Gear Motor Principle

Gear motors convert electrical energy into mechanical energy through electromagnetic induction. The core principle is that the magnetic force generated by an energized coil drives a small gear (typically 5-20mm in diameter) to mesh and rotate with a large gear (20-100mm in diameter), achieving torque amplification (transmission ratio 3:1 to 100:1) and speed regulation. A typical structure includes a copper coil (resistance 0.5-5Ω), hardened steel gears (hardness HRC58-62), and an output shaft (torque range 1-500 N·m), with a conversion efficiency of 85%-92%. This technology is widely used in automotive transmissions (improving transmission efficiency by 15%), industrial robotic arms (positioning accuracy ±0.1mm), and medical equipment (noise <45dB), offering advantages such as long lifespan (continuous operation for over 8000 hours) and fast response (start-up time <0.1 seconds).