U.S. imports of Numerically Controlled Tool & Cutter Sharpening Machines (SITC 73165) totaled $4.6M in August 2026, imported from 16 countries.
Importers of Numerically Controlled Tool & Cutter Sharpening Machines paid $361K in duties in August 2026, an average duty rate of 7.83% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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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38 import shipments a month
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.
Basic heading 485 of 642 in section 7
Basic heading 73165 · $4.6M of $172.0B
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ImportsExports
Imports
$4.6MYoY · free account
Exports
$1.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $44.5M of Numerically Controlled Tool & Cutter Sharpening Machines.
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.
Imports · August 2026
origin
Germany and Japan together supply 47% of it. Japan pays 12.5% duty; Canada 0.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.