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U.S. imports of flywheels and pulleys, including pulley blocks (HS 848350) totaled $66.5M in July 2026, traded with 55 countries.
Importers of Flywheels and Pulleys, Including Pulley Blocks paid $10.3M in duties in July 2026 — an effective duty rate of 18% on $55.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Flywheels and Pulleys, Including Pulley Blocks imports of $66.5M in July 2026 ran 13% above the year-to-date monthly average of $59.0M.
Last updated: July 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.
4.5K shipments/mo
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.
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Subheading 5 of 7 in heading 8483
Subheading 848350 · $66.5M of $957.6M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8483509040 | Grooved Pulleys, NESOI | $24.2M | 13.44% | 77.69% | $3.3M |
| 8483509080 | Pulley Blocks and Pulleys, NESOI | $22.3M | 19.08% | 81.95% | $4.3M |
| 8483506000 | Flywheels, NESOI | $20.1M | 8.53% | 101.14% | $1.7M |
| 8483504000 | Gray-Iron Awning or Tackle Pulleys, Lt=6.4 Cm Dia | $200K | 17.81% | 96.95% | $36K |
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 | $20.2M |
| 8483508030 | Grooved Pulleys, NESOI | $13.6M |
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.
ImportsExports
Imports
$66.5MYoY · Pro
Exports
$31.3MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
customs district
destination
entry
rate provision · imports
15.7% enters free of duty; the effective duty rate is 15.42%.