U.S. imports of Flywheels and Pulleys, Including Pulley Blocks (HS 848350) totaled $62.4M in August 2026, imported from 57 countries.
Importers of Flywheels and Pulleys, Including Pulley Blocks paid $10.5M in duties in August 2026, an average duty rate of 16.99% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataChina dominates US import supply of flywheels and pulleys, with Mexico and Japan also significant sources, making Section 301 exposure a key landed-cost consideration for procurement teams. The US tariff schedule subdivides this heading by material and geometry: gray-iron awning or tackle pulleys under 6.4 cm diameter (8483504000), grooved pulleys (8483508030, 8483509040), flywheels (8483506000), and catch-all pulley block lines (8483508080, 8483509080). Flywheels serve energy-storage and rotational-smoothing roles in engines and industrial machinery, while grooved pulleys are critical to belt-drive systems across manufacturing, HVAC, and agricultural equipment. Correct classification hinges on whether the article is a flywheel, a grooved pulley, or a plain pulley block, as each maps to a distinct 10-digit line with potentially different duty treatment.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4.6K import shipments a month
A grooved pulley (8483508030 or 8483509040) has a circumferential groove designed to seat a belt or rope, whereas a pulley block (8483508080 or 8483509080) is a complete tackle assembly incorporating a wheel and housing used to redirect or multiply force. Importers should document the article's design function and whether it is presented as a standalone wheel or as part of a block assembly to support the correct 10-digit classification.
Many lines under this heading sourced from China are subject to Section 301 tariffs. Because rates and product-specific exclusions change, importers should verify current applicability against the specific 10-digit HTS code with a licensed customs broker before finalizing landed-cost calculations.
Subheading 5 of 7 in heading 8483
Subheading 848350 · $62.4M of $937.4M
ImportsExports
Imports
$62.4MYoY · free account
Exports
$34.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $689.2M of Flywheels and Pulleys, Including Pulley Blocks and exported $394.3M.
Through August 2026. Source: U.S. Census Bureau.
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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 |
|---|---|---|---|---|---|
| 8483509040 | Grooved Pulleys, NESOI | $27.8M | 14.89% | 75.71% | $4.1M |
| 8483509080 | Pulley Blocks and Pulleys, NESOI | $21.1M | 19.56% | 84.48% | $4.1M |
| 8483506000 | Flywheels, NESOI | $13.1M | 17.34% | 96.36% | $2.3M |
| 8483504000 | Gray-Iron Awning or Tackle Pulleys, Lt=6.4 Cm Dia | $45K | 14.83% | 94.45% | $7K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8483508080 | Flywheels, Pulley Blocks and Pulleys, NESOI | $19.8M |
| 8483508030 | Grooved Pulleys, NESOI | $14.9M |
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.
Imports · August 2026
origin
China pays 32.5% duty; Mexico 7.0%.
customs district
destination
entry
rate provision · imports
16.5% enters free of duty; duty collected equals 16.99% of imports for consumption.