TDR047 Series High Precision Planetary Gearbox Helical Gear Reducer

Overview

TDR047 Series High Precision Planetary Gearbox Helical Gear Reducer, also known as servo motor planetary gearbox and low backlash planetary gearbox, is a type of high-precision gearbox that is commonly used in industrial automation equipment. It is designed to provide accurate speed control and position feedback in various applications.

High Precision Planetary Gearbox Construction

Sun Gear

The sun gear is located in the center of the planetary gearbox and is typically connected to the input shaft or fixed to the housing as a stationary component.

Planet Gears

The planet gears rotate around the sun gear and are supported and held in their relative positions by the planet carrier. Each planet gear engages with the sun gear and the internal gear when power is input, and they share and distribute the load.

Planet Carrier

The planet carrier is a structure with multiple planet gear shaft holes that carries the planet gears and allows them to rotate relative to the sun gear. The planet carrier can be used as an output component or connected to another shaft to transmit or receive torque.

Ring Gear/Annulus

The internal gear is a large-diameter annular gear fixed inside the gearbox housing, with teeth on both its inner and outer surfaces that engage with the planet gears. In some applications, the internal gear can also be used as an input or output end.

Bearings and Shaft System

The bearings in the high-precision planetary gearbox support the input shaft, output shaft, and planet carrier to ensure stable rotation and smooth operation between each component.

Housing and Seals

The housing is the external frame of the entire gearbox, protecting the internal components from external environmental factors and providing installation interfaces. The seals ensure that the internal lubricating grease does not leak and prevent dust and water from entering the gearbox.

High Precision Planetary Gearbox Working Principle

Torque Transmission

When power is input into the sun gear, the planet gears rotate around the sun gear. Because the planet gears engage with both the sun gear and the internal gear, they rotate about their own axis at the same time as they revolve around the center of the sun gear with the planet carrier. In this way, the torque input to the sun gear is amplified by the planet gears and evenly distributed to the planet carrier at the output end.

Speed Conversion and Torque Amplification

By adjusting the gear ratio of different components, speed conversion and torque amplification can be achieved between the input and output ends. Generally, when the number of planet gears increases or the gear ratio increases, the effect of torque amplification becomes more significant, but the output speed decreases at the same time.

Low Backlash Design

In high-precision applications, in order to ensure accurate position control and minimal mechanical clearance, high-precision planetary gearboxes use preloading technology to reduce or eliminate the clearance between gears, known as "zero/low backlash" design.

Load Distribution and Dynamic Response

An important advantage of the planetary gear mechanism is that it can evenly distribute the load among multiple planet gears, thereby improving the bearing capacity and stability of the entire system and optimizing dynamic response performance.

High Precision Planetary Gearbox Design and Selection Factors

Factors	Explanation
Load and Torque Requirements	The load and torque requirements of the application should be considered when selecting the gearbox to ensure that it can handle the necessary force.
Speed	The required speed range should be considered when designing the gearbox to ensure that it can provide the necessary output speed.
Mounting	The gearbox mounting style should be selected based on the application requirements, such as inline or right angle mounting.
Environmental Factors	The environmental conditions, such as temperature, humidity, and dust, should be taken into account when selecting the gearbox to ensure that it can operate optimally in the given environment.
Cost	The cost of the gearbox should be considered based on the available budget and the required performance specifications.

Applications of High Precision Planetary Gearbox

Servo Motor Systems

High precision planetary gearbox is commonly used in industrial automation equipment, such as robot joint drives, feed mechanisms for precision machine tools, and semiconductor manufacturing equipment, to provide accurate speed control and positioning.

Medical Equipment

High precision planetary gearbox is used in high-end medical equipment, such as CT scanners, MRI machines, and surgical robots, to achieve precise motion control and torque amplification.

Aerospace

High precision planetary gearbox is used in aircraft landing gear retraction systems, flight control system actuators, satellite attitude adjustment devices, and other applications that require reliability and precision.

Precision Instruments

High precision planetary gearbox is used in scientific experimental equipment, precision measuring instruments, and optical tracking systems that have extremely high requirements for transmission accuracy.

Automotive Manufacturing

High precision planetary gearbox is used in electric power steering systems of new energy vehicles, drive units of electric vehicles, and transmission systems of high-performance racing cars.

Robotics

High precision planetary gearbox is used in joint drives of industrial robots, service robots, and special operation robots.

Logistics Automation

High precision planetary gearbox is used in lifting platforms, conveyor belt drives, and AGVs (automated guided vehicles) in automated warehousing systems.

About Us

We are a professional manufacturer of power transmission equipment located in Hangzhou, Zhejiang. We operate strictly in accordance with the international quality management system standard ISO9001:2015, and our products have passed China's mandatory CCC certification and the European Community's CE certification. Our products are produced according to international IC standards and have reached the advanced level of similar products internationally.

Our Advantages

• We have a strong research and development team that can provide customized solutions for customers.
• We have a modern production line and advanced testing equipment to ensure the high quality of our products.
• We provide excellent after-sales service to ensure customer satisfaction.
• We have a competitive price advantage.

Author: Miya