Introduction to QDY-HS 3 Series Harmonic Reducer:
The QDY-HS 3 series flexible wheel has a hollow, flanged standard cylindrical structure. The wave generator cam has a large-diameter hollow shaft hole in the middle. The reducer is designed with a support bearing inside and has a fully sealed structure. It is easy to install and is very suitable for applications where the wire needs to be threaded through the center of the reducer.
QDY-HS3 Harmonic Reducer Performance Parameter Table
Model/Project | Reduction ratio | Rated torque at 2000 rpm input | Maximum allowable torque during start-up and shutdown | Maximum allowable torque under average load | Instantaneous maximum allowable torque | Maximum permissible input speed (for grease) | Permissible average input speed (grease) | Back gap | Design life |
NM | NM | NM | NM | RPM | RPM | Arc Sec | Hours | ||
14 | 50 | 5.4 | 18 | 6.9 | 35 | 7500 | 3500 | ≤30 | >10000 |
80 | 7.8 | 23 | 11 | 47 | ≤30 | >10000 | |||
100 | 7.8 | 28 | 11 | 54 | ≤30 | >10000 | |||
17 | 50 | 16 | 34 | 26 | 70 | 7000 | 3500 | ≤30 | >10000 |
80 | 22 | 43 | 27 | 87 | ≤30 | >10000 | |||
100 | 24 | 54 | 39 | 110 | ≤30 | >10000 | |||
20 | 50 | 25 | 56 | 34 | 98 | 6000 | 3500 | ≤30 | >10000 |
80 | 34 | 74 | 47 | 127 | ≤30 | >10000 | |||
100 | 40 | 82 | 49 | 147 | ≤30 | >10000 | |||
120 | 40 | 87 | 49 | 147 | ≤30 | >10000 | |||
25 | 50 | 39 | 98 | 55 | 186 | 5500 | 3500 | ≤30 | >10000 |
80 | 63 | 137 | 87 | 355 | ≤30 | >10000 | |||
100 | 67 | 157 | 108 | 284 | ≤30 | >10000 | |||
120 | 67 | 167 | 108 | 304 | ≤30 | >10000 | |||
32 | 50 | 76 | 216 | 108 | 382 | 5000 | 3500 | ≤30 | >10000 |
80 | 118 | 304 | 167 | 568 | ≤30 | >10000 | |||
100 | 137 | 333 | 216 | 647 | ≤30 | >10000 | |||
120 | 137 | 353 | 216 | 686 | ≤30 | >10000 |
Product Introduction:
Harmonic Gear Reducers consist of a fixed internal gear, a flexible gear, and a wave generator that causes radial deformation of the flexible gear. Harmonic Gear Reducers are a new type of transmission structure among gear reducers. They utilize the controllable elastic deformation wave generated by the flexible gear to cause relative tooth misalignment between the teeth of the rigid and flexible gears, thereby transmitting power and motion. This transmission method differs fundamentally from ordinary gear transmission, possessing unique characteristics in meshing theory, set calculations, and structural design. Harmonic gear reducers offer advantages such as high precision and high load-bearing capacity. Compared to ordinary reducers, they use 50% less material, reducing their volume and weight by at least one-third.
Core Features:
Small and lightweight; High transmission precision; Large transmission ratio; Simple and compact structure, easy installation; High load-bearing capacity, capable of transmitting motion to confined spaces; High transmission efficiency, smooth operation.
Product Characteristics:
High dynamic precision and accurate control: Multi-tooth meshing achieves error averaging, resulting in small transmission errors and enabling zero or low backlash meshing. Reverse transmission has no idle stroke, providing outstanding positioning accuracy.
Wide transmission ratio range and strong adaptability: Single-stage transmission ratios can reach 30~320, and double-stage transmission ratios can reach thousands, meeting different speed requirements without complex transmission chains.
High load-bearing capacity and high reliability: The tooth surfaces are in surface contact, resulting in uniform force distribution. The flexible wheel is made of high-strength materials, ensuring high load-bearing capacity.
Compact structure and lightweight design: Composed of only three core components—a rigid wheel, a flexible wheel, and a wave generator—it is small in size and light in weight, facilitating installation in confined spaces.
Smooth transmission and high efficiency: Gradual entry and exit meshing of the gear teeth eliminates impact, resulting in low operating noise and vibration.
Unique functional characteristics and wide applicability: Coaxial design of input and output shafts facilitates easy installation and provides strong transmission stability.
Application Examples
Six-axis/multi-axis industrial robots, CNC rotary tables, laser cutting
At Qiandeyi Transmission Technology (Suzhou) Co., Ltd., we specialize in the research, development, manufacturing, and service of Precision Transmission Components for intelligent automation equipment. Since our establishment in 2013, we have focused on providing reliable motion control solutions for customers in industrial robotics, CNC machining, automated production lines, logistics systems, new energy equipment, and intelligent manufacturing industries.
Our QDY-HS3 Harmonic Gear Reducers are developed for applications that require high precision, compact structure, low backlash, and stable transmission performance. By combining advanced harmonic transmission technology with strict manufacturing processes, the QDY-HS3 series provides accurate motion conversion and reliable torque output for modern automation equipment.
In today's manufacturing environment, machines are becoming more intelligent and precise. The transmission system has a direct influence on equipment accuracy, working efficiency, and service life. For robotic joints, precision positioning systems, and automated equipment, a high-performance harmonic gear reducer is an important component for achieving stable and repeatable movement.
The QDY-HS3 Harmonic Gear Reducers use a special harmonic transmission structure consisting of a wave generator, flex spline, and circular spline. Through controlled elastic deformation, the reducer achieves high reduction ratios, low transmission error, and smooth operation in a compact design.
We provide standard and customized QDY-HS3 Harmonic Gear Reducers according to different application requirements. Our engineering team evaluates reduction ratio, rated torque, installation dimensions, backlash requirements, working environment, and operating conditions to provide suitable transmission solutions.
The QDY-HS3 Harmonic Gear Reducers are precision transmission components designed for industrial equipment that requires accurate motion control and reliable operation. As a high precision harmonic gear reducer, the QDY-HS3 series provides excellent positioning performance while maintaining a compact mechanical structure.
Unlike traditional gear reducers that mainly rely on rigid gear engagement, harmonic gear reducers use flexible deformation technology. This unique structure allows multiple teeth to engage simultaneously, improving transmission accuracy and load distribution.
The main components of the QDY-HS3 Harmonic Gear Reducers include the wave generator, flex spline, and circular spline. Each component plays an important role in achieving precise speed reduction and torque transmission.
The wave generator creates controlled deformation of the flex spline. As the flex spline changes shape, it engages with the circular spline at specific positions. This process converts high-speed input rotation into accurate low-speed output movement.
Because of its special transmission method, the QDY-HS3 Harmonic Gear Reducers can provide high reduction ratios in a small installation space. This makes the product especially suitable for robotic joints, precision automation equipment, and intelligent manufacturing systems.
High Precision Transmission: The harmonic transmission structure reduces motion error and improves positioning accuracy, making it suitable for equipment requiring repeated and precise movement.
Low Backlash: The optimized internal structure minimizes transmission clearance, helping machines achieve more accurate positioning and better response performance.
Compact Design: The QDY-HS3 series provides high reduction performance within a small housing size, saving installation space for automation equipment.
High Torque Density: The multi-tooth engagement structure allows stable torque transmission while maintaining a lightweight design.
Stable Operation: Precision manufacturing and balanced structure help reduce vibration and operating noise during continuous working conditions.
Feature | QDY-HS3 Harmonic Gear Reducers | Application Benefit |
Transmission Accuracy | High precision harmonic transmission structure | Improves equipment positioning accuracy |
Backlash Performance | Low backlash design with precise component matching | Supports repeated motion control |
Structure Design | Compact body with high reduction ratio | Saves installation space |
Torque Output | Stable torque transmission through multiple tooth engagement | Maintains reliable operation under load |
Source: Technical characteristics are based on harmonic transmission principles and Qiandeyi Transmission Technology product development experience.
The working principle of the QDY-HS3 Harmonic Gear Reducers is based on harmonic drive technology. This transmission method uses controlled elastic deformation instead of traditional fixed gear transmission.
When the motor drives the wave generator, the flex spline is continuously deformed into an elliptical shape. This deformation allows the flex spline to engage with the circular spline at different positions.
Through this process, the input speed is reduced while the output torque increases. The movement conversion is smooth and accurate, making the QDY-HS3 series suitable for applications requiring high repeatability.
One important advantage of harmonic transmission is that several teeth share the working load at the same time. This helps reduce stress concentration and improves the durability of internal components.
For industrial robots and precision automation equipment, stable motion is essential. The low backlash characteristics of QDY-HS3 Harmonic Gear Reducers help improve positioning performance and reduce movement errors during repeated operation.
Comparison Item | QDY-HS3 Harmonic Gear Reducers | Traditional Gear Reducers |
Transmission Method | Flexible deformation harmonic transmission | Rigid gear engagement transmission |
Precision Level | High precision motion control | Depends on gear processing accuracy and clearance |
Backlash | Low backlash performance | Usually higher transmission clearance |
Installation Space | Compact structure with high reduction ratio | Usually requires larger mechanical structure |
Main Application | Robotics and precision automation | General Industrial Transmission systems |
Source: Comparison based on general transmission design principles and industrial application requirements.
The performance of a precision harmonic gear reducer depends on many factors, including structural design, manufacturing accuracy, material quality, and assembly control. At Qiandeyi Transmission Technology, we focus on improving every detail of the QDY-HS3 Harmonic Gear Reducers to ensure reliable operation in demanding industrial environments.
With the continuous development of automation technology, equipment manufacturers require transmission components with higher accuracy, smaller size, and stronger reliability. The QDY-HS3 series is designed to meet these requirements by providing precise motion control and stable power transmission.
Accuracy is one of the most important performance requirements for modern automation equipment. In robotic systems, semiconductor equipment, and precision inspection machines, even small positioning errors may influence final product quality.
The QDY-HS3 Harmonic Gear Reducers use optimized harmonic transmission technology to reduce motion deviation and improve repeat positioning performance. This allows machines to achieve smoother movement and more consistent operation during repeated cycles.
Backlash directly affects the accuracy of motion transmission. Excessive clearance inside the reducer may create positioning delays and reduce machine performance.
The QDY-HS3 series adopts precision manufacturing and accurate component matching to achieve low backlash performance. This design helps improve response speed and motion accuracy, especially in applications requiring frequent start-stop operation.
One of the biggest advantages of harmonic gear reducers is the ability to provide a high reduction ratio within a compact structure.
For robotic joints and intelligent automation equipment, installation space is often limited. The QDY-HS3 Harmonic Gear Reducers provide efficient speed reduction and torque amplification without increasing the overall equipment size.
Industrial equipment often works continuously for many hours. Excessive vibration or unstable transmission may affect machine accuracy and shorten component life.
Through optimized internal design and precision assembly, the QDY-HS3 Harmonic Gear Reducers achieve smooth operation with reduced vibration and noise. This helps improve the overall working stability of automated equipment.
A reliable reducer should maintain stable performance during long-term operation. The QDY-HS3 series is manufactured with strict process control to improve durability under high-frequency working conditions.
By controlling machining accuracy, assembly quality, and testing procedures, we help ensure that each harmonic gear reducer can meet the requirements of industrial customers.
Technical Feature | Design Principle | Industrial Benefit |
Low Backlash Structure | Precise matching between internal transmission components | Improves positioning accuracy and repeatability |
High Reduction Ratio | Harmonic deformation transmission technology | Provides strong speed reduction in limited space |
Multiple Tooth Engagement | Distributed transmission force between gears | Improves load capacity and stability |
Compact Housing | Integrated precision mechanical design | Suitable for lightweight automation equipment |
Source: Technical advantages are based on harmonic transmission principles and Qiandeyi Transmission Technology product application experience.
The development of intelligent manufacturing has increased the demand for high precision transmission components. Equipment manufacturers need reducers that can provide accurate movement, stable torque output, and reliable operation under continuous working conditions.
The QDY-HS3 Harmonic Gear Reducers are widely used in industries where motion accuracy and reliability are important. Its compact structure and precise transmission characteristics make it suitable for various automation applications.
Industrial robots require high-performance transmission components because robot joints frequently perform repeated movements at high speed.
The QDY-HS3 Harmonic Gear Reducers provide accurate positioning and stable torque transmission for robot joints, welding robots, assembly robots, and material handling systems.
With low backlash and high repeatability, the reducer helps robots maintain stable movement accuracy during long production cycles.
Collaborative robots require lightweight and compact components because they are designed to work in flexible production environments.
The compact structure of QDY-HS3 Harmonic Gear Reducers makes them suitable for robot joints where installation space is limited but high precision is required.
CNC machines depend on accurate rotary movement to maintain machining quality. The transmission system directly influences positioning accuracy and processing consistency.
The QDY-HS3 series can be applied in rotary positioning systems, precision machining equipment, and automated processing machines that require stable and accurate motion.
Semiconductor production requires extremely accurate movement control because small errors may influence product quality.
The QDY-HS3 Harmonic Gear Reducers provide reliable motion solutions for wafer handling systems, precision inspection equipment, and automated semiconductor production lines.
Battery manufacturing and new energy equipment require stable automation systems with high repeatability and long operating life.
The QDY-HS3 Harmonic Gear Reducers support accurate movement control in battery production equipment, testing systems, and intelligent manufacturing solutions.
Modern automated production lines require transmission components that can operate continuously with high accuracy. Assembly systems, inspection equipment, and smart manufacturing platforms depend on stable motion control to maintain production efficiency.
The QDY-HS3 Harmonic Gear Reducers provide reliable transmission performance for automated equipment by combining precise positioning, compact structure, and stable output torque. They help improve equipment response speed and production consistency.
Precision inspection systems require extremely accurate movement because measurement results can be affected by small positioning errors.
With low backlash and stable transmission characteristics, the QDY-HS3 series supports inspection equipment, laboratory automation systems, and precision testing machines that require reliable motion control.
Application Industry | Typical Equipment | Main Performance Requirement |
Industrial Robotics | Robot arms, welding robots, assembly robots | High accuracy and repeated positioning |
Collaborative Robotics | Lightweight robotic joints and flexible robots | Compact size and smooth movement |
CNC Equipment | Rotary tables and precision machining systems | Stable rotation and accurate control |
Semiconductor Equipment | Wafer handling and inspection systems | Low vibration and high precision |
New Energy Equipment | Battery manufacturing systems | Reliable continuous operation |
Source: Application information is based on Qiandeyi Transmission Technology product experience and industrial automation requirements.
The quality of a harmonic gear reducer depends on every manufacturing detail. From material selection to final inspection, each step influences transmission accuracy, operating stability, and service life.
At Qiandeyi Transmission Technology, we implement complete process control during the production of QDY-HS3 Harmonic Gear Reducers. Our goal is to provide products that can maintain reliable performance in high-frequency and high-precision working environments.
The first step of manufacturing is selecting suitable materials. Raw materials are inspected before entering production to ensure they meet mechanical performance requirements.
Reliable materials improve component strength, wear resistance, and long-term stability, which are important for harmonic gear reducers used in industrial automation equipment.
The wave generator, flex spline, and circular spline are the core components of the harmonic gear reducer. Their manufacturing accuracy directly affects backlash, transmission efficiency, and positioning performance.
We use professional production equipment and precision processing methods to control component accuracy and ensure stable engagement between internal parts.
During assembly, our technicians carefully control component matching, internal clearance, lubrication condition, and installation accuracy.
Proper assembly helps the QDY-HS3 Harmonic Gear Reducers achieve smooth operation, low backlash performance, and reliable torque output.
Before shipment, every QDY-HS3 Harmonic Gear Reducers completes professional testing procedures to confirm product performance.
Transmission accuracy testing
Backlash inspection
Torque performance testing
Operating noise testing
Vibration testing
Load capacity testing
Reliability evaluation
Inspection Item | Purpose | Quality Guarantee |
Transmission Accuracy | Check motion control performance | Ensures precise operation |
Backlash Testing | Measure transmission clearance | Improves positioning repeatability |
Noise and Vibration Testing | Evaluate running stability | Supports smooth operation |
Torque Load Testing | Verify output performance | Ensures reliable working ability |
Source: Quality control information is based on Qiandeyi Transmission Technology manufacturing procedures.
For global customers, stable delivery is an important part of successful cooperation. We provide complete support from product selection, technical communication, production arrangement, quality inspection, and shipment.
The standard production cycle of QDY-HS3 Harmonic Gear Reducers is generally 15–30 days.
Customized products usually require 30–45 days depending on reduction ratio, rated torque, installation dimensions, backlash requirements, accuracy level, application environment, and order quantity.
Service Item | Standard Information |
Standard Product Lead Time | 15–30 days |
Customized Product Lead Time | 30–45 days |
Pre-shipment Inspection | Accuracy, backlash, torque, vibration, noise and reliability testing |
Payment Method | T/T bank transfer, L/C available for large projects |
Transportation | Express, air freight, sea freight, railway transportation |
Source: Production and delivery information is based on Qiandeyi Transmission Technology service process.
We provide flexible payment methods according to different customer requirements. The standard payment method for QDY-HS3 Harmonic Gear Reducers is T/T bank transfer.
For large-volume orders, long-term cooperation projects, or customized industrial solutions, L/C payment terms can be discussed according to customer requirements and project conditions.
Different customers have different delivery requirements. Some projects require fast arrival, while others focus on transportation cost control. We select suitable transportation methods according to destination, order quantity, and delivery schedule.
International Express: Suitable for urgent orders and small quantity shipments that require fast delivery.
Air Freight: Suitable for customers who need shorter transportation time and faster project progress.
Sea Freight: Suitable for large quantity orders requiring economical international transportation.
Railway Transportation: Suitable for selected international routes requiring stable delivery performance.
The QDY-HS3 Harmonic Gear Reducers contain precision mechanical components, so proper packaging is important for protecting product accuracy during transportation.
Each product is packed with shockproof foam, moisture-proof sealed bags, and independent cartons. For bulk orders, export wooden cases or pallet fixing packaging are used to provide additional protection.
These packaging methods help prevent damage caused by vibration, impact, moisture, and handling during long-distance international transportation, ensuring safe delivery to customers worldwide.
Choosing the right harmonic gear reducer supplier requires more than checking product specifications. For automation equipment manufacturers, reliable production capability, engineering support, quality management, and delivery stability are equally important.
Qiandeyi Transmission Technology (Suzhou) Co., Ltd. was established in 2013 and is located in Huaqiao Town, Kunshan City, Jiangsu Province. We integrate research and development, manufacturing, sales, and service to provide complete intelligent drive solutions for global customers.
We specialize in precision transmission products including Planetary Gear Reducers, harmonic gearboxes, Hollow Rotary Platforms, RV gearboxes, Commutators, splitters, Joint modules, and Worm Gear Reducers.
Our products are widely used in industrial robots, CNC machine tools, automated production lines, logistics systems, new energy equipment, and intelligent manufacturing industries. Our customers are located in more than 30 countries and regions.
Precision transmission components require strong technical knowledge and practical manufacturing experience. Our core production team has more than 20 years of industry experience and understands how manufacturing accuracy influences reducer performance.
From product structure optimization to manufacturing process improvement, we continue developing reliable transmission solutions for different industrial applications.
Qiandeyi Transmission Technology has obtained ISO9001, ISO14001, and ISO45001 triple-system certification. These systems support continuous improvement in product quality, environmental management, and production safety.
We implement full-process quality control from raw material inspection, precision machining, component assembly, to final performance testing. Every QDY-HS3 Harmonic Gear Reducers must pass inspection before shipment.
Different applications have different requirements. A suitable reducer needs to match equipment structure, working conditions, and performance targets.
Our engineering team provides customized support based on:
Reduction ratio selection
Rated torque requirements
Installation dimensions
Backlash requirements
Motion accuracy requirements
Operating environment
Continuous working conditions
Company Advantage | Customer Value |
Precision transmission manufacturing capability | Reliable harmonic gearbox solutions for automation equipment |
Professional engineering experience | Technical support and suitable product selection |
Strict quality inspection process | Stable product performance and consistent delivery quality |
Customized development capability | Solutions for different industrial applications |
Source: Company capability information is based on Qiandeyi Transmission Technology manufacturing experience and service system.
QDY-HS3 Harmonic Gear Reducers are precision transmission components designed for applications requiring high accuracy, low backlash, and stable motion control.
The reducer uses a wave generator, flex spline, and circular spline structure to achieve accurate speed reduction and torque transmission through harmonic deformation technology.
The main advantages include high precision, low backlash, compact structure, high reduction ratio, stable torque output, low vibration, and long service life.
These characteristics make the product suitable for robotic joints, precision automation equipment, CNC systems, and intelligent manufacturing applications.
The QDY-HS3 series is widely applied in:
Industrial robots
Collaborative robots
CNC machines
Automated production systems
Semiconductor equipment
New energy manufacturing equipment
Precision inspection equipment
Intelligent manufacturing systems
Selecting a suitable harmonic gear reducer requires considering several important factors, including reduction ratio, rated torque, input speed, output requirements, installation dimensions, backlash level, positioning accuracy, and working environment.
For different applications, the required performance may be different. A robotic joint may focus more on low backlash and positioning accuracy, while an automated production system may require stable operation and long service life.
Our engineering team can evaluate customer equipment requirements and provide suitable QDY-HS3 Harmonic Gear Reducers solutions according to actual operating conditions.
Yes. We provide customized harmonic gear reducer solutions based on different equipment designs and application requirements.
Customization can include reduction ratio, torque capacity, installation structure, output connection design, precision requirements, lubrication conditions, and special working environments.
By understanding the complete application situation, we help customers select transmission products that match their equipment performance requirements.
We control product quality throughout the complete manufacturing process. From raw material inspection and precision machining to assembly and final testing, every production step is carefully managed.
Before shipment, each QDY-HS3 Harmonic Gear Reducers is tested for transmission accuracy, backlash, torque performance, vibration, operating noise, load capacity, and reliability.
This complete inspection process helps ensure stable performance after installation in customer equipment.
The standard production cycle of QDY-HS3 Harmonic Gear Reducers is generally 15–30 days.
Customized products usually require 30–45 days depending on technical specifications, reduction ratio, rated torque, installation dimensions, accuracy requirements, application environment, and order quantity.
We communicate production schedules clearly with customers to support project planning and delivery arrangements.
The standard payment method for QDY-HS3 Harmonic Gear Reducers is T/T bank transfer. For large-volume orders or long-term cooperation projects, L/C payment terms can be discussed according to customer requirements.
Transportation methods include international express, air freight, sea freight, and railway transportation. We select suitable logistics solutions based on delivery time, destination, and order quantity.
Each product is protected with shockproof foam, moisture-proof sealed bags, independent cartons, and export wooden cases or pallet packaging for bulk shipments.
The QDY-HS3 Harmonic Gear Reducers provide a reliable precision transmission solution for industrial automation, robotics, and intelligent manufacturing applications.
With advantages including high precision transmission, low backlash, compact structure, high reduction ratio, stable torque output, and long service life, the QDY-HS3 series helps improve equipment accuracy and operational reliability.
For industries such as industrial robotics, collaborative robots, CNC equipment, semiconductor manufacturing, new energy production, and precision automation, choosing the right harmonic gear reducer can directly influence machine performance and production efficiency.
At Qiandeyi Transmission Technology, we combine professional manufacturing experience, advanced production processes, precision testing equipment, and strict quality control to provide reliable transmission solutions for global customers.
Whether you need standard QDY-HS3 Harmonic Gear Reducers or customized harmonic gearbox solutions, our team can provide technical support, product selection guidance, and stable delivery service for your automation projects.
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