Product classification
HS code for CNC tool grinder: 8460.31
Machine-tools, sharpening (tool or cutter grinding) machines, numerically controlled.
Classification of CNC tool grinder under HS 8460.31
A CNC tool grinder is classified under HS code 846031 because it is a machine-tool specifically designed for sharpening (tool or cutter grinding) and is numerically controlled. These machines are engineered to restore the cutting edge and geometry of various industrial tools, such as drills, end mills, reamers, and hobs, to their original specifications or to modify them for specific applications. The numerical control system provides unparalleled precision and automation, allowing for complex tool geometries to be ground accurately and repeatedly, which is crucial for maintaining tool performance and extending tool life in manufacturing operations.
- Covers
- CNC universal tool and cutter grinders
- CNC drill sharpening machines
- CNC end mill grinders
- CNC hob sharpening machines
- CNC reamer grinders
- CNC gear cutter grinders
- Also under 8460.31
- ANCA MX7
- Walter Helitronic Power
- Rollomatic GrindSmart 629XS
- Schneeberger Aries
- Saacke UWIIF
Codes often confused with 8460.31
Common mistake. Common misclassifications can occur with HS 846039, which covers other sharpening (tool or cutter grinding) machines that are not numerically controlled. The defining characteristic for 846031 is the "numerically controlled" feature. Another point of distinction is from HS 846012, which pertains to numerically controlled flat-surface grinding machines. While both are grinding machines, tool grinders are specialized for sharpening cutting tools, whereas surface grinders are for general flat surface finishing. Similarly, HS 846022, covering other numerically controlled grinding machines (e.g., cylindrical, centerless), is distinct because its primary function is not tool sharpening but other forms of precision grinding.
Top exporters and importers of HS 846031 (the code used for CNC tool grinder), 2025
In 2025, the largest exporter of HS 846031 (the code used for CNC tool grinder) in UN Comtrade data was Thailand, with 19% of world exports; the largest importer in UN Comtrade data was China, with 32% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 846031, not only CNC tool grinder.
Top exporters 2025 · share of world exports
- 1 Thailand $58M 19% of world exports
- 2 Germany $52M 17% of world exports
- 3 Switzerland $49M 16% of world exports
World total: $304M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $117M 32% of world imports
- 2 United States $44M 12% of world imports
- 3 Germany $21M 5.7% of world imports
World total: $363M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for CNC tool grinder
Brazil classifies CNC tool grinder under NCM 8460.31.00: HS 8460.31 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about CNC tool grinder
What is the HS code for CNC tool grinder?
The HS code for CNC tool grinder is 846031 (Machine-tools; sharpening (tool or cutter grinding) machines, numerically controlled). The HS code for a CNC tool grinder is 846031.
How do I classify CNC tool grinder for customs?
CNC tool grinder is classified under HS code 846031 — Machine-tools; sharpening (tool or cutter grinding) machines, numerically controlled. This is a 6-digit subheading level code.
What types of tools are typically sharpened by machines under HS 846031?
This classification covers machines designed for sharpening a wide range of cutting tools, including drills, end mills, reamers, hobs, taps, and other industrial cutters, to maintain or restore their precise cutting geometries.
Which countries are the top exporters of CNC tool grinder (HS 846031)?
In 2025, the top exporters of HS 846031 (the code used for CNC tool grinder) in UN Comtrade data were Thailand ($58M, 19% of world exports), Germany ($52M) and Switzerland ($49M). World exports came to about $304M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of CNC tool grinder (HS 846031)?
In 2025, the top importers of HS 846031 (the code used for CNC tool grinder) in UN Comtrade data were China ($117M, 32% of world imports), the United States ($44M) and Germany ($21M). World imports came to about $363M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for CNC tool grinder the same in all countries?
The base HS code 846031 for CNC tool grinder is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for CNC tool grinder in Brazil?
In Brazil, CNC tool grinder (HS 846031) is classified under NCM 8460.31.00.