TNR115 Series High Precision Planetary Gearbox Helical Gear Reducer

Overview

TNR115 Series High Precision Planetary Gearbox Helical Gear Reducer, also known as servo motor planetary gearbox and low backlash planetary gearbox, is a type of gearbox that is widely used in industrial automation equipment for precise speed control and position positioning. It is designed to reduce the speed and increase the torque of a motor and used in conjunction with a servo motor or stepper motor. The gearbox is known for its high precision and low backlash, which make it an ideal choice for demanding applications.

High Precision Planetary Gearbox Basic Construction

Sun Gear

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

Planet Gears

The planet gears revolve 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 shares and distributes the load when power is input.

Planet Carrier

The planet carrier is a structure with multiple planet gear shaft 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 element or connected to another shaft to transmit or receive torque.

Ring Gear/Annulus

The ring gear/annulus is a large diameter ring-shaped gear fixed inside the housing and meshing 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 of the components. The shaft system is also critical to the performance of the gearbox.

Housing and Seals

The housing is the external frame of the entire gearbox, which protects the internal components from external influences and provides installation interfaces. Seals ensure that internal lubricants do not leak and prevent dust and water from entering the gearbox.

High Precision Planetary Gearbox Working Principle

Torque Transmission

When power is input to the sun gear, the planet gears revolve 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 through 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 between different components, it is possible to realize speed conversion between the input and output ends and torque amplification. 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 will also decrease.

Low Backlash Design

In high-precision applications, in order to ensure accurate position control and minimum mechanical clearance, high-precision planetary gearboxes adopt preload technology to reduce or eliminate gear clearance, which is known as "zero/low backlash" design.

Load Distribution and Dynamic Response

One important advantage of the planetary gear mechanism is that it can distribute the load evenly 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 Considerations

Factors to Consider	Explanation
Application Requirements	For example, torque, speed, precision, and life expectancy.
Environmental Conditions	For example, temperature, humidity, and corrosive substances.
Mounting and Connection	For example, input and output shafts, flanges, and couplings.
Motor Type and Size	For example, servo motor or stepper motor and their power and torque.
Cost and Availability	For example, initial cost, maintenance cost, and lead time.

High Precision Planetary Gearbox Applications

The High Precision Planetary Gearbox is used in the following industries:

1. 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, and more.
2. Medical Equipment: Used in high-end medical equipment such as CT scanners, MRI machines, surgical robots, and other equipment that requires precise motion control and torque amplification.
3. Aerospace: Used in aircraft landing gear retracting systems, flight control system actuators, satellite attitude adjustment devices, and other applications that require high reliability and precision.
4. Precision Instruments: Used in scientific experimental equipment, precision measuring instruments, optical tracking systems, and other applications that require extremely high transmission accuracy.
5. Automotive Manufacturing: Used in power steering systems for new energy vehicles, drive units for electric vehicles, transmission systems for high-performance racing cars, and other applications.
6. Robotics: Used in robot joint drives for industrial robots, service robots, and special operation robots.
7. Logistics Automation: Used in automated warehouse systems such as lifts, conveyor belt drives, AGVs (Automated Guided Vehicles), and more.

About Our Company

We are a professional manufacturer of transmission equipment that integrates scientific research, production, and sales. Located in Hangzhou, Zhejiang, we strictly operate 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 of the European Union. Our products are produced according to international IC standards and have reached the advanced level of similar international products.

Our Advantages

• We have a professional R&D team and advanced production equipment.
• We strictly control the quality of our products from raw material procurement to finished product delivery.
• We provide customized services according to the specific needs of our customers.
• We offer competitive prices and timely delivery.
• We have a good reputation in the industry and have established long-term cooperation with many domestic and foreign customers.

Author: Miya