Planetary gearheads are used on high precision motion control applications which require a high torque to volume ratio, high torsional stiffness, and low backlash. Danaher Motion has combined the positive attributes of gear crowning and helical gearing with planetary construction to create the smoothest operating gearhead on the market, the UltraTRUE True Planetary Gearheads. Danaher Motion offers these precision planetary gearheads for all duty cycles