U.S. imports of Balancing Machines for Mechanical Parts (HS 903110) totaled $3.4M in August 2026, imported from 38 countries.
Importers of Balancing Machines for Mechanical Parts paid $503K in duties in August 2026, an average duty rate of 14.70% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Balancing Machines for Mechanical Parts imports of $3.4M in August 2026 ran 19% above the year-to-date monthly average of $2.9M.
Last updated: August 2026 dataDynamic and static balancing machines — used to detect and correct mass imbalance in rotating components such as crankshafts, turbine rotors, driveshafts, and fan assemblies — enter under a single US tariff line (9031100000). These machines are capital equipment for automotive, aerospace, and industrial machinery manufacturing, where rotor imbalance causes vibration, bearing wear, and premature failure. Germany and Italy dominate US import supply, consistent with their global leadership in precision machine-tool manufacturing, with China and Japan also notable sources. Balancing machines are purely mechanical/metrology equipment and carry no mandatory admissibility agency review.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
166 import shipments a month
Wheel balancers used in tire service applications are generally classified under heading 9031 as balancing machines, but the specific subheading depends on their design and function. A machine purpose-built for balancing automotive wheels may fall under 9031100000 if it meets the 'balancing mechanical parts' description. However, some wheel balancers with integrated diagnostic or alignment functions may be classified differently. A binding ruling is advisable for high-volume imports of automotive service equipment.
Importers should retain the manufacturer's technical datasheet showing the machine's balancing method (static, dynamic, or both), maximum rotor weight and diameter, rotational speed range, and intended application. These specifications help CBP confirm classification and distinguish balancing machines from related equipment such as vibration analyzers or machine-tool testing apparatus.
Subheading 6 of 6 in heading 9031
Subheading 903110 · $3.4M of $712.0M
ImportsExports
Imports
$3.4MYoY · free account
Exports
$3.0MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $31.2M of Balancing Machines for Mechanical Parts and exported $63.2M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 9031100000 | Machines for Balancing Mechanical Parts | $3.4M | 14.70% | 99.58% | $503K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9031100000 | Machines for Balancing Mechanical Parts | $3.0M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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Imports · August 2026
origin
Germany and Italy together supply 46% of it. China pays 37.5% duty; Germany 10.0%.
customs district
destination
entry
rate provision · imports
0.4% enters free of duty; duty collected equals 14.70% of imports for consumption.