# HS code 8483.40: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters

> HS code 8483.40 covers gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters. It sits in heading 84.83 (transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). Other goods of heading 84.83 are classified under 8483.10 (transmission shafts (including cam shafts and crank shafts) and cranks), 8483.20 (bearing housings, incorporating ball or roller bearings), 8483.30 (bearing housings, not incorporating ball or roller bearings; plain shaft bearings), 8483.50 (flywheels and pulleys, including pulley blocks) or 2 others.

Source: https://staging.border.bot/hs-codes/848340
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 84](https://staging.border.bot/hs-codes/84) / [84.83](https://staging.border.bot/hs-codes/8483) / [8483.40](https://staging.border.bot/hs-codes/848340)

## Key facts

- HS code: 8483.40
- Covers: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters
- Heading: [84.83: Transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)](https://staging.border.bot/hs-codes/8483)
- Chapter: [84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof](https://staging.border.bot/hs-codes/84)
- Edition: HS2022
- Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries)

## What this code covers

HS code 8483.40 covers gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters.

The legal text of the subheading is “Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters”, in HS2022.

## What it doesn’t cover

Other goods of heading 84.83 are classified under 8483.10 (transmission shafts (including cam shafts and crank shafts) and cranks), 8483.20 (bearing housings, incorporating ball or roller bearings), 8483.30 (bearing housings, not incorporating ball or roller bearings; plain shaft bearings), 8483.50 (flywheels and pulleys, including pulley blocks) or 2 others.

- [8483.10](https://staging.border.bot/hs-codes/848310) Transmission shafts (including cam shafts and crank shafts) and cranks
- [8483.20](https://staging.border.bot/hs-codes/848320) Bearing housings, incorporating ball or roller bearings
- [8483.30](https://staging.border.bot/hs-codes/848330) Bearing housings, not incorporating ball or roller bearings; plain shaft bearings
- [8483.50](https://staging.border.bot/hs-codes/848350) Flywheels and pulleys, including pulley blocks
- [8483.60](https://staging.border.bot/hs-codes/848360) Clutches and shaft couplings (including universal joints)
- [8483.90](https://staging.border.bot/hs-codes/848390) Toothed wheels, chain sprockets and other transmission elements presented separately; parts

## How it is structured

8483.40 is a six-digit subheading. Its first two digits, 84, are the chapter; the first four, 8483, are heading 84.83; the last two, 40, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
- Heading 84.83: Transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)
- Subheading 8483.40: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters

## In other countries

No national tariff lines under 8483.40 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 8483.40 at six digits and add their own digits after it.

- Previous subheading: [8483.30](https://staging.border.bot/hs-codes/848330) Bearing housings, not incorporating ball or roller bearings; plain shaft bearings
- Next subheading: [8483.50](https://staging.border.bot/hs-codes/848350) Flywheels and pulleys, including pulley blocks

## Frequently asked questions

### What does HS code 8483.40 cover?

HS code 8483.40 covers gears and gearing, other than toothed wheels, chain sprockets and other transmission elements presented separately; ball or roller screws; gear boxes and other speed changers, including torque converters.

### Which heading and chapter is HS code 8483.40 in?

HS code 8483.40 is in heading 84.83 (transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).

### Where are goods of heading 84.83 classified when 8483.40 doesn’t fit?

Other goods of heading 84.83 are classified under 8483.10 (transmission shafts (including cam shafts and crank shafts) and cranks), 8483.20 (bearing housings, incorporating ball or roller bearings), 8483.30 (bearing housings, not incorporating ball or roller bearings; plain shaft bearings), 8483.50 (flywheels and pulleys, including pulley blocks) or 2 others.

## Sources and updates

The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026.

This page was last updated on 13 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Machine-readable: https://staging.border.bot/hs-codes/848340.json