U.S. imports of Gears, Gearing, Ball Screws, Gear Boxes & Speed Changers (SITC 74840) totaled $306.9M in August 2026, imported from 90 countries.
Importers of Gears, Gearing, Ball Screws, Gear Boxes & Speed Changers paid $47.0M in duties in August 2026, an average duty rate of 14.60% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataGear 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.
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11.2K import shipments a month
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.
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.
Basic heading 78 of 642 in section 7
Basic heading 74840 · $306.9M of $172.0B
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Imports · August 2026
origin
China pays 41.2% duty; Italy 8.4%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$306.9MYoY · free account
Exports
$156.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $3.5B of Gears, Gearing, Ball Screws, Gear Boxes & Speed Changers.
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.