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HSChapter 90
U.S. imports of balancing machines for mechanical parts (HS 903110) totaled $1.9M in April 2026, traded with 28 countries.
Importers of Balancing Machines for Mechanical Parts paid $284K in duties in April 2026 — an effective duty rate of 16% on $1.8M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataDynamic and static balancing machines — used to detect and correct mass imbalance in rotating components such as crankshafts, turbine rotors, driveshafts, and fan assemblies — enter under a single US tariff line (9031100000). These machines are capital equipment for automotive, aerospace, and industrial machinery manufacturing, where rotor imbalance causes vibration, bearing wear, and premature failure. Germany and Italy dominate US import supply, consistent with their global leadership in precision machine-tool manufacturing, with China and Japan also notable sources. Balancing machines are purely mechanical/metrology equipment and carry no mandatory admissibility agency review.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Wheel balancers used in tire service applications are generally classified under heading 9031 as balancing machines, but the specific subheading depends on their design and function. A machine purpose-built for balancing automotive wheels may fall under 9031100000 if it meets the 'balancing mechanical parts' description. However, some wheel balancers with integrated diagnostic or alignment functions may be classified differently. A binding ruling is advisable for high-volume imports of automotive service equipment.
Importers should retain the manufacturer's technical datasheet showing the machine's balancing method (static, dynamic, or both), maximum rotor weight and diameter, rotational speed range, and intended application. These specifications help CBP confirm classification and distinguish balancing machines from related equipment such as vibration analyzers or machine-tool testing apparatus.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 9031100000 | MACHINES FOR BALANCING MECHANICAL PARTS | $1.9M | 16.12% | $284K |
MACHINES FOR BALANCING MECHANICAL PARTS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9031100000 | MACHINES FOR BALANCING MECHANICAL PARTS | $6.1M |
MACHINES FOR BALANCING MECHANICAL PARTS
78.0K no
INSTR & APPL F MEDICAL SURGICAL DENTAL VET, NESOI
HS 901890
MED NEEDLES. NESOI, CATHERERS ETC AND PARTS ETC
HS 901839
ARTIFICIAL JOINTS & PARTS & ACCESSORIES THEROF,NES
HS 902139
ELECTRO-DIAGNOSTIC APPARATUS NESOI, AND PARTS ETC.
HS 901819
OZONE,OXYGEN,ETC THERAPY, RESPIRATION APPARATUS,PT
HS 901920
MEAS CHECKNG INSTRUMENT & MACH, NOT OPTICAL, NESOI
HS 903180
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEW YORK, NY | -- | $2.4M | +$2.4M |
| PORT HURON, MI | -- | $1.6M | +$1.6M |
| CHICAGO, IL | $146K | $271K | +$125K |