TD110 Series High Precision Planetary Gearbox Helical Gear Reducer
Overview of TD110 Series High Precision Planetary Gearbox Helical Gear Reducer
TD110 Series High Precision Planetary Gearbox Helical Gear Reducer is a type of gearbox that has a high-precision and low backlash design. It is commonly used in industrial automation equipment to achieve accurate speed control and position positioning. The gearbox is also known as a servo motor planetary gearbox and a low backlash planetary gearbox. The following image shows the appearance of the TD110 Series High Precision Planetary Gearbox Helical Gear Reducer:

The Basic Construction of High Precision Planetary Gearbox
The high precision planetary gearbox consists of several components:
- Sun Gear: located in the center of the planetary gearbox and is usually connected to the input shaft or fixed to the housing as a stationary part.
- Planet Gears: rotate around the sun gear, supported and maintain their relative positions by the carrier. Each planet gear meshes with both the sun gear and the ring gear, and they share and distribute the load together when the power is input.
- Planet Carrier: a structure with multiple planet gear shaft holes that supports and allows the planet gears 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: a large-diameter ring gear fixed inside the housing, with teeth on both inner and outer surfaces that mesh with the planet gears. The ring gear can also serve as input or output terminal in some applications.
- Bearings and Shaft System: Support the input shaft, output shaft, and planet carrier to ensure stable rotation and smooth operation between components.
- Housing: a sturdy structure that encloses all internal components and provides stable support for gears, while protecting the interior from external impurities. It may also include cooling or lubrication systems.
- Shafts and Keys: the input and output shafts are connected to the sun gear or planet carrier with keys to transmit power and ensure accurate torque transmission and axial positioning.
- Seals: seals prevent lubricant leakage and contaminants from entering the gearbox, ensuring a clean and well-lubricated internal environment.
The following image shows the basic construction of a high precision planetary gearbox:

The Working Principle of High Precision Planetary Gearbox
The working principle of high precision planetary gearbox involves:
- Torque Transmission and Amplification: when power is transmitted from the input shaft to the sun gear, the sun gear starts to rotate. Since the planet gears mesh with both the sun gear and the ring gear, they begin to revolve and rotate. Due to the combined action of multiple sets of planet gears, the load of the entire system is evenly distributed, thus significantly increasing the output torque and achieving torque amplification.
- Speed and Transmission Ratio Control: by adjusting the gear ratio of the sun gear, planet gears, and ring gear, the speed relationship and transmission ratio between the input and output can be precisely controlled. For example, if there are more planet gears or the number of teeth between the sun gear and the ring gear is large, the transmission ratio increases, the output speed decreases, and the torque correspondingly increases.
- Low Backlash Characteristic: high precision planetary gearbox pays special attention to reducing or eliminating the backlash between gears, that is, "zero/low backlash." This is usually achieved through precision machining, preloading 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 planetary gearbox can provide excellent dynamic performance, including fast response, stable operation, and durability under heavy loads.
The following image shows the design of a high precision planetary gearbox:

The Design and Selection Factors of High Precision Planetary Gearbox
The design and selection factors of high precision planetary gearbox are:
| Design and Selection Factors | Explanation |
|---|---|
| Load characteristics | Determine the required torque and speed range of the gearbox. |
| Life requirements | Determine the expected service life of the gearbox and select appropriate materials and manufacturing processes. |
| Environmental conditions | Determine the operating temperature, humidity, and other environmental conditions, and select appropriate lubrication and sealing methods. |
| Installation space and structure | Determine the available installation space and structural features, and select appropriate gearbox models and mounting methods. |
| Cost considerations | Determine the budget and cost-effectiveness, and select appropriate gearbox models and materials. |
| Service and support | Determine the expected maintenance and repair requirements, and select gearbox models and suppliers that provide reliable service and support. |
The Application Fields of High Precision Planetary Gearbox
The application fields of high precision planetary gearbox are:
- Servo motor systems: 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. to achieve precise motion control and torque amplification.
- Aerospace: used in aircraft landing gear retraction systems, flight control system actuators, satellite attitude adjustment devices, etc. that require high reliability and precision.
- Precision instruments: used in scientific experimental equipment, precision measuring instruments, optical tracking systems, etc. that require high transmission accuracy.
- Automotive manufacturing: 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 work robots.
- Logistics automation: used in automatic storage systems such as lifts, conveyor drives, AGVs (automatic guided vehicles), etc.
About Our Company
We are a professional manufacturer of power transmission equipment, located in Hangzhou, Zhejiang, China. Our products have passed the mandatory CCC certification in China and the CE certification in the European Union. We operate strictly in accordance with the international quality management system standard ISO9001:2015, and our products are produced according to international IC standards and reach the advanced level of similar products internationally.
Our advantages include:
- Advanced technology and equipment
- Strict quality control
- Professional and experienced team
- Competitive price and timely delivery
- Excellent after-sales service
- Continuous innovation and improvement
Author: Miya
Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port




