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HSChapter 84
U.S. imports of flat-surface grinding machines, numerically controlled (HS 846012) totaled $7.3M in June 2026, traded with 13 countries.
Importers of Flat-Surface Grinding Machines, Numerically Controlled paid $783K in duties in June 2026 — an effective duty rate of 14% on $5.5M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Numerically controlled flat-surface grinding machines use programmed axes to achieve precise, repeatable stock removal across flat workpieces — a critical capability in aerospace, die-and-mold, and precision tooling shops. Switzerland and Germany are the leading US import sources, reflecting the premium engineering standards these markets bring to high-accuracy surface grinding. The US tariff schedule divides the heading into two 10-digit lines: used or rebuilt machines (8460120040) and new machines (8460120080), a distinction that affects both duty treatment and eligibility for certain trade-remedy measures. Importers should verify whether specific models are subject to Section 301 tariffs based on country of origin.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US schedule splits this heading into 8460120040 for used or rebuilt machines and 8460120080 for new machines. The new/used distinction affects the applicable duty rate and may also affect eligibility for certain trade-remedy exclusions, so accurate condition declaration is essential at entry.
Machines originating from certain countries may be subject to Section 301 tariffs. Because rates and product-specific exclusions change frequently, importers should confirm current applicability with a licensed customs broker before entry.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| SWITZERLAND | $6.0M | -- | -$6.0M |
| COSTA RICA | -- | $548K | +$548K |
| UNITED KINGDOM | $402K | -- | -$402K |
| TAIWAN | $285K | -- | -$285K |
| JAPAN | $264K | $16K | -$248K |
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8460120080 | FLAT-SURF GRIND MACHS, NUMERICALLY CONTROLLED, NEW | $6.9M | 10.53% | 73.85% | $731K |
| 8460120040 | FLAT-SURF GRIND MACH, NUMB CONTROL, USED OR REBULT | $362K | 14.40% | 100.00% | $52K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8460120080 | FLAT-SURF GRIND MACHS, NUMERICALLY CONTROLLED, NEW | $616K |
| 8460120040 | FLAT-SURF GRIND MACH, NUMB CONTROL, USED OR REBULT | $71K |
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| Ohio | $3.5M | -- | -$3.5M |
| Illinois | $2.8M | $68K | -$2.8M |
| New Jersey | -- | $548K | +$548K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BALTIMORE, MD | $3.5M | -- | -$3.5M |
| NEWARK, NJ | $2.4M | -- | -$2.4M |
| PORT EVERGLADES, FL | $525K | $548K | +$23K |