This article provides an in-depth comparison between Direct Drive (DD) motors and harmonic rotary actuators, covering their transmission principles, advantages and disadvantages, and typical application fields.

In high-speed semiconductor sorting and packaging equipment, turret indexing must achieve two goals at the same time: short cycle time and repeatable positioning accuracy. Many engineers initially assume that the key to faster turret indexing is simply using a higher-power motor. In practice, however, the performance of the complete transmission system is often more important than motor power alone. A conventional turret drive may use a servo motor combined with a gearbox, coupling, belt or other mechanical transmission components. These components can introduce backlash, elastic deformation, friction, transmission error and additional inertia. A Direct Drive Motor takes a different approach. By directly connecting the motor to the turret, the system can eliminate the need for a conventional reduction gearbox and reduce the number of mechanical transmission components between the motor and the rotating load.

The HPG zero backlash gearbox was developed to address this challenge. Through an innovative self-compensating backlash elimination structure, HPG combines precision, torque capacity, rigidity, and long-term stability, creating a new generation of high-performance transmission technology for demanding industrial applications.

South Korea's DRAM and NAND exports surged in May 2026, with DDR5 prices reportedly surpassing gold. Rising memory costs are increasing BOM pressure on AI edge devices, smart sensor modules, and robotics manufacturers, accelerating demand for cost-efficient integrated solutions and more resilient supply chains.