Small Size High Precision Harmonic Drive

Product Description

The model 8 and model 11 harmonic drive of LS and LH series are known as the mini-shaped strain wave reducer.

LS And LH series miniature strain wave reducers provide high positioning accuracy in a very compact package.

These mini strain wave gears harmonic drive are well suited for semiconductor and robotics applications, especially end of arm axes for small industrial and collaborative robots, industrial machinery where weight is a critical factor.

How it Works

The Flexspline is slightly smaller in diameter and has two fewer teeth than the Circular Spline. The elliptical shape of the Wave Generator causes the teeth of the Flexspline to engage the Circular Spline at two opposite regions across the major axis of the ellipse. For every 180 degree clockwise rotation of the Wave Generator the Flexspline teeth are advanced counterclockwise by one tooth in relation to the Circular Spline. Each complete clockwise rotation of the Wave Generator results in the Flexspline moving counter-clockwise by two teeth from its original position relative to the Circular Spline.

Key Features

• Cup-shaped structure, high torque capacity, high stiffness, standard barrel structure with high rigidity full roller cross bearings and long lifespan.
• Higher rigidity, precision, and torque.
• Compact and concise design with zero backlash, direct motor connection for convenient installation.
• Input and output coaxial.
• Excellent positional accuracy and repeatability.

Parameters Table of Miniature Harmonic Drive

Key Attributes of LS and LH Series Miniature Strain Wave Reducer
Product	Mini Strain Wave Reducer Harmonic Drive
Material	Steel, Aluminum, Polyurethane, Bearings and Seals, Lubricants
Reduction Ratio	50, 80, 100
Backlash	Less than 30 Arc Sec
Average Input Speed	3500 r/min
Max Input Speed	8500 r/min
Design Life	10000 hours
Model	8, 11
Weight	0.06 to 0.27 kg
Warranty	1 year

Application

Industrial Robots	Aerospaces
Packaging Systems	CNC Machines

FAQ

---

1. What is a harmonic drive box?

A harmonic drive box is a type of gear system that produces high reduction ratios in a compact size. It uses the mechanics of a flexible element deforming to transmit motion and achieve high precision and torque.

2. How does a harmonic gear box work?

A harmonic gear box works by using a circular spline, flexspline, and a wave generator. The wave generator deforms the flexspline into an elliptical shape, which then engages with the teeth of the circular spline at two points, providing a high reduction ratio through the difference in tooth count between the engaged elements.

3. Can a harmonic drive be backdriven?

Yes the harmonic drive gear can be driven back. By the way, this happens in every typical robotic cycle hundreds of times every day: Every time when the axis is in motion and slowed down rapidly, the load inertia on the gear output side drives back the gear (in a controlled manner, determined by motor and controller).

4. What does a harmonic drive do?

Hamornic drives are used in increasing the output torque in gears used in milling, in manufacturing, and in machines that use robotic arms.

5. Do you support customizing a harmonic drive do?

Yes of course. We can customize a harmonic drive based on customer's specific requirements and drawing.

6. What's the biggest advantage of your products?

We can provide complete product series, and the qualty of our harmonic drive is stable. The most important is the highest cost-effective in China.

Suzhou Giant Precision Industry Co., Ltd. is a technical-service enterprise specializing in keeping on researching core technologies and developing high precision transmission products. We mainly provide strain wave reducers, RV reducers, rotary actuator, planetary reducers, electric grippers.

Currently, our products have been widely used in a variety of industrial sectors, such as manipulator, industrial robots, CNC machine tool, printing equipment, textile machine, packaging machinery, non-standard automation, medical equipment, laser cutting, welding, automobile manufacturing, satellite communications, metal processing, pharmaceutical industry, etc.

Our mission is to adhere to our service philosophy, put customer value in our first place, to provide high-quality products, professional technical support and diverse services.