TFR120 Series High Precision Planetary Gearbox Helical Gear Reducer Overview

TFR120 Series High Precision Planetary Gearbox Helical Gear Reducer, also known as Servo Motor Planetary Gearbox and Low Backlash Planetary Gearbox, is a high-precision gearbox used in various industrial automation applications. It is designed to provide both high torque and high accuracy in motion control systems. The TFR120 Series gearbox is characterized by its compact size, high efficiency, low backlash, and high torsional stiffness, making it ideal for precise positioning and motion control applications.

High Precision Planetary Gearbox Construction

The High Precision Planetary Gearbox consists of several key components:

• Sun Gear: located at the center of the gearbox, usually connected to the input shaft or fixed to the housing as a stationary part.
• Planet Gears: rotate around the sun gear and are supported and maintained in their relative positions by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear, and they jointly bear and distribute the load.
• Planet Carrier: a structure with multiple planet gear shaft holes, which supports the planet gears and allows them to rotate relative to the sun gear. The planet carrier can serve as an output component or be connected to another shaft to transmit or receive torque.
• Ring Gear/Annulus: a large-diameter circular gear fixed inside the housing, which meshes with the planet gears. In some applications, the ring gear can also act as the input or output terminal.
• Bearings and Shaft System: used to support the input shaft, output shaft, and planet carrier, ensuring stable rotation and smooth operation between components.
• Housing: a sturdy structure that encloses all internal components, providing stable support for the gears, protecting the internal components from external impurities, and may include cooling or lubrication systems.
• Shafts and Keys: the input and output shafts are connected to the sun gear or planet carrier through keys to transmit power, ensuring accurate torque transmission and axial positioning.
• Seals: used to prevent lubricating oil leakage and contamination from entering the gearbox, ensuring internal cleanliness and good lubrication.

High Precision Planetary Gearbox Working Principle

The High Precision Planetary Gearbox works on the following principles:

• Torque Transmission and Amplification: When power is transmitted from the input shaft to the sun gear, the sun gear starts to rotate, and because the planet gears mesh with both the sun gear and the ring gear, they start to revolve and rotate themselves. Due to the joint action of multiple sets of planet gears, the entire system's load is evenly distributed, which can significantly increase the output torque and achieve torque amplification.
• Speed and Ratio Control: By adjusting the number of teeth on the sun gear, planet gears, and ring gear, the speed ratio and transmission ratio between the input and output can be accurately controlled. For example, if there are more planet gears or the difference between the number of teeth on the sun gear and ring gear is significant, the transmission ratio increases, the output speed decreases, and the torque correspondingly increases.
• Low Backlash Characteristic: High Precision Planetary Gearboxes place particular emphasis on reducing or eliminating the gap between gears, known as "zero/low backlash." This is usually achieved through precision machining, preloading techniques, and component selection to ensure high motion accuracy and smoothness under any load.
• Dynamic Response and Stability: Due to the even load distribution and multiple contact points, the planetary gearbox can provide excellent dynamic performance, including fast response, stable operation, and durability under heavy loads.

High Precision Planetary Gearbox Design and Selection Considerations

The design and selection of High Precision Planetary Gearboxes require consideration of the following factors:

High Precision Planetary Gearbox Applications

The High Precision Planetary Gearbox can be used in various applications, including:

• Servo Motor Systems: used in industrial automation equipment for precise speed control and position positioning, such as robot joint drives, precision machine tool feed mechanisms, semiconductor manufacturing equipment, etc.
• Medical Equipment: used in high-end medical equipment such as CT scanners, MRI machines, surgical robots, etc., to achieve accurate motion control and torque amplification.
• Aerospace: used in aircraft landing gear retraction systems, flight control system actuators, satellite attitude adjustment devices, etc., which require high reliability and precision.
• Precision Instruments: used in scientific experimental equipment, precision measuring instruments, optical tracking systems, etc., which require extremely high transmission accuracy.
• Automotive Manufacturing: used in power steering systems for new energy vehicles, drive units for electric vehicles, and transmission systems for high-performance racing cars, etc.
• Robotics: used in joint drive parts of industrial robots, service robots, and special operation robots.
• Logistics Automation: used in automatic storage systems such as lifters, conveyor drive units, AGVs, etc.

About Our Company

We are a professional manufacturer of power transmission equipment, located in Hangzhou, Zhejiang. We are committed to providing high-quality products for various industries and applications. Our products are manufactured in strict accordance with international quality management system standards, and our products have passed the mandatory CCC certification in China and the CE certification of the European Union.

Our Advantages

• Advanced production technology and equipment to ensure product quality and reliability.
• A professional team of engineers and technical experts to provide customized solutions and technical support for customers.
• Strict quality control procedures and testing measures to ensure that each product meets or exceeds customer requirements.
• A comprehensive sales network and after-sales service system to provide customers with timely and effective support.
• Continuous innovation and improvement of products and services to meet the changing needs of the market and customers.
• A strong sense of social responsibility and commitment to environmental protection and sustainable development.

Author: Miya