such as radar systems and missile launchers, to achieve precise and reliable operation.
5. Optical Instruments: Hollow Rotary Actuator is used in optical instruments, such as telescope mounts and camera gimbals, to achieve precise and smooth rotation control.
6. Industrial Automation: Hollow Rotary Actuator is used in industrial automation applications, such as assembly lines and packaging machines, to achieve precise and efficient motion control.

The above applications are just a few examples of the wide range of applications for Hollow Rotary Actuator. Its high precision, compact design, and reliable performance make it an essential component in many industries.

About Our Company

We are a modern enterprise specializing in the research and development, design, manufacturing, sales, and service of professional servo electric cylinders, servo press equipment, and other servo stamping equipment. Our company has a professional design team, processing team, assembly team, sales team, and after-sales service team. We focus on the design and manufacture of servo cylinders, servo presses, electric push rods, electric slide tables, multi-degree-of-freedom platforms, and other servo stamping equipment. Our company always adheres to the principles of "integrity, sincerity, stability, and compliance," and devotes itself to designing exquisite products and providing sincere services to customers.

Author: Miya