Harmonized System
U.S. imports of Grinding Machines for Removing Metal (Non-Flat-Surface, Axis Accuracy ≥ 0.01 mm, Not Numerically Controlled) (HS 846029) totaled $3.6M in August 2026, imported from 23 countries.
Importers of Grinding Machines for Removing Metal (Non-Flat-Surface, Axis Accuracy ≥ 0.01 mm, Not Numerically Controlled) paid $245K in duties in August 2026, an average duty rate of 6.79% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Grinding Machines for Removing Metal (Non-Flat-Surface, Axis Accuracy ≥ 0.01 mm, Not Numerically Controlled) imports of $3.6M in August 2026 ran 95% above the year-to-date monthly average of $1.8M.
Last updated: August 2026 dataConventional (non-NC) cylindrical and profile grinding machines with axis accuracy of 0.01 mm or better occupy a specialized niche in toolrooms and maintenance facilities where operator skill substitutes for programmed control. Italy and the United Kingdom are the leading US import sources for this category, with Germany also a significant supplier. The US schedule provides four 10-digit lines: used/rebuilt machines (8460290105), new external cylindrical including universal types (8460290110), new internal cylindrical machines (8460290130), and other new machines meeting the accuracy threshold (8460290150). As with the non-NC flat-surface heading, the absence of numerical control — not merely the absence of CNC — is the governing classification criterion.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
34 import shipments a month
Rebuilt machines are classified under 8460290105, the used/rebuilt line. 'Rebuilt' is treated equivalently to 'used' for tariff purposes under this heading, so a machine that has been substantially refurbished but not manufactured new should be declared accordingly, supported by documentation of the rebuild process and prior service history.
The manufacturer's published specifications or a calibration certificate from an accredited metrology lab are the standard evidence. If the machine's rated accuracy is coarser than 0.01 mm, it would not qualify for this heading and would need to be classified elsewhere in Chapter 84. Customs may request technical documentation at entry to confirm the accuracy rating.
ImportsExports
Imports
$3.6MYoY · free account
Exports
$238KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $21.8M of Grinding Machines for Removing Metal (Non-Flat-Surface, Axis Accuracy ≥ 0.01 mm, Not Numerically Controlled) and exported $13.2M.
Through August 2026. Source: U.S. Census Bureau.
Subheading 5 of 10 in heading 8460
Subheading 846029 · $3.6M of $104.9M
Trade Directory
List your company under HS 846029 — Grinding Machines for Removing Metal (Non-Flat-Surface, Axis Accuracy ≥ 0.01 mm, Not Numerically Controlled), so the companies trading it can find you. Be the first supplier listed.
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 |
|---|---|---|---|---|---|
| 8460290150 | Grinding Mach, Metal Remov, Accur 0.01 Mm, NESOI | $2.2M | 8.55% | 85.04% | $185K |
| 8460290130 | Grind Mac, Intern Cyl, Mtl Remov, Except N/C, New | $1.3M | 3.39% | 100.00% | $43K |
| 8460290110 | Grind Mac, Extern Cyl, Inc Univ, Mtl Remov, Ex N/C, New | $130K | 10.00% | 100.00% | $13K |
| 8460290105 | Grin Ma Ex Flt Sur, Mtl Remov, Acc0.01mm, Ex N/C, Used | $38K | 10.00% | 100.00% | $4K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
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
Germany and Japan together supply 70% of it. Germany pays 10.0% duty; Japan 0.0%.
customs district
destination
entry
rate provision · imports
9.0% enters free of duty; duty collected equals 6.79% of imports for consumption.