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HSChapter 85
U.S. imports of parts for electric motors, generators, generating sets & rotary converters (HS 850300) totaled $292.9M in April 2026, traded with 70 countries.
Importers of Parts for Electric Motors, Generators, Generating Sets & Rotary Converters paid $47.1M in duties in April 2026 — an effective duty rate of 20% on $235.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Parts for Electric Motors, Generators, Generating Sets & Rotary Converters imports of $292.9M in April 2026 ran 12% below the year-to-date monthly average of $332.2M.
Last updated: April 2026 dataCommutators, stators, rotors, and other dedicated components for the motors and generators of headings 8501 and 8502 are classified here, with the US schedule subdividing by component type, power rating, and end-use application — including dedicated lines for aircraft generator stators and rotors (8503004500), wind-powered generating set parts (8503009570), and AC generator parts (8503009546). Japan and Germany lead US import supply, underscoring the precision-engineering demands of this parts category. Goods of Chinese origin in this heading warrant review for Section 301 applicability, as China is also a significant supplier.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US tariff schedule distinguishes stators and rotors by the power rating of the motor they serve. Those for motors under 18.65 watts have dedicated lines (8503003500 and 8503007500), while stators and rotors for heading 8501 goods above that threshold fall under 8503006500. Aircraft generator stators and rotors have their own line (8503004500) regardless of wattage. Correct classification requires knowing both the component type and the rated output of the parent machine.
Yes — 8503009570 covers parts of wind-powered generating sets classified in subheading 8502.31. To support this classification, importers typically provide technical documentation confirming the part is dedicated to wind turbine generators, such as engineering drawings, OEM part numbers, or a manufacturer's declaration. General-purpose parts that could serve multiple generator types may not qualify for this specific line.
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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 |
|---|---|---|---|---|
| 8503006500 | STATORS AND ROTORS FOR GOODS OF HEADING 8501,NESOI | $133.8M | 16.18% | $20.0M |
| 8503009520 | ELECTRIC MOTOR PARTS, NESOI | $60.7M | 25.61% | $9.4M |
| 8503009550 | GENERATOR PARTS, NESOI | $39.2M | 22.18% | $6.8M |
| 8503009580 | MACHINE PARTS FOR GOODS OF HEAD 8501&8502,NESOI | $30.7M | 28.93% | $7.2M |
| 8503009000 | GENERATOR PARTS SUITABLE FOR USE ON AIRCRAFT,NESOI | $8.9M | 12.42% | $989K |
| 8503009546 | GENERATOR PARTS FOR AC GENS IN 8501.64.0021 | $5.3M | 9.64% | $172K |
| 8503003500 | STATORS AND ROTORS FOR MTRS,LT 18.65W | $3.5M | 26.82% | $791K |
| 8503004500 | STATORS & ROTORS FOR GENERATORS FOR USE ON AIRCRFT | $3.5M | 10.60% | $163K |
| 8503009570 | PARTS OF WIND-POWERED GENERATING SETS IN 8502.31 | $2.9M | 37.42% | $798K |
| 8503002000 | COMMUTATORS FOR MACHINES IN HEADING 8501 OR 8502 | $2.4M | 17.85% | $365K |
| 8503007500 | ELECTRIC MOTOR PARTS FOR MOTORS UNDER 18.65, NESOI | $2.1M | 25.89% | $472K |
STATORS AND ROTORS FOR GOODS OF HEADING 8501,NESOI
ELECTRIC MOTOR PARTS, NESOI
GENERATOR PARTS, NESOI
MACHINE PARTS FOR GOODS OF HEAD 8501&8502,NESOI
GENERATOR PARTS SUITABLE FOR USE ON AIRCRAFT,NESOI
GENERATOR PARTS FOR AC GENS IN 8501.64.0021
STATORS AND ROTORS FOR MTRS,LT 18.65W
STATORS & ROTORS FOR GENERATORS FOR USE ON AIRCRFT
PARTS OF WIND-POWERED GENERATING SETS IN 8502.31
COMMUTATORS FOR MACHINES IN HEADING 8501 OR 8502
ELECTRIC MOTOR PARTS FOR MOTORS UNDER 18.65, NESOI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8503006060 | MACHINERY PARTS FOR USE IN HEADS 8501& 8502, NESOI | $45.8M |
| 8503005000 | ELECTRIC MOTOR PARTS OTHER THAN COMMUTATORS | $38.6M |
| 8503006040 | GENERATOR PARTS OTHER THAN COMMUTATORS | $30.4M |
| 8503002000 | COMMUTATORS FOR MACHINES IN HEADING 8501 OR 8502 | $4.8M |
MACHINERY PARTS FOR USE IN HEADS 8501& 8502, NESOI
1.8M no
ELECTRIC MOTOR PARTS OTHER THAN COMMUTATORS
3.7M no
GENERATOR PARTS OTHER THAN COMMUTATORS
665.1K kg
COMMUTATORS FOR MACHINES IN HEADING 8501 OR 8502
308.9K no
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $33.5M | $17.8M | -$15.6M |
| LOS ANGELES, CA | $49.4M | -- | -$49.4M |
| TACOMA, WA | $39.5M | -- | -$39.5M |