💾 Data Updated: Latest version • Last updated: December 09, 2025

9031.90.91.30 - Of machines for balancing mechanical parts 🖩

Details

FieldValue
Unit of Quantitykg
General Rate of Duty (Column 1 - General)Free
Special Rate of Duty (Column 1 - Special)N/A
Column 2 Rate of Duty40%
Quota QuantityN/A
Additional DutiesN/A
About Duty Rates: Rates are divided into Column 1 and Column 2. Column 1 is subdivided into General (normal trade relations rates for all countries not eligible for special programs) and Special (preferential rates for countries with free trade agreements or preference programs). Column 2 rates apply to products from Cuba, North Korea, Belarus, and Russia. When no special rate exists for a classification, General rates apply.

Overview

This HTS subcategory, 9031.90.91.30, specifically covers parts and accessories designed for machines used in the balancing of mechanical parts. This encompasses components and attachments intended to facilitate or enhance the process of identifying and correcting imbalances in rotating machinery. Examples might include specialized sensors, calibration weights, drive mechanisms, or control elements integral to balancing equipment.

When classifying within the broader category of "Other" parts and accessories for measuring or checking instruments, it is crucial to differentiate this subcategory. Unlike parts for test benches (9031.90.91.60), which are designed for the comprehensive testing of various machine functionalities, or other miscellaneous parts (9031.90.91.95), this classification is narrowly focused on the singular purpose of mechanical part balancing. The defining characteristic is the direct application to the detection and correction of rotational imbalances.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, classification under 9031.90.91.30 relies on the explicit design and intended use of the part or accessory. If a component's primary function is to be incorporated into or used with a machine specifically for balancing mechanical components, it falls within this classification. Conversely, general-purpose components or those used in broader testing or measurement applications would be classified elsewhere.

Frequently Asked Questions

›What is HTS code 9031.90.91.30?
HTS code 9031.90.91.30 covers Of machines for balancing mechanical parts under the US Harmonized Tariff Schedule. It falls under Chapter 90: Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof.
›What products are classified under 9031.90.91.30?
This classification covers Of machines for balancing mechanical parts. It is a subcategory of Other (9031.90.91).
›What is the import duty rate for 9031.90.91.30?
The general rate of duty for HTS 9031.90.91.30 is Free. The Column 2 rate is 40%.
›What unit of quantity is used for 9031.90.91.30?
Imports under HTS 9031.90.91.30 are measured in kg.

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