U.S. imports of Flat-Surface Grinding Machines, Not Numerically Controlled (Axis Accuracy ≥ 0.01 mm) (HS 846019) totaled $2.2M in August 2026, imported from 17 countries.
Importers of Flat-Surface Grinding Machines, Not Numerically Controlled (Axis Accuracy ≥ 0.01 mm) paid $222K in duties in August 2026, an average duty rate of 10.28% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Flat-Surface Grinding Machines, Not Numerically Controlled (Axis Accuracy ≥ 0.01 mm) imports of $2.2M in August 2026 ran 27% above the year-to-date monthly average of $1.7M.
Last updated: August 2026 dataManually or conventionally controlled flat-surface grinders with axis accuracy of 0.01 mm or better occupy a distinct tariff position from their CNC counterparts — a classification boundary that trade professionals must navigate carefully when the machine has partial digital readout but no full NC control. Thailand and Taiwan are the leading US import sources for this category, supplying cost-competitive conventional surface grinders widely used in job shops and maintenance operations. The US schedule provides three 10-digit lines covering used/rebuilt machines (8460190105), new reciprocating-table machines (8460190110), and other new non-NC machines meeting the accuracy threshold (8460190150). Correct classification hinges on confirming the absence of numerical control, not merely the absence of CNC programming.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
26 import shipments a month
A digital readout (DRO) alone does not constitute numerical control. Numerical control requires programmed, closed-loop axis movement. A machine with only a DRO for operator reference should be classified under the non-numerically-controlled heading (846019), not 846012, provided it meets the 0.01 mm axis accuracy threshold.
The US schedule specifically breaks out new reciprocating-table flat-surface grinders (8460190110) from other non-NC flat-surface grinders (8460190150) because the table motion type is a recognized commercial and engineering distinction. Importers should confirm table configuration in technical documentation to support correct line selection.
ImportsExports
Imports
$2.2MYoY · free account
Exports
$304KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $18.7M of Flat-Surface Grinding Machines, Not Numerically Controlled (Axis Accuracy ≥ 0.01 mm) and exported $6.9M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Italy and Taiwan together supply 80% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 10.28% of imports for consumption.
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 |
|---|---|---|---|---|---|
| 8460190150 | Flat-Sur Grind Ma, Mtl Remov, Acc0.01mm, Ex N/C, NESOI | $1.7M | 9.78% | 100.00% | $167K |
| 8460190110 | Flat-Sur Grind Mac, Recip-Tab, Mtl Remov, Exc N/C, New | $447K | 12.19% | 100.00% | $55K |
| 8460190105 | Flat-Surf Grind Mach, NESOI, Used/Rebuilt | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8460190105 | Flat-Surf Grind Mach, NESOI, Used/Rebuilt | $279K |
| 8460190110 | Flat-Sur Grind Mac, Recip-Tab, Mtl Remov, Exc N/C, New | $25K |
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.
Trade Directory
List your company under HS 846019 — Flat-Surface Grinding Machines, Not Numerically Controlled (Axis Accuracy ≥ 0.01 mm), so the companies trading it can find you. Be the first supplier listed.
Subheading 7 of 10 in heading 8460
Subheading 846019 · $2.2M of $104.9M