U.S. imports of grinding & polishing machines for stone, ceramics & glass (HS 846420) totaled $6.0M in August 2026, imported from 29 countries.
Importers of Grinding & Polishing Machines for Stone, Ceramics & Glass paid $595K in duties in August 2026, an effective tariff rate of 9.94% of the $6.0M imported — duty actually collected as a share of that value, not the published tariff schedule. Grinding & Polishing Machines for Stone, Ceramics & Glass imports of $6.0M in August 2026 ran 13% above the year-to-date monthly average of $5.3M.
Last updated: August 2026 dataItalian and German manufacturers dominate US imports of these precision machines, which split at the 10-digit level into glass-working grinding/polishing equipment (8464200110) and machines for mineral materials such as stone, ceramics, concrete, and asbestos-cement (8464200120). The glass-working lines serve architectural, automotive, and optical fabrication sectors, while the mineral-materials lines are central to countertop, tile, and precast concrete production. Imports from China are subject to Section 301 tariffs, a key cost consideration when sourcing the mineral-materials variant from that origin.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
119 shipments/mo
The HTS splits the heading at the 10-digit level: 8464200110 covers grinding or polishing machines specifically for cold working glass, while 8464200120 covers equivalent machines for stone, ceramics, concrete, and like mineral materials. The intended workpiece material — not the machine's mechanical design — drives the classification, so importers should document the machine's rated application and any manufacturer specifications that confirm the substrate.
Yes. Grinding and polishing machines for stone, ceramics, and glass originating in China are generally subject to Section 301 tariffs. Importers should verify the applicable list and any granted exclusions with a licensed customs broker before entry, as coverage and exclusion status can change.
HSChapter 84
Subheading 3 of 3 in heading 8464
Subheading 846420 · $6.0M of $26.3M
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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 |
|---|---|---|---|---|---|
| 8464200120 | Grinding or Polishing Machines for Mineral Matl | $3.9M | 9.18% | 97.38% | $361K |
| 8464200110 | Glass-Working Grinding or Polishing Machines | $2.0M | 11.40% | 99.04% | $234K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8464200110 | Glass-Working Grinding or Polishing Machines | $5.5M |
| 8464200120 | Grinding or Polishing Machines for Mineral Matl | $1.6M |
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.
ImportsExports
Imports
$6.0MYoY · free account
Exports
$7.0MYoY · free account
12-mo low · imports
YoY · free accountOver the twelve months to August 2026, the U.S. imported $68.2M of Grinding & Polishing Machines for Stone, Ceramics & Glass.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Switzerland and Austria together supply 42% of it. China pays 39.5% duty; Switzerland 0.3%.
customs district
destination
entry
rate provision · imports
0.8% enters free of duty; duty collected equals 9.94% of total import value.