8501.40.20.20 - Gear motors

This HTS category, 8501.40.20.20, specifically covers AC single-phase electric motors with an output power exceeding 37.5 Watts but not exceeding 74.6 Watts, when these motors are integrated with a gearbox to form a gear motor unit. Gear motors are designed to provide both rotational motion and torque, with the integrated gearbox reducing the speed and increasing the output torque of the electric motor. This classification is applied to the assembled unit, where the primary function is delivered by the combined motor and gear system.

Distinguishing this category from its sibling, 8501.40.20.40 ("Other"), is crucial. While both fall under AC single-phase motors within the specified power range, this category is exclusively for those featuring an integrated gearbox. The sibling category would encompass AC single-phase motors of the same power output that *lack* an integrated gearbox or are not designed for gearbox integration as a primary feature. Therefore, the presence and function of the gearbox are the key distinguishing factors.

As this is a leaf node within the HTS database, there are no further subcategories to introduce. Classification is complete at this level, meaning that any AC single-phase motor unit meeting the power output criteria and incorporating a gearbox falls directly into this classification. Examples include compact gear motors used in small appliances, automated doors, or robotic actuators where specific speed reduction and torque are required from a single integrated unit.