Product Description

CHS mini series micro harmonic drive uses ultra-fine ADI material and S-tooth design for self-lubrication, low temperature rise, and long life. Special flexspline process ensures uniform tooth contact. Toughness protection provides overload resistance. Ideal for miniature robotics and precision medical devices.
Product parameters
Model | Ratio | Rated torque at an input speed of 2000 r/min (N.m) | Start-stop peak Torque (N.m) | Max. allowable torque at average load (N.m) | Instantaneous maximum allowable torque (N.m) | Maximum permissible input speed (rpm) | Permissible average speed (rpm) | Moment of inertia (I x 10^-4 kgm^2) | Backlash (Arcsec ) |
CHS mini-2.5 | 30 | 0.06 | 0.13 | 0.10 | 0.21 | 7000 | 3500 | / | ≤20 |
50 | 0.10 | 0.21 | 0.13 | 0.40 | 7000 | 3500 | / | ≤20 | |
CHS mini-03 | 30 | 0.06 | 0.13 | 0.10 | 0.22 | 10000 | 6500 | 5.3x10^-7 | ≤20 |
50 | 0.11 | 0.21 | 0.13 | 0.41 | 10000 | 6500 | 5.3x10^-7 | ≤20 | |
CHS mini-05 | 30 | 0.25 | 0.5 | 0.38 | 0.9 | 10000 | 6500 | 2.5x10^-4 | ≤20 |
50 | 0.4 | 0.9 | 0.53 | 1.8 | 10000 | 6500 | 2.5x10^-4 | ≤20 | |
80 | 0.52 | 1.35 | 0.84 | 2.5 | 10000 | 6500 | 2.5x10^-4 | ≤20 | |
CHS mini-08 | 30 | 0.9 | 1.8 | 1.4 | 3.3 | 8500 | 3500 | 3.2x10^-3 | ≤20 |
50 | 1.8 | 3.3 | 2.3 | 6.6 | 8500 | 3500 | 3.2x10^-3 | ≤20 | |
100 | 2.4 | 4.8 | 3.3 | 9 | 8500 | 3500 | 3.2x10^-3 | ≤20 | |
CHS mini-11 | 30 | 2.2 | 4.5 | 3.4 | 8.5 | 8500 | 3500 | 1.4x10^-2 | ≤20 |
50 | 3.5 | 8.3 | 5.5 | 17 | 8500 | 3500 | 1.4x10^-2 | ≤20 | |
100 | 5 | 11 | 8.9 | 25 | 8500 | 3500 | 1.4x10^-2 | ≤20 |
Product Views
Ultra-fine ADI Material
We develop ultra-fine ADI material from continuously cast hollow ductile iron profiles via isothermal quenching, featuring self-lubrication, low temperature rise, vibration/noise reduction, wide operating temperature range, and long service life.
Ultra-precision Heat Treatment Process
By balancing hardness and toughness to counter harmonic-induced fatigue, we developed and mass-produced an optimized heat treatment process based on pre- and post-process stress control.
Innovative S-shaped Tooth Profile Design
In collaboration with a university lab, we invented the S-shaped harmonic tooth profile design theory and developed simulation software for automatic S-curve generation based on kinematics, tribology, and lubrication.
Independent Design and Development of Cutting Tools
We developed an integrated front-cutting rear-pressing composite tool for harmonic gears, solving the tool manufacturing difficulty for micro-small reducers and creating a unique industry series of micro-small harmonic reducer products.
Toughness Protection
Using electroslag remelting and repeated spinning, we enhance material stability to meet fatigue strength requirements, while ductile deformation under overload protects the mechanical structure from damage.
Application Cases
Industrial Robots
Service Robots
Collaborative Robots
Medical Robots
Exoskeleton Robots
Smart Home Robots










