TNR142 Series High Precision Planetary Gearbox Helical Gear Reducer Overview

The TNR142 Series High Precision Planetary Gearbox Helical Gear Reducer is a type of gearbox used to transmit torque and motion between rotating shafts. It is also known as a servo motor planetary gearbox and low backlash planetary gearbox. This gearbox is widely used in the industrial automation field and has a high demand for precise speed control and positioning accuracy. The image below shows a typical TNR142 Series High Precision Planetary Gearbox.

Basic Structure of High Precision Planetary Gearbox

The TNR142 Series High Precision Planetary Gearbox consists of several components, including:

• Sun Gear: located in the center of the planetary gearbox and typically connected to the input shaft or fixed to the housing as a stationary component.
• Planet Gears: rotate around the sun gear and are supported and held in relative position by the planet carrier. Each planet gear meshes with the sun gear and the ring gear.
• Planet Carrier: 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 element or connected to another shaft to transmit or receive torque.
• Ring Gear/Annulus: a large diameter ring-shaped gear fixed inside the gearbox that meshes with the planet gears. In some applications, the ring gear can also be used as an input or output end.
• 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 and provides stable support for the gears, protecting the internal components from external impurities. It may also contain cooling or lubrication systems.
• Shafts and Keys: used to connect the input and output shafts to the sun gear or planet carrier 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 status.

Working Principle of High Precision Planetary Gearbox

The TNR142 Series High Precision Planetary Gearbox works based 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. The planet gears start to rotate and revolve due to the meshing with the sun gear and the ring gear. Due to the combined action of multiple sets of planet gears, the load of the entire system is evenly distributed, which can significantly increase the output torque and achieve torque amplification.
• Speed and Gear Ratio Control: by adjusting the number of teeth on the sun gear, planet gears, and ring gear, the speed relationship and gear ratio between the input and output can be precisely controlled. For example, if there are more planet gears or if the number of teeth on the sun gear and ring gear is large, the gear ratio increases, the output speed decreases, and the torque correspondingly increases.
• Low Backlash: the high precision planetary gearbox is specially designed to reduce or eliminate the clearance between gears, known as "zero/low backlash." This is usually achieved through precision processing, preload technology, 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 high precision planetary gearbox can provide good dynamic performance, including fast response, stable operation, and durability under heavy load.

Design and Selection Considerations of High Precision Planetary Gearbox

The design and selection considerations of the TNR142 Series High Precision Planetary Gearbox include:

Applications of High Precision Planetary Gearbox

The TNR142 Series High Precision Planetary Gearbox is commonly used in the following applications:

• Servo Motor Systems: used in industrial automation equipment for precise speed control and positioning, such as robotic joint drives, precision machine feed mechanisms, and semiconductor manufacturing equipment.
• Medical Equipment: used in high-end medical equipment such as CT scanners, MRI machines, and surgical robots for precise motion control and torque amplification.
• Aerospace: used in aircraft landing gear systems, flight control system actuators, and satellite attitude adjustment devices that require high reliability and precision.
• Precision Instruments: used in scientific experiment equipment, precision measuring instruments, and optical tracking systems that require high transmission precision.
• Automotive Manufacturing: used in power steering systems for new energy vehicles, electric vehicle drive units, and transmission systems for high-performance racing cars.
• Robotics: used in joint drive components of industrial robots, service robots, and special operation robots.
• Logistics Automation: used in automatic warehouse systems such as lifters, conveyor drive units, and AGVs (automatic guided vehicles).

About Our Company

We are a professional manufacturer of transmission equipment located in Hangzhou, Zhejiang. We strictly operate according to international quality management system standards ISO9001:2015 and our products have passed the mandatory CCC certification in China and the CE certification in the European Community. Our products are produced according to international IC standards and have reached the advanced level of similar products in the world. The image below shows our high precision planetary gearbox factory.

Our Advantages

• Advanced production technology and equipment
• Strict quality control system
• Professional R&D team
• Rich industry experience
• Excellent after-sales service
• Competitive pricing

Author: Miya