U.S. imports of Centerless Grinding Machines, Numerically Controlled (HS 846022) totaled $422K in August 2026, imported from 7 countries.
Importers of Centerless Grinding Machines, Numerically Controlled paid $42K in duties in August 2026, an average duty rate of 10.00% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Centerless Grinding Machines, Numerically Controlled imports of $422K in August 2026 ran 14% below the year-to-date monthly average of $489K.
Last updated: August 2026 dataCenterless grinding machines — which support the workpiece between a grinding wheel and a regulating wheel rather than between centers — are essential for high-volume cylindrical part production in automotive, bearing, and fastener manufacturing. Japan and Germany lead US imports of numerically controlled centerless grinders, reflecting the deep precision-machine-tool industries in both countries. The US tariff schedule separates used or rebuilt machines (8460220040) from new machines (8460220080), and importers should assess Section 301 exposure based on the declared country of origin. The centerless configuration is a key classification criterion distinguishing these machines from other cylindrical grinders under heading 846023.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
2 import shipments a month
The defining feature is the workpiece support method: centerless grinders hold the part between a grinding wheel and a regulating wheel without using centers or chucks. Machines that grip the workpiece between centers or in a chuck are classified as cylindrical grinders under 846023, not as centerless grinders under 846022. Technical drawings or manufacturer specifications confirming the support mechanism are the key supporting documents.
Yes. The US schedule assigns separate 10-digit lines to used or rebuilt machines (8460220040) and new machines (8460220080), and duty rates may differ between them. Accurate condition declaration, supported by documentation such as prior ownership records or refurbishment invoices, is required at entry.
Subheading 10 of 10 in heading 8460
Subheading 846022 · $422K of $104.9M
ImportsExports
Imports
$422KYoY · free account
Exports
$303KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $8.5M of Centerless Grinding Machines, Numerically Controlled and exported $12.3M.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
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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 |
|---|---|---|---|---|---|
| 8460220080 | Centerless Grind Mach, Num Controlled, New | $422K | 10.00% | 100.00% | $42K |
| 8460220040 | Centerless Grind Machines, Num Control, Used/Rebult | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8460220040 | Centerless Grind Machines, Num Control, Used/Rebult | $207K |
| 8460220080 | Centerless Grind Mach, Num Controlled, New | $96K |
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.
Imports · August 2026
origin
Taiwan and France together supply 100% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 10.00% of imports for consumption.