HS Code for Gearboxes and Speed Reducers
The HS Code for gearboxes and speed reducers is 848340. The MFN duty rate for importing to the US is 2.5%.
| HS Code (6-digit) | 848340 |
|---|---|
| US Duty Rate (MFN) | 2.5% |
| EU Duty Rate (MFN) | 2.7% |
| Chapter | 84 |
| Heading | 8483 |
| Last Updated | 2026-05 |
Description
Gears and gearing; ball or roller screws; gear boxes and other speed changers
HS Code 848340 covers gearboxes and speed changers with a US MFN duty rate of 2.5%.
Frequently Asked Questions
What are the specific NOM standards required for importing gearboxes into Mexico under HTS 848340?
Gearboxes imported into Mexico under HTS 8483.40 must comply with the applicable Official Mexican Standards (NOMs), which may include NOM-001-SECRE-2021 for electrical safety if they incorporate electric motors, and specific labeling requirements. Importers must obtain a Certificate of Compliance (CoC) from an accredited Mexican verification unit (Organismo de Certificación) to present during customs clearance.
How does the material composition of a gearbox, such as whether it is made of cast iron or aluminum, affect its classification under HTS 848340?
The material itself (e.g., cast iron vs. aluminum) generally does not change the classification under HTS 8483.40, as the heading covers gearboxes regardless of the metal used for the housing or internal components. However, if the gearbox contains precious metals like gold or platinum in the bearings or as a coating, or is made primarily of ceramic components, it may be excluded and require classification elsewhere based on the essential character.
Distinguishing Gearboxes from Related Transmission Components
Gearboxes (8483.40) are most often confused with parts of other power transmission systems. Be careful not to classify them as parts of vehicle gearboxes under 8708.40, which are specifically for motor vehicles. Similarly, gearboxes forming an integral part of an electric motor or generator are classified with that machine (e.g., 8501.10). Simple, unmounted gear wheels and other gearing elements fall under 8483.90 as parts, not as assembled gearboxes. Always verify if the unit is a standalone speed changer or a component of a larger machine.
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