In SCARA robots, 3C automation equipment, and precision assembly systems, harmonic drive gearboxes have become the preferred transmission solution thanks to their high precision, near-zero backlash, high reduction ratios, and compact design. When selecting a gearbox, engineers typically focus on parameters such as rated torque, reduction ratio, backlash, and torsional rigidity. However, one critical specification that is often overlooked is startup torque.

This article provides a comprehensive overview of the HONPINE HAG harmonic drive robotic actuator unit with torque sensor, including its functions, advantages, disadvantages, and application value.

Ten years ago, the options for purchasing harmonic drives were very limited. The main choices were Harmonic Drive from Japan and a few Chinese brands such as HONPINE and Leaderdrive. Today, however, when you search keywords like harmonic drive, harmonic drive reducer, or harmonic drive gearbox on Google, you will find dozens of suppliers. So in 2026, how can we truly purchase high-quality harmonic drives?

This article will provide a comprehensive analysis of harmonic drive gearboxes, including their introduction, advantages and disadvantages, backlash, application scenarios, and installation precautions.