SITCSection 7

Gears, Gearing, Ball Screws, Gear Boxes & Speed Changers

Name: Gears, Gearing, Ball Screws, Gear Boxes & Speed Changers (SITC 74840) -- U.S. Import Data
Creator: U.S. Census Bureau
License: https://www.census.gov/about/policies/open-gov/open-data.html

SITC 74840Basic heading5-digit

U.S. imports · July 2026: $320.3M; YTD $2.1B

U.S. exports · July 2026: $153.7M

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Balance · July 2026: Loading the trade balance

U.S. imports of gears, gearing, ball screws, gear boxes & speed changers (SITC 74840) totaled $320.3M in July 2026, traded with 89 countries.

Importers of Gears, Gearing, Ball Screws, Gear Boxes & Speed Changers paid $43.6M in duties in July 2026 — an effective duty rate of 19% on $233.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.

Last updated: July 2026 data

Gear drives, ball screws, gear boxes, and torque converters are foundational motion-control components in machine tools, robotics, wind turbines, and automotive drivetrains, making this one of the more widely traded mechanical-components headings. Ball screws in particular are precision-ground articles whose accuracy grade (C3 through C10) directly affects classification and pricing negotiations with suppliers. Section 301 tariffs apply to imports from certain origins, so supply-chain teams routinely evaluate alternative sourcing to manage landed cost.

AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.

10.5K shipments/mo

12-month trend

ImportsExports

Imports

$320.3MYoY · Pro

Exports

$153.7MYoY · Pro

12-mo low · imports

YoY · Pro

$320.3M$0

June 2025December 2025July 2026

Through July 2026. Source: U.S. Census Bureau.

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Basic heading 69 of 642 in section 7

Share of section 7 imports0.18%

Basic heading 74840 · $320.3M of $175.6B

Where it comes from, where it lands, what it pays

Imports · July 2026

Countries

origin

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Districts

customs district

Census does not publish district detail for this classification system.

States

destination

Census does not publish state detail for this classification system.

Ports

entry

Census does not publish port detail for this classification system.

Frequently Asked Questions

How does accuracy grade affect the classification or valuation of imported ball screws?

While SITC 74840 does not subdivide by grade, the corresponding HTS subheadings may distinguish precision ball screws from standard ones. Accuracy grade (per ISO or JIS standards) also affects customs valuation because higher-grade screws command significantly different transaction values — importers should ensure invoices reflect the correct grade specification.

Are gear boxes and torque converters subject to Section 301 tariffs?

Imports from certain countries are subject to Section 301 tariffs at the HTS subheading level. The applicability depends on the specific 10-digit HTS code and the country of origin; importers should consult the USTR's Section 301 product lists and a licensed customs broker to confirm current exposure.