TNR220 Series High Precision Planetary Gearbox Helical Gear Reducer Overview

TNR220 Series High Precision Planetary Gearbox Helical Gear Reducer, also known as servo motor planetary gearbox and low backlash planetary gearbox, is a high-precision gear reducer that is widely used in industrial automation, medical equipment, aerospace, precision instruments, robotics technology, and other fields. The TNR220 Series is a reliable and durable gearbox designed to meet the demands of high-precision applications.

High Precision Planetary Gearbox Basic Structure

High precision planetary gearbox is composed of the following main components:

• Sun Gear

  The sun gear is located at the center of the planetary gearbox and is usually connected to the input shaft or fixed on the housing as a stationary part.

• Planet Gears

  The planet gears rotate around the sun gear and are supported and kept in relative position by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear/annulus. When power is input, they jointly bear and distribute the load.

• Planet Carrier

  The planet carrier is a structure with multiple planet gear axle holes. It 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 ring gear/annulus is a large-diameter ring gear fixed inside the housing. It has teeth on both inner and outer surfaces that mesh with the planet gears. In some applications, the ring gear/annulus can also be used as an input or output end.

• Bearings and Shaft System

  The bearings in the high-precision planetary gearbox are used to support the input and output shafts as well as the planet carrier, ensuring stable rotation and smooth operation between components.

• Housing and Seals

  The housing is the external frame of the entire gearbox, which protects the internal components from external environmental influences and provides 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

The working principle of high precision planetary gearbox can be summarized as follows:

1. Torque Transmission

   When power is input to the sun gear, the planet gears rotate around the sun gear. Since the planet gears mesh with both the sun gear and the ring gear/annulus, they not only rotate around their own axis but also 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.

2. Speed Conversion and Torque Amplification

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

3. Low Backlash Design

   In high-precision applications, high-precision planetary gearboxes use preloading technology to reduce or eliminate the clearance between gears, that is, "zero/low backlash" design, to ensure precise position control and minimum mechanical clearance.

4. Load Distribution and Dynamic Response

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

High Precision Planetary Gearbox Design and Selection Considerations

When designing and selecting high precision planetary gearboxes, the following factors should be considered:

High Precision Planetary Gearbox Applications

The high precision planetary gearbox is widely used in the following fields:

• Servo Motor System

  It is used in industrial automation equipment for accurate speed control and position positioning, such as robot joint drives, precision machine tool feed mechanisms, semiconductor manufacturing equipment, etc.

• Medical Equipment

  It is used in high-end medical equipment such as CT scanners, MRI machines, surgical robots, etc., to achieve accurate motion control and torque amplification.

• Aerospace

  It is used in aircraft landing gear systems, flight control system actuators, satellite attitude adjustment devices, etc. requiring high reliability and precision.

• Precision Instruments

  It is used in scientific experimental equipment, precision measuring instruments, optical tracking systems, etc. that require extremely high transmission accuracy.

• Automotive Manufacturing

  It is used in power steering systems for new energy vehicles, drive units for electric vehicles, transmission systems for high-performance racing cars, etc.

• Robotics Technology

  It is used in joint drive parts of industrial robots, service robots, and special operation robots.

• Logistics Automation

  It is used in lifting machines, conveyor belt drives, AGVs, etc. in automatic warehousing systems.

About Us

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

Our advantages include:

• Advanced technology and equipment
• Strict quality control and testing
• Professional R&D team
• Efficient production and delivery
• Excellent after-sales service

Author: Miya