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SITCSection 7
U.S. imports of linear-acting hydraulic power engines & motors (cylinders) (SITC 71891) totaled $137.2M in April 2026, traded with 54 countries.
Importers of Linear-Acting Hydraulic Power Engines & Motors (Cylinders) paid $28.6M in duties in April 2026 — an effective duty rate of 28% on $102.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataHydraulic cylinders — both single-acting and double-acting — that convert fluid pressure into linear mechanical force are the core product of this heading, serving construction equipment, industrial presses, aircraft landing gear, and marine steering systems. The distinction from rotary hydraulic motors (which produce torque rather than linear thrust) is the primary classification boundary. Bore diameter, stroke length, operating pressure rating, and rod material (chrome-plated, stainless) are the specification parameters that drive commercial differentiation and, in some cases, antidumping exposure for certain product configurations.
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A linear-acting hydraulic engine or motor (cylinder) produces straight-line force and displacement through a piston and rod assembly. A rotary hydraulic motor produces continuous rotational torque. The output motion — linear vs. rotational — is the definitive classification criterion, regardless of the fluid medium or operating pressure.
Importers should document bore diameter, stroke length, maximum operating pressure, rod diameter and material, and whether the cylinder is single- or double-acting. These parameters not only support classification but are also relevant if the product falls within the scope of any antidumping or countervailing duty orders covering hydraulic cylinders, where precise physical specifications determine scope inclusion or exclusion.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| UNITED KINGDOM | $18.6M | $23.4M | +$4.8M |
| CANADA | $19.5M | $17.1M | -$2.4M |
| MEXICO | $14.1M | $13.7M | -$350K |
| GERMANY | $12.7M | $5.3M | -$7.4M |
| CHINA | $7.2M | $7.1M | -$77K |
Monthly import values over time