Thomson Micron® offers the largest selection of TRUE Planetary® gearheads in the world. Our gearmotor product line includes both the NemaTRUE and the ValueTRUE gearheads, ranging in frame size from 60 mm to 142 mm and ratios from 3:1 to 25:1. Helical Crowned TRUE Planetary design is industry leading in smoothness, torque and precision.