Nuclear Reactors, Boilers, Machinery · 4 pending regulations · 10 court cases · $857.5M monthly imports · 100% from 1 countries · Updated daily from USITC
General
Free
Special
Free
Column 2
Free
Trade Agreement Eligibility
Monthly Imports
$857.5M
2026-01
Trade Concentration
100%
from top 3 of 1 origins
Regulatory Pressure
HIGH
0 rulings — · 4 reg · 8 CIT, 2 CAFC
Global Rates
🇺🇸 Free
🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A
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Data compiled from USITC HTS, US Census Bureau, Federal Register, CourtListener, Regulations.gov · As of 2026-04-29 · Updates monthly
This code has elevated regulatory activity — 0 CBP rulings (0 in last 2 years, trend: stable), 4 pending Federal Register actions, and 10 CIT/CAFC cases.
100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.
This is a high-volume import code — $858M in monthly US imports. Duty rate changes or trade remedy actions on this code have significant economic impact.
List 1 — ~$34B of Chinese goods (machinery, electronics, industrial components)
Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.
Effective 2018-07-06
These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →
Verify scope before relying on a deposit rate
Scope-to-HTS matching is keyword-based and may include orders whose actual scope excludes this code. Verify scope on the linked Federal Register notice before relying on a deposit rate. Per-respondent cash deposit rates are not yet indexed; click through for the rate table.
Tapered Roller Bearings and Parts Thereof, Finished or Unfinished
Source: ITA Opportunity to Request Administrative Review notices (Federal Register). Ground truth: access.trade.gov.
| Code | Description | Rate |
|---|---|---|
| 8483.10 | Transmission shafts (including camshafts and crankshafts) and cranks: | — |
| 8483.10.10 | Designed for use solely or principally with spark-ignition internal combustion piston engines or rotary engines | 2.5% |
| 8483.10.10.10 | For motorcycles | — |
| 8483.10.10.30 | Other | — |
| 8483.10.10.50 | Other | — |
| 8483.10.30 | Other | 2.5% |
| 8483.10.30.10 | For vehicles of chapter 87 | — |
| 8483.10.30.50 | Other | — |
| 8483.10.50.00 | Other transmission shafts and cranks | Free |
| 8483.20 | Housed bearings, incorporating ball or roller bearings: | — |
| 8483.20.40 | Flange, take-up, cartridge and hanger units | 4.5% |
| 8483.20.40.40 | Incorporating ball bearings | — |
| 8483.20.40.80 | Incorporating roller bearings | — |
| 8483.20.80 | Other | 4.5% |
| 8483.20.80.40 | Incorporating ball bearings | — |
| 8483.20.80.80 | Incorporating roller bearings | — |
| 8483.30 | Bearing housings; plain shaft bearings: | — |
| 8483.30.40 | Flange, take-up, cartridge and hanger units | 4.5% |
| 8483.30.40.40 | Ball or roller bearing type | — |
| 8483.30.40.80 | Other | — |
| 8483.30.80 | Other | 4.5% |
| 8483.30.80.20 | Ball or roller bearing type | — |
| 8483.30.80.40 | Other | — |
| 8483.30.80.55 | Rod end bearings | — |
| 8483.30.80.65 | Other | — |
| 8483.30.80.70 | Spherical | — |
| 8483.30.80.90 | Other | — |
| 8483.40 | Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately; ball or roller screws; gear boxes and other speed changers, including torque converters: | — |
| 8483.40.10.00 | Torque converters | Free |
| 8483.40.30 | Imported for use with machines for making cellulosic pulp, paper or paperboard | Free |
| 8483.40.30.40 | Fixed ratio speed changers | — |
| 8483.40.30.80 | Other | — |
| 8483.40.50 | Other | 2.5% |
| 8483.40.50.10 | Fixed ratio speed changers | — |
| 8483.40.50.20 | Gear boxes and speed changers for wind turbines, as described in statistical note 6 to this chapter | — |
| 8483.40.50.80 | Other | — |
| 8483.40.70.00 | Other speed changers | 25¢ each + 3.9% |
| 8483.40.80.00 | Ball or roller screws | 3.8% |
| 8483.40.90.00 | Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately | 2.5% |
| 8483.50 | Flywheels and pulleys, including pulley blocks: | — |
| 8483.50.40.00 | Gray-iron awning or tackle pulleys, not over <il>6.4 cm</il> in wheel diameter | 5.7% |
| 8483.50.60.00 | Flywheels | 2.8% |
| 8483.50.90 | Other | 2.8% |
| 8483.50.90.40 | Grooved pulleys | — |
| 8483.50.90.80 | Other | — |
| 8483.60 | Clutches and shaft couplings (including universal joints): | — |
| 8483.60.40 | Clutches and universal joints | 2.8% |
| 8483.60.40.40 | Clutches | — |
| 8483.60.40.80 | Universal joints | — |
| 8483.60.80.00 | Other | 2.8% |
| 8483.90 | Toothed wheels, chain sprockets and other transmission elements presented separately; parts: | — |
| 8483.90.10 | Chain sprockets and parts thereof | 2.8% |
| 8483.90.10.10 | Forged | — |
| 8483.90.10.50 | Other | — |
| 8483.90.20.00 | Parts of flange, take-up, cartridge and hanger units | 4.5% |
| 8483.90.30.00 | Other | 4.5% |
| 8483.90.50 | Parts of gearing, gear boxes and other speed changers | 2.5% |
| 8483.90.50.10 | Forged gear blanks | — |
| 8483.90.50.20 | Parts of gear boxes and speed changers for wind turbines | — |
| 8483.90.50.80 | Other | — |
| 8483.90.70.00 | Parts of articles of subheading 8483.20 | 5.5% |
| 8483.90.80 | Other | 2.8% |
| 8483.90.80.10 | Parts of articles of subheading 8483.60.80 | — |
| 8483.90.80.40 | Parts of universal joints | — |
| 8483.90.80.80 | Other | — |
Publication of a report.
Publication of a report.
Publication of a report.
Request for comments and notice of public hearing.
USTR regulatory documents related to this tariff code from Regulations.gov.
Exclusion Granted, Mi-T-M Corporation, Bushing, HTS 8483308090
Exclusion Denied, Taurus International Corporation, bracket support, HTS 8483908080
Exclusion Granted, Otis Elevator Co., Deflector or Idler Sheave, HTS 8483509040
Exclusion Granted, Otis Elevator Co., Deflector or Idler Sheave, HTS 8483509040
Exclusion Granted, Otis Elevator Co., Deflector or Idler Sheave, HTS 8483509040
Source: Regulations.gov
CAMSHAFTS AND CRANKSHAFTS FOR USE WITH SPARK-IGNITION INTERNAL COMBUSTION PISTON ENGINES OR ROTARY ENGINES, FOR VEHICLES OF CHAPTER 87
Census Bureau export classification matching this HTS import code.
