THM280 Hollow Rotary Actuator Rotating Platform Table With High Precision Planetary Gearbox

Product Overview

THM280 hollow rotary actuator Rotating Platform Table With High Precision Planetary Gearbox, also known as Hollow Rotary Platform and Hollow Rotary Table, is a high-precision positioning device that consists of a Hollow Rotary Actuator and a Planetary Gearbox. It is widely used in robotics, aerospace, medical equipment, military equipment, optical instruments, and industrial automation. The future market trend of this device is bright with a high demand for automation in different industries.

Technical Parameter

Specifications	THM280
Reduction ratio	30/40/50/70/80/100
Rated torque	208/290/330/310/300/260/230Nm
Adapted motor	1000/2000W AC Servo motor
Emergency stop torque	3x rated torque
Rated input speed	4000rpm
Maximum input speed	8000rpm
Return gap	≤1arcmin
Torsional rigidity	25Mn/arcmin
Permissible radial force	6700N
Permissible axial force	3350N
Service life	20000hr （Continuous operation reduces service life by 50%)
Transmission efficiency	97%
Working temperature	-10-+90℃
Protection level	IP65
Lubrication	synthetic lubricating oil and grease
Noise	≤63dB(A)
Moment of inertia	2.57-3.25kg.cm²
Weight	26.8kg

Hollow Rotary Actuator Construction

The Hollow Rotary Actuator is composed of five parts:

1. Cross Roller Bearing;
2. Precision Gear;
3. Input Flange;
4. Input Shaft;
5. Sensing Device.

Each part has its unique function, with the cross roller bearing providing support for the system, the precision gear ensuring high-precision positioning, the input flange and input shaft transporting power, and the sensing device providing feedback for the control system.

Cross Roller Bearing

The cross roller bearing is a type of bearing that provides high rigidity and precision for the rotary table. It can withstand axial and radial loads and is suitable for high-precision applications.

Precision Gear

The precision gear is a set of gears that provide a high reduction ratio and high-precision positioning for the rotary table. It is usually a planetary gear system that can provide a high torque output with a small size.

Input Flange and Input Shaft

The input flange and input shaft provide the power source for the rotary table. They are usually connected to a motor, which can be a servo motor, stepper motor, or DC motor.

Sensing Device

The sensing device is used to provide feedback for the control system. It can be an encoder or magnetostrictive displacement sensor that can detect the rotary angle of the rotary table.

Working Principle

The working principle of the Hollow Rotary Actuator includes four parts:

1. Drive Source;
2. Transmission Mechanism;
3. Hollow Shaft Design;
4. Position Control and Feedback;
5. Application Load.

The drive source provides energy for the system, and the transmission mechanism provides a high reduction ratio and torque output for the rotary table. The hollow shaft design allows for the passage of cables, fluid pipes, or other necessary components through the center of the rotary table. The position control and feedback system ensures accurate positioning of the rotary table, while the application load connects to the output of the system.

Drive Source

The drive source is usually a motor that converts electrical energy into mechanical energy. The motor can be a servo motor, stepper motor, or DC motor.

Transmission Mechanism

The transmission mechanism is usually a planetary gear system that can provide high torque output with a small size.

Hollow Shaft Design

The hollow shaft design is a unique feature of the Hollow Rotary Actuator, which allows for the passage of cables, fluid pipes, or other necessary components through the center of the rotary table.

Position Control and Feedback

The position control and feedback system is used to ensure accurate positioning of the rotary table. It can be an encoder or magnetostrictive displacement sensor that can detect the rotary angle of the rotary table.

Application Load

The application load connects to the output of the system and can be a robot joint, radar antenna, medical device, or other equipment that requires precise rotation.

Design and Selection Considerations

The design and selection of a Hollow Rotary Actuator depend on several factors, including:

Factor	Description
Load Capacity	The maximum load that the rotary table can support.
Torque Capacity	The maximum torque that the rotary table can provide.
Speed Range	The range of rotation speed that the rotary table can provide.
Positioning Accuracy	The minimum positioning accuracy that the rotary table can achieve.
Environmental Conditions	The temperature, humidity, and other environmental conditions that the rotary table will operate in.
Application Requirements	The specific requirements of the application, such as load type, load direction, and mounting method.

Application Areas

The Hollow Rotary Actuator has various application areas, including:

1. Robotics: It is used in robotic arms, joints, and grippers to provide precise rotation and positioning.
2. Aerospace: It is used in satellite tracking systems, missile guidance systems, and aircraft control systems.
3. Medical Equipment: It is used in medical robots, CT scanners, and X-ray machines to provide precise positioning.
4. Military Equipment: It is used in radar systems, weapon systems, and surveillance systems to provide precise rotation and positioning.
5. Optical Instruments: It is used in telescopes, cameras, and laser systems to provide precise rotation and positioning.
6. Industrial Automation: It is used in assembly lines, conveyor systems, and inspection systems to provide precise rotation and positioning.

About Our Company

We are a modern enterprise that specializes in the research, development, design, manufacturing, sales, and service of 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 providing high-quality products and services to our customers and adhere to the principles of honesty, sincerity, stability, and compliance.

Author: Miya