TNE155 Series High Precision Planetary Gearbox Helical Gear Reducer

Overview

The TNE155 Series High Precision Planetary Gearbox Helical Gear Reducer is a type of gearbox that is used for high-precision applications. It is also known as a servo motor planetary gearbox or a low backlash planetary gearbox. The TNE155 Series gearbox is designed to provide high precision and low backlash, making it ideal for use in applications where accuracy is critical. With a compact and durable design, this gearbox is suitable for a wide range of applications.

Basic Construction of High Precision Planetary Gearbox

The high precision planetary gearbox consists of the following main components:

Sun Gear

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

Planet Gears

The planet gears rotate around the sun gear and are supported and held in relative position to each other by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear, and when power is applied, they collectively bear and distribute loads.

Planet Carrier

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

Ring Gear/Annulus

The ring gear or annulus is a large-diameter ring gear fixed inside the housing with teeth on both its inner and outer surfaces that mesh with the planet gears. In some applications, the ring gear can also serve as an input or output end.

Bearings and Shaft System

The bearings in the high precision planetary gearbox 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, protecting internal components from external environmental influences and providing installation interfaces. Seals ensure that internal lubricants do not leak while preventing dust and water from entering the gearbox.

Working Principle of High Precision Planetary Gearbox

The working principle of a high precision planetary gearbox includes the following:

Torque Transmission

When power is inputted 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, they rotate about their own axis while revolving around the center of the sun gear with the planet carrier. In this way, the torque inputted to the sun gear is amplified through the planet gears and evenly distributed to the output end on the planet carrier.

Speed Conversion and Torque Amplification

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

Low Backlash Design

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

Load Distribution and Dynamic Response

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

Design and Selection Considerations for High Precision Planetary Gearbox

The following table lists the design and selection considerations for high precision planetary gearbox:

Design and Selection Considerations	Explanation
Accuracy Requirements	The accuracy requirements for the application will affect the selection of the gearbox.
Operating Speed Range	The operating speed range for the application will affect the selection of the gearbox.
Load Requirements	The load requirements for the application will affect the selection of the gearbox.
Environmental Conditions	The environmental conditions under which the gearbox will operate will affect the selection of the gearbox.
Service Life Requirements	The service life requirements for the application will affect the selection of the gearbox.
Installation and Maintenance	The ease of installation and maintenance of the gearbox should be considered when selecting the gearbox.

Application Fields of High Precision Planetary Gearbox

High precision planetary gearbox has a wide range of application fields, including:

Servo Motor System

Used in industrial automation equipment for precise speed control and position positioning, such as robot joint drive, feed mechanism of precision machine tools, semiconductor manufacturing equipment, etc.

Medical Equipment

Used in high-end medical equipment such as CT scanners, MRI machines, surgical robots, etc. for accurate motion control and torque amplification.

Aerospace

Used in aircraft landing gear retractable systems, actuating mechanisms in flight control systems, satellite attitude adjustment devices, etc. that require high reliability and accuracy.

Precision Instruments

Used in scientific experimental equipment, precision measuring instruments, optical tracking systems, etc. that have extremely high requirements for transmission accuracy.

Automotive Manufacturing Industry

Used in power steering systems of new energy vehicles, drive units of electric vehicles, transmission systems of high-performance racing cars, etc.

Robotics

Used in joint drive parts of industrial robots, service robots, and special operations robots.

Logistics Automation

Used in automatic storage systems such as lifting platforms, conveyor drive units, AGV (automatic guided vehicle), etc.

About Us

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

Our Advantages

• Strict quality management system
• Advanced production technology and equipment
• Professional technical team
• High-quality products and services

Author: Miya