TRH042 Series High Precision Planetary Gearbox Right Angle Reducer
TRH042 Series High Precision Planetary Gearbox Right Angle Reducer Overview
The TRH042 Series High Precision Planetary Gearbox Right Angle Reducer, also known as the servo motor planetary gearbox and low backlash planetary gearbox, is a type of gearbox designed for precision motion control applications. It is commonly used to decrease the speed of a motor while increasing the torque output. The TRH042 Series gearbox is highly accurate and reliable, making it ideal for applications that require precise positioning and motion control.

Basic Construction of High Precision Planetary Gearbox
The High Precision Planetary Gearbox is composed of several key components:
- 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: Revolve around the sun gear and are supported and held in place relative to each other by the carrier. Each planet gear meshes with the sun gear and the ring gear.
- Planet Carrier: 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 be used as an output component or connected to another shaft to transmit or receive torque.
- Ring Gear/Annulus: A large diameter ring gear fixed inside the gearbox housing that meshes with the planet gears. In some applications, the ring gear can also act as an input or output terminal.
- Bearings and Shaft System: Bearings in the gearbox support the input and output shafts as well as the planet carrier, ensuring stable rotation and smooth operation between components.
- Housing: A sturdy structure that encloses all internal components, providing stable support for gears, protecting internal components from external impurities, and may contain cooling or lubrication systems.
- Shafts and Keys: Input and output shafts are connected to the sun gear or the planet carrier via keys to transmit power, ensuring precise torque transmission and axial positioning.
- Seals: Seals prevent lubricating oil leakage and contamination from entering the gearbox, ensuring internal cleanliness and good lubrication state.

Working Principle of High Precision Planetary Gearbox
The working principle of the High Precision Planetary Gearbox involves torque transmission, amplification, speed control, and low backlash performance. The gearbox works in the following way:
- When power is transmitted from the input shaft to the sun gear, the sun gear starts to rotate, which causes the planet gears to revolve around the sun gear and rotate on their own axes.
- Due to multiple sets of planet gears, the load is evenly distributed throughout the gearbox, significantly increasing the torque output and achieving torque amplification.
- The speed ratio and transmission ratio between the input and output can be precisely controlled by adjusting the number of teeth on the sun gear, planet gears, and ring gear. This allows for precise speed control and torque transmission.
- The High Precision Planetary Gearbox is designed to reduce or eliminate the backlash between gears. This is accomplished through precision machining, preloading techniques, and component selection, ensuring high motion accuracy and smooth operation.
Design and Selection Considerations for High Precision Planetary Gearbox
| Design and Selection Considerations | Description |
|---|---|
| Application requirements | Understanding the specific application requirements and selecting the appropriate gearbox type and specifications. |
| Torque and speed requirements | Determining the required torque and speed range for the application. |
| Mounting options | Selecting the appropriate mounting option based on the constraints of the application. |
| Environmental factors | Taking into account environmental factors such as temperature, humidity, and exposure to corrosive substances. |
| Backlash requirements | Determining the required level of backlash for the application and selecting a gearbox with appropriate specifications. |
| Budget considerations | Considering the budget constraints for the application and selecting a gearbox that balances performance and cost. |
Applications of High Precision Planetary Gearbox
The High Precision Planetary Gearbox is widely used in various industries for precision motion control applications, including:
- Industrial automation equipment such as robotic joint drives, precision machine feed mechanisms, and semiconductor manufacturing equipment.
- High-end medical equipment such as CT scanners, MRI machines, and surgical robots.
- Aerospace applications such as landing gear systems, flight control actuators, and satellite attitude adjustment devices.
- Scientific research equipment, precision measuring instruments, and optical tracking systems that require high transmission accuracy.
- The automotive industry, including power steering systems for new energy vehicles, drive units for electric vehicles, and transmission systems for high-performance racing cars.
- Robotics, including joint transmissions for industrial robots, service robots, and special operation robots.
- Logistics automation, including lifters, conveyor drives, and automatic guided vehicles (AGVs) in automatic warehousing systems.

Introduction to Our Company
We are a professional manufacturer of power transmission equipment, located in Hangzhou, Zhejiang. Our company runs strictly according to the ISO90012085 international quality management system standard. Our products have passed the China Compulsory Certification (CCC) and the European Union CE certification. Our products are produced according to international IC standards and have reached an advanced level among similar international products.
Our Advantages
- We have a strong R&D team that can provide custom solutions to meet specific application requirements.
- We have strict quality control procedures to ensure that our products are of the highest quality and reliability.
- We have a wide range of products and specifications to meet the needs of various industries and applications.
- Our products have passed international certifications, ensuring that they meet the highest global standards.
- We have a professional and responsive customer service team that can provide timely and effective support to our customers.
- We have a competitive pricing strategy that provides our customers with high-quality products at a reasonable price.
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





