Harmonic Reducer

The Cup-Type Flat Key Direct Connection Harmonic Reducer is designed for precision motion systems requiring compact structure, high transmission accuracy, and reliable torque output. With an enclosed cup-type flexspline structure and optimized direct connection design, this harmonic reducer provides stable performance for robotic joints, industrial automation equipment, and advanced motion control applications.

By combining precision harmonic transmission technology with efficient mechanical integration, this reducer helps improve positioning accuracy, reduce installation complexity, and achieve smoother robotic movement.

Product Features

Cup-Type Enclosed Flexspline Structure

The reducer adopts a cup-type enclosed cylindrical flexspline design, providing excellent structural rigidity and stable transmission performance.

This enclosed structure offers advantages including:

• Compact mechanical layout

• Improved load distribution

• Enhanced durability

• Stable operation under continuous working conditions

The optimized flexspline design helps maintain precision while supporting demanding robotic applications.

Flat Key Direct Connection Design

The input shaft is connected through a parallel key structure that directly matches the bore of the wave generator. This connection method ensures reliable torque transmission and simplifies mechanical assembly.

The structural configuration includes:

• Circular spline fixed at the end

• Flexspline used as the output component

• Direct connection between input shaft and wave generator

This design improves transmission efficiency while reducing unnecessary mechanical components.

Product Advantages

High-Performance FOC Control Compatibility

The harmonic reducer can be integrated with advanced robotic joint systems featuring full hardware FOC (Field-Oriented Control) technology and chip-level FPGA development.

This enables precise motor control, faster response, and improved energy efficiency in intelligent robotic applications.

Hollow Cabling Capability

The integrated joint architecture supports hollow cable routing, allowing power lines, sensor cables, and communication wiring to pass through the center of the actuator.

Benefits include:

• Simplified robot wiring

• Reduced external cable exposure

• Better space utilization

• Improved system reliability

Fast Triple-Loop Motion Control

The system supports triple-loop control with current, velocity, and position loops operating at 20KHz frequency.

High-speed control processing provides:

• Rapid response performance

• Improved trajectory tracking

• Higher motion stability

• Enhanced robotic coordination

Industrial Communication Support

Compatible with EtherCAT and CANopen communication protocols, the system provides flexible connectivity with different robotic controllers and automation platforms.

This allows easier integration into industrial robotic systems and intelligent manufacturing environments.

High-Accuracy Feedback Processing

The integrated control system supports 16-bit ADC with a 1MHz sampling rate, enabling precise signal acquisition and real-time monitoring.

High-resolution feedback contributes to:

• Improved positioning accuracy

• More stable operation

• Better motion control performance

Safety Power-Off Brake Function

The system features a pin-type brake mechanism that activates mechanical locking immediately after power loss.

With an action time of less than 10ms, the brake system improves operational safety and helps prevent unintended movement during unexpected shutdown conditions.

Core Technology Advantages

The harmonic reducer is developed based on an integrated drive-control joint architecture, combining transmission components, motor systems, sensing units, and control electronics into an optimized motion solution.

Multiple size options, including 11, 14, 17, 20, 25, 32, and 40 series, provide flexible choices for different robotic structures and application requirements.

Its compact design, low energy consumption, and precision transmission capability make it suitable for applications where installation space and motion accuracy are critical.

Precision Harmonic Transmission Performance

The reducer utilizes an optimized dual steel wheel structure integrated with cross-roller bearings and precision steel components.

Through the interaction between two steel wheels and the flexspline, the design effectively reduces deformation stress and improves mechanical stability.

Key performance benefits include:

• Smooth transmission operation

• High mechanical efficiency

• Reduced internal stress

• Excellent positioning accuracy up to 20 arcseconds

The precision structure enables reliable motion control for robots and automation systems requiring repeatable and accurate positioning.

Application Areas

The Cup-Type Flat Key Direct Connection Harmonic Reducer is widely used in:

• Humanoid robot joint systems

• Industrial robotic arms

• Collaborative robots

• Precision automation equipment

• Motion control platforms

• Intelligent manufacturing systems

With compact construction, high transmission precision, and reliable mechanical performance, this harmonic reducer provides an efficient solution for advanced robotic motion applications.