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SITCSection 7
U.S. imports of numerically controlled tool & cutter sharpening machines (SITC 73165) totaled $4.7M in April 2026, traded with 13 countries.
Importers of Numerically Controlled Tool & Cutter Sharpening Machines paid $645K in duties in April 2026 — an effective duty rate of 14% on $4.5M in dutiable value, based on actual customs collections rather than the published tariff schedule. Numerically Controlled Tool & Cutter Sharpening Machines imports of $4.7M in April 2026 ran 28% above the year-to-date monthly average of $3.6M.
Last updated: April 2026 dataCNC tool and cutter grinding machines restore cutting-edge geometry on end mills, drills, reamers, and other rotary tools, making them essential maintenance equipment in precision machining facilities and cutting-tool reconditioning services. The numerically controlled designation is the primary classification driver here, distinguishing these machines from their manually operated counterparts in the adjacent heading. Given that high-end CNC tool grinders are frequently sourced from Germany, Switzerland, and Japan, importers should assess whether applicable trade-remedy measures affect their specific origin.
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Tool and cutter grinders are specifically designed to regrind the cutting edges of multi-flute tools — end mills, drills, taps, and similar items — using complex coordinated axis movements to follow the tool's helical geometry. General-purpose CNC grinders work on workpiece surfaces rather than tool edges. The machine's intended application and design architecture determine which heading applies.
A manufacturer's technical datasheet identifying the CNC controller model and axis count, along with any programming interface documentation (G-code capability, CAM software compatibility), provides strong evidence. CBP may also accept a declaration from the manufacturer confirming the machine executes stored numerical programs to control axis movement.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | -- | $2.1M | +$2.1M |
| GERMANY | $1.6M | -- | -$1.6M |
| CZECH REPUBLIC | $1.2M | -- | -$1.2M |
| THAILAND | $852K | -- | -$852K |
| JAPAN | $750K | -- | -$750K |
Monthly import values over time