Introduction to QDY-HS 2 Harmonic Reducer

The QDY-HS 2 series flexure features a hollow, flanged standard cylindrical structure, resulting in a compact overall design. The input shaft connects to the inner bore of the wave generator via a cross-slider coupling. It can be used with either a fixed rigid wheel end and a flexure end output, or vice versa.

QDY-HS2 Harmonic Reducer Performance Parameter Table

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 been committed to 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-HS2 Harmonic Gear Reducers are designed for precision motion applications that require high accuracy, low backlash, compact structure, and stable torque transmission. Through advanced harmonic transmission technology and strict manufacturing control, the QDY-HS2 series provides accurate speed reduction and reliable output performance for modern industrial equipment.

In today's automated manufacturing environment, machines are becoming faster, smarter, and more precise. The transmission system directly affects equipment positioning accuracy, production efficiency, and long-term reliability. For robotic joints, precision machinery, and intelligent automation systems, selecting a suitable harmonic gear reducer is essential for maintaining stable operation.

The QDY-HS2 Harmonic Gear Reducers use a harmonic drive structure consisting of a wave generator, flex spline, and circular spline. Through controlled elastic deformation, the reducer achieves high reduction ratios, precise movement control, and smooth torque output within a compact design.

We provide both standard and customized QDY-HS2 Harmonic Gear Reducers according to different application requirements. Our engineering team evaluates reduction ratio, rated torque, installation dimensions, backlash requirements, accuracy level, and working environment to recommend the most suitable transmission solution.

1. QDY-HS2 Harmonic Gear Reducers Product Introduction

The QDY-HS2 Harmonic Gear Reducers are precision transmission components developed for industries that require accurate and stable motion control. As a high precision harmonic gear reducer, the QDY-HS2 series provides excellent positioning performance while maintaining a compact and lightweight structure.

Compared with traditional gear reducers, harmonic gear reducers use flexible deformation transmission technology. This unique design allows multiple teeth to engage simultaneously, improving transmission accuracy and reducing mechanical error during operation.

The main structure of the QDY-HS2 Harmonic Gear Reducers includes three important components: the wave generator, flex spline, and circular spline. These components work together to achieve precise speed reduction and stable torque transmission.

When the motor drives the wave generator, the flex spline produces controlled elastic deformation. This deformation creates accurate engagement between the flex spline and circular spline, converting high-speed input rotation into low-speed and high-torque output movement.

Because the transmission force is distributed across multiple engaging teeth, the QDY-HS2 Harmonic Gear Reducers provide excellent load distribution and stable operation. This makes the product suitable for applications requiring frequent movement, accurate positioning, and continuous operation.

The compact design of the QDY-HS2 series allows engineers to integrate the reducer into equipment with limited installation space. It is widely used in industrial robots, collaborative robots, CNC equipment, semiconductor machines, automation systems, and precision manufacturing equipment.

Main Characteristics of QDY-HS2 Harmonic Gear Reducers

High Precision Transmission: The harmonic drive structure provides accurate motion conversion and helps improve positioning performance in precision equipment.

Low Backlash: The optimized internal structure reduces transmission clearance, supporting repeated positioning and stable movement.

Compact Structure: The QDY-HS2 series achieves high reduction performance in a small housing size, saving installation space.

High Torque Density: Multiple tooth engagement improves load distribution and provides reliable torque output.

Stable Operation: Precision manufacturing and careful assembly help reduce vibration and operating noise during continuous use.

Source: Technical characteristics are based on harmonic transmission principles and Qiandeyi Transmission Technology product development experience.

2. Working Principle and Structural Design of QDY-HS2 Harmonic Gear Reducers

The working principle of QDY-HS2 Harmonic Gear Reducers is based on harmonic drive technology. Unlike conventional reducers that depend on rigid gear pairs, harmonic reducers use controlled elastic deformation to achieve accurate motion transmission.

The wave generator is connected to the input shaft and creates continuous deformation of the flex spline. The flex spline then engages with the circular spline through precise tooth contact, producing a stable reduction effect.

This structure allows the reducer to achieve a large reduction ratio with fewer components. At the same time, the compact design reduces overall equipment size while maintaining high transmission accuracy.

For applications such as robot joints and precision automation equipment, smooth and accurate movement is very important. The QDY-HS2 Harmonic Gear Reducers help machines achieve consistent operation during repeated cycles.

Comparison Between Harmonic Gear Reducer and Traditional Gear Reducer

Source: Comparison based on general transmission design principles and industrial application requirements.

3. Technical Advantages of QDY-HS2 Harmonic Gear Reducers

The performance of a harmonic gear reducer depends on structural design, manufacturing accuracy, material selection, and assembly quality. At Qiandeyi Transmission Technology, we focus on improving each production detail to ensure that the QDY-HS2 Harmonic Gear Reducers provide stable and reliable performance in demanding industrial environments.

With the rapid development of intelligent manufacturing, automation equipment requires transmission components with higher precision, smaller size, and stronger reliability. The QDY-HS2 series is developed to meet these requirements by providing accurate motion control and stable torque transmission.

High Precision Motion Control

Precision movement is essential for modern industrial equipment. In applications such as robotic arms, semiconductor equipment, and automated inspection systems, even small positioning errors may affect product quality and production efficiency.

The QDY-HS2 Harmonic Gear Reducers use advanced harmonic transmission technology to reduce motion error and improve positioning accuracy. This allows equipment to achieve smoother operation and better repeatability during continuous working cycles.

Low Backlash Performance

Backlash is an important factor that influences transmission accuracy. Excessive clearance inside a reducer may cause movement delay and reduce the precision of automated equipment.

The QDY-HS2 series adopts precision machining and accurate component matching to achieve low backlash performance. This design helps improve response speed and maintain stable positioning during frequent start-stop operation.

Compact Structure with High Reduction Ratio

One of the key advantages of harmonic gear reducers is achieving a high reduction ratio in a compact structure. This feature is especially important for modern equipment where installation space is limited.

The QDY-HS2 Harmonic Gear Reducers provide efficient speed reduction and torque amplification without increasing equipment size. This makes them suitable for lightweight robots, compact automation systems, and precision machinery.

Stable Torque Output and Load Capability

Industrial equipment often experiences changing loads, acceleration, and frequent movement. A stable torque output is important for maintaining machine performance.

Through multi-tooth engagement and optimized internal structure, the QDY-HS2 Harmonic Gear Reducers provide reliable torque transmission and improved resistance to operating impact.

Low Noise and Smooth Operation

For precision equipment, excessive vibration and noise may influence machine accuracy and working environment. The QDY-HS2 series is designed with optimized components and precise assembly processes to achieve smooth operation.

Stable operation helps extend service life and reduce maintenance requirements, making the product suitable for long-term industrial applications.

Source: Technical advantages are based on harmonic transmission principles and Qiandeyi Transmission Technology product application experience.

4. Applications of QDY-HS2 Harmonic Gear Reducers in Industrial Fields

As intelligent manufacturing continues to develop, industries require more accurate and reliable motion control components. The QDY-HS2 Harmonic Gear Reducers are designed for applications where precision, stability, and compact design are important.

The product is widely used in industrial robotics, collaborative robots, CNC equipment, semiconductor machines, new energy equipment, automated production systems, and precision inspection equipment.

Industrial Robots and Robotic Arms

Industrial robots require reducers that can provide accurate positioning and stable torque output. Robot joints often perform thousands of repeated movements every day, so the transmission system must maintain reliable performance.

The QDY-HS2 Harmonic Gear Reducers are suitable for robotic joints, welding robots, assembly robots, and material handling robots. Their low backlash and high precision characteristics help robots achieve stable movement accuracy.

Collaborative Robots

Collaborative robots require lightweight and compact components because they are designed for flexible working environments.

The compact structure of QDY-HS2 Harmonic Gear Reducers allows easier integration into robotic joints while maintaining accurate movement control.

CNC Machine Tools and Precision Equipment

CNC machines require stable rotary movement and precise positioning to maintain machining quality. Transmission accuracy directly affects processing results.

The QDY-HS2 series can be applied in rotary tables, precision machining systems, and automated processing equipment that require reliable motion transmission.

Semiconductor Manufacturing Equipment

Semiconductor production requires extremely accurate movement because small errors may affect manufacturing results.

The QDY-HS2 Harmonic Gear Reducers provide stable motion solutions for wafer handling systems, precision inspection equipment, and automated semiconductor production lines.

New Energy Equipment

The development of new energy industries has increased the demand for high precision automation equipment. Battery manufacturing systems, testing equipment, and assembly lines require stable movement control and reliable transmission performance.

The QDY-HS2 Harmonic Gear Reducers provide accurate motion control solutions for new energy production equipment, helping improve equipment stability and production consistency.

Automated Production Lines

Modern automated production lines require transmission components that can operate continuously with high reliability. Assembly robots, inspection machines, and intelligent manufacturing systems depend on precise movement control.

The QDY-HS2 Harmonic Gear Reducers provide smooth movement, accurate positioning, and stable torque output for automated production systems.

Precision Inspection Equipment

Precision inspection equipment requires extremely accurate movement because measurement results can be influenced by small positioning errors.

With low backlash and stable transmission performance, the QDY-HS2 series supports laboratory automation systems, inspection machines, and precision testing equipment.

Source: Application information is based on Qiandeyi Transmission Technology product experience and industrial automation requirements.

5. Manufacturing Process and Quality Control of QDY-HS2 Harmonic Gear Reducers

The performance of a harmonic gear reducer depends on many manufacturing details, including material quality, machining accuracy, assembly precision, and final testing. At Qiandeyi Transmission Technology, we control each step of production to ensure stable and reliable product performance.

For precision transmission components, small differences in component size or assembly accuracy may influence backlash, transmission efficiency, and service life. Therefore, we apply strict quality control from raw materials to finished products.

Raw Material Inspection

The manufacturing process starts with material selection and inspection. Raw materials are checked to ensure they meet mechanical performance and processing requirements before production.

Reliable materials help improve component strength, wear resistance, and long-term operating stability, which are important for QDY-HS2 Harmonic Gear Reducers used in industrial environments.

Precision Component Manufacturing

The wave generator, flex spline, and circular spline are the core components of the harmonic gear reducer. Their processing accuracy directly affects transmission performance.

We focus on machining accuracy and component consistency to ensure smooth engagement between internal parts and maintain stable operation.

Assembly and Adjustment Process

During assembly, our technicians carefully control component matching, internal clearance, lubrication condition, and installation accuracy.

Correct assembly helps the QDY-HS2 Harmonic Gear Reducers achieve low backlash, smooth operation, and reliable torque output during long-term use.

Performance Testing Before Delivery

Before shipment, every QDY-HS2 Harmonic Gear Reducers completes professional inspection procedures to confirm product quality and performance.

• Transmission accuracy testing

• Backlash measurement

• Torque performance testing

• Operating noise inspection

• Vibration testing

• Load capacity verification

• Reliability evaluation

Source: Quality inspection information is based on Qiandeyi Transmission Technology manufacturing procedures.

6. Production Cycle, Delivery Standards, Payment Methods and Packaging

For international industrial customers, product quality and delivery reliability are equally important. We provide complete service from technical communication and product selection to manufacturing, inspection, and shipment.

Production Cycle

The standard production cycle of QDY-HS2 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, precision level, application environment, and order quantity.

Source: Production and delivery information is based on Qiandeyi Transmission Technology service process.

Payment Methods

We provide flexible payment solutions according to different project requirements. The standard payment method for QDY-HS2 Harmonic Gear Reducers is T/T bank transfer.

For large-volume orders, long-term cooperation projects, or customized automation equipment applications, L/C payment terms can be discussed according to customer needs.

During cooperation, we maintain clear communication regarding technical specifications, production progress, inspection results, and shipment arrangements to ensure smooth project execution.

Transportation Solutions

According to different destinations, order quantities, and delivery requirements, we provide multiple international transportation methods for QDY-HS2 Harmonic Gear Reducers.

International Express: Suitable for urgent orders and small quantity shipments requiring fast delivery.

Air Freight: Suitable for customers requiring shorter transportation time and faster project progress.

Sea Freight: Suitable for large quantity orders requiring economical international transportation.

Railway Transportation: Suitable for specific international routes requiring stable delivery performance.

Safe Packaging for International Shipment

QDY-HS2 Harmonic Gear Reducers contain precision mechanical components, so professional packaging is necessary to protect product accuracy and appearance during transportation.

Each reducer is packed with shockproof foam, moisture-proof sealed bags, and independent cartons. For bulk orders, we use export wooden cases or pallet fixing packaging to provide stronger protection.

These packaging methods help prevent damage caused by vibration, impact, moisture, and handling during long-distance transportation, ensuring products arrive safely at the customer's location.

7. Why Choose Qiandeyi Transmission Technology for QDY-HS2 Harmonic Gear Reducers

Selecting a harmonic gear reducer supplier is not only about product specifications. For automation equipment manufacturers, stable quality, technical support, manufacturing experience, and delivery capability are important factors for long-term cooperation.

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 one-stop intelligent drive solutions for customers worldwide.

We focus on precision transmission products including Planetary Gear Reducers, harmonic gear reducers, Hollow Rotary Platforms, RV gearboxes, Commutators, splitters, Joint modules, and Worm Gear Reducers.

Our products are widely used in industrial robots, CNC machines, automated production lines, logistics systems, new energy equipment, semiconductor equipment, and intelligent manufacturing applications.

Professional Manufacturing Experience

Precision harmonic gear reducers require strong manufacturing experience because small differences in processing accuracy can influence backlash, efficiency, and service life.

Our core production team has more than 20 years of industry experience. We understand the requirements of automation equipment manufacturers and continuously improve our manufacturing processes to provide stable transmission solutions.

From product design optimization and component processing to assembly adjustment and final inspection, every step is controlled carefully to ensure consistent product performance.

Strict Quality Management System

Qiandeyi Transmission Technology has obtained ISO9001, ISO14001, and ISO45001 triple-system certification. These management systems support continuous improvement in product quality, environmental management, and production safety.

We apply full-process quality control from raw material inspection, precision machining, component assembly, to final product testing.

Before delivery, every QDY-HS2 Harmonic Gear Reducers must complete professional testing to verify transmission accuracy, backlash performance, torque output, vibration, noise, and reliability.

Customized Transmission Solutions

Different industries have different requirements for motion control systems. A suitable harmonic gear reducer needs to match equipment structure, operating conditions, and performance targets.

Our engineering team provides customized support based on:

• Reduction ratio requirements

• Rated torque requirements

• Installation dimensions

• Backlash requirements

• Positioning accuracy requirements

• Operating environment

• Continuous working conditions

Source: Company capability information is based on Qiandeyi Transmission Technology manufacturing experience and service system.

8. Frequently Asked Questions About QDY-HS2 Harmonic Gear Reducers

Q1: What are QDY-HS2 Harmonic Gear Reducers?

QDY-HS2 Harmonic Gear Reducers are precision transmission components designed for applications requiring high accuracy, low backlash, compact structure, and stable motion control.

The product uses harmonic transmission technology with a wave generator, flex spline, and circular spline structure to achieve accurate speed reduction and torque transmission.

Q2: What are the advantages of QDY-HS2 Harmonic Gear Reducers?

The main advantages include high transmission accuracy, low backlash, high reduction ratio, compact design, stable torque output, low vibration, and long service life.

These features make the QDY-HS2 series suitable for robotic joints, precision automation equipment, CNC systems, and intelligent manufacturing applications.

Q3: How should I select the suitable QDY-HS2 Harmonic Gear Reducers?

Selecting the correct harmonic gear reducer requires considering several important factors, including reduction ratio, rated torque, input speed, output load, installation dimensions, backlash requirements, positioning accuracy, and working environment.

Different applications have different performance requirements. For example, robotic joints usually focus on low backlash, compact size, and high positioning accuracy, while automated production equipment may require stable operation and long continuous working capability.

Our engineering team can analyze the customer's equipment requirements and recommend the most suitable QDY-HS2 Harmonic Gear Reducers according to actual application conditions.

Q4: Can QDY-HS2 Harmonic Gear Reducers be customized?

Yes. We provide customized harmonic gear reducer solutions based on different equipment structures and application requirements.

Customization options include reduction ratio, rated torque, installation structure, output connection design, backlash level, precision requirements, lubrication conditions, and special working environments.

By understanding the complete working conditions of customer equipment, we help customers select transmission products that achieve better performance and longer service life.

Q5: What industries use QDY-HS2 Harmonic Gear Reducers?

The QDY-HS2 Harmonic Gear Reducers are widely used in industries that require accurate and reliable motion transmission, including:

• Industrial robots and robotic arms

• Collaborative robots

• CNC machine tools

• Automated production lines

• Semiconductor manufacturing equipment

• New energy production equipment

• Precision inspection systems

• Intelligent manufacturing equipment

Q6: What is the production cycle of QDY-HS2 Harmonic Gear Reducers?

The standard production cycle of QDY-HS2 Harmonic Gear Reducers is generally 15–30 days.

Customized products usually require 30–45 days depending on reduction ratio, torque requirements, installation dimensions, accuracy requirements, application environment, and order quantity.

We provide clear production schedules and maintain communication during manufacturing to support customers' project planning and delivery arrangements.

Q7: How do you ensure the quality of QDY-HS2 Harmonic Gear Reducers?

We implement complete quality control throughout the manufacturing process. From raw material inspection, precision machining, component assembly, to final testing, every production stage is carefully managed.

Before shipment, each QDY-HS2 Harmonic Gear Reducers is tested for transmission accuracy, backlash, operating noise, vibration, torque performance, load capability, and reliability.

Professional production equipment, precision testing instruments, and experienced technicians help ensure stable product quality and consistent performance.

Q8: What payment and transportation methods are available?

The standard payment method for QDY-HS2 Harmonic Gear Reducers is T/T bank transfer. For large-volume projects or long-term cooperation orders, 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 according to destination, delivery time, and order quantity.

Products are protected with shockproof foam, moisture-proof sealed bags, independent cartons, and export wooden cases or pallet packaging for bulk shipments.

9. Conclusion of QDY-HS2 Harmonic Gear Reducers

The QDY-HS2 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-HS2 series helps improve equipment accuracy and operational reliability.

For applications such as industrial robots, collaborative robots, CNC equipment, semiconductor systems, new energy manufacturing equipment, and precision automation systems, choosing a suitable harmonic gear reducer directly influences machine performance and production efficiency.

At Qiandeyi Transmission Technology, we combine professional manufacturing experience, advanced production processes, precision inspection equipment, and strict quality management to provide reliable transmission solutions for customers worldwide.

Whether customers need standard QDY-HS2 Harmonic Gear Reducers or customized harmonic gearbox solutions, our team provides technical support, product selection assistance, and stable delivery service to support different automation projects.