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HSChapter 84
U.S. imports of other cylindrical grinding machines, numerically controlled (HS 846023) totaled $12.4M in April 2026, traded with 11 countries.
Importers of Other Cylindrical Grinding Machines, Numerically Controlled paid $1.9M in duties in April 2026 — an effective duty rate of 15% on $12.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataNumerically controlled cylindrical grinders — covering internal, external, and universal configurations other than centerless — are precision workhorses for aerospace engine components, hydraulic cylinders, and transmission shafts. Switzerland and Germany dominate US imports of these machines, a pattern consistent with the high-tolerance requirements of the industries they serve. The US schedule provides five 10-digit lines under this heading, distinguishing used machines (8460230040), new internal cylindrical grinders (8460230055), new external/universal cylindrical grinders (8460230065), and additional new machine categories (8460230075, 8460230080). Correct line selection requires identifying both the grinding geometry (internal vs. external) and the machine's condition.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Manufacturer technical specifications, machine drawings, and sales literature that clearly identify the spindle orientation and workpiece geometry are the standard supporting documents. Internal cylindrical grinders (8460230055) are configured to grind bores and internal surfaces, while external/universal machines (8460230065) grind outside diameters. A universal machine capable of both operations is classified with external cylindrical grinders under 8460230065.
Both countries have long-established precision machine-tool industries with deep expertise in high-tolerance cylindrical grinding, particularly for aerospace and automotive drivetrain applications. The technical specifications demanded by US end-users in those sectors — sub-micron roundness tolerances, thermal stability, and advanced NC control integration — align closely with the product lines that Swiss and German manufacturers have developed over decades.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| SPAIN | $4.2M | -- | -$4.2M |
| SWITZERLAND | $2.8M | -- | -$2.8M |
| GERMANY | $2.6M | -- | -$2.6M |
| ITALY | $1.3M | -- | -$1.3M |
| JAPAN | $750K | $66K | -$684K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8460230055 | OTH CYLIN GRIND MACH,NUM CTRL NEW,INTERNAL CYLIN | $8.7M | 15.39% | $1.3M |
| 8460230075 | OTH CYLINDRICAL GRIND MACHINES, NUM CTRL, NEW, NES | $3.0M | 14.40% | $430K |
| 8460230040 | OTHER CYLINDRICAL GRIND MACH, NUM CONTROLLED,USED | $750K | 14.40% | $108K |
| 8460230065 | OTH CYLIN GRIND MACH,NUM CTRL NEW,EXT CYL,INCL UNV | $0 | -- | -- |
| 8460230080 | OTHER CYLINDRICAL GRIND MACHINES, NUM CONTRL, NEW | $0 | -- | -- |
OTH CYLIN GRIND MACH,NUM CTRL NEW,INTERNAL CYLIN
OTH CYLINDRICAL GRIND MACHINES, NUM CTRL, NEW, NES
OTHER CYLINDRICAL GRIND MACH, NUM CONTROLLED,USED
OTH CYLIN GRIND MACH,NUM CTRL NEW,EXT CYL,INCL UNV
OTHER CYLINDRICAL GRIND MACHINES, NUM CONTRL, NEW
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8460230080 | OTHER CYLINDRICAL GRIND MACHINES, NUM CONTRL, NEW | $540K |
| 8460230040 | OTHER CYLINDRICAL GRIND MACH, NUM CONTROLLED,USED | $86K |
OTHER CYLINDRICAL GRIND MACHINES, NUM CONTRL, NEW
1 no
OTHER CYLINDRICAL GRIND MACH, NUM CONTROLLED,USED
8 no
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 |
|---|---|---|---|
| Indiana | $6.4M | $57K | -$6.4M |
| California | $2.2M | -- | -$2.2M |
| Florida | $1.3M | -- | -$1.3M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BALTIMORE, MD | $8.2M | -- | -$8.2M |
| NORFOLK-NEWPORT NEWS, VA | $1.7M | -- | -$1.7M |
| LOS ANGELES, CA | $1.1M | $57K | -$1.1M |