Find HS Code and trade information for grinding device

Grinding Device

A grinding device is a tool used to reduce the size of a solid material by abrasion. This process, known as grinding, pulverizes, crushes, or cuts the material into smaller pieces. These devices employ a variety of mechanisms and abrasive materials to achieve particle size reduction for numerous applications.

Materials

Grinding devices are constructed from a range of materials depending on the application and the material being processed. Common materials include:

• Steel: Used for heavy-duty applications and general-purpose grinding.
• Cast Iron: Provides dampening and stability, often used for larger grinding wheels.
• Ceramics: Employed for specialized applications requiring high hardness and resistance to wear.
• High-Speed Steel (HSS): Used in tool grinding applications.
• Diamond: Utilized for grinding extremely hard materials like ceramics, glass, and stone.

The abrasive elements themselves can be:

• Aluminum Oxide: A common abrasive for general-purpose grinding, offering good toughness and cutting ability.
• Silicon Carbide: Harder than aluminum oxide, suitable for grinding harder materials like ceramics and non-ferrous metals.
• Diamond: The hardest known material, used for precision grinding and cutting extremely hard substances.
• Cubic Boron Nitride (CBN): Second hardest material, effective for grinding hardened steel and superalloys.

Purpose & Function

The primary purpose of a grinding device is size reduction. This is achieved through several mechanisms:

• Impact: The material is struck by rapidly moving grinding media.
• Attrition: Particles collide with each other and the grinding media, causing fracture.
• Compression: Material is crushed between grinding surfaces.
• Shear: Material is cut or sheared by the abrasive action.

The resulting particle size can range from coarse granules to fine powders, depending on the device and operating parameters.

Usage Scenarios

Grinding devices are used across a broad spectrum of industries:

• Manufacturing: Shaping metal parts, tool sharpening, deburring.
• Construction: Crushing stone, preparing aggregates.
• Mining: Comminution of ore for extraction.
• Food Processing: Grinding grains, spices, coffee beans.
• Pharmaceuticals: Milling active pharmaceutical ingredients (APIs).
• Chemicals: Particle size reduction for mixing and reactions.
• Ceramics & Glass: Shaping and finishing ceramic and glass components.
• Recycling: Processing waste materials.

Common Types

Several types of grinding devices are available, each suited to specific applications:

• Ball Mills: Utilize steel or ceramic balls to grind material through impact and attrition. Suitable for large-scale grinding of powders and granular materials.
• Hammer Mills: Employ rotating hammers to crush material against a stationary surface. Used for crushing relatively soft materials.
• Jet Mills: Utilize high-velocity air jets to collide particles, causing fracture. Produce very fine powders.
• Disc Grinders: Utilize a rotating abrasive disc for surface grinding, deburring, and cutting.
• Surface Grinders: Precision grinding of flat surfaces.
• Cylindrical Grinders: Grinding cylindrical parts.
• Cone Crushers: Used in mining and construction for crushing stone and rock.
• Rod Mills: Similar to ball mills, but use steel rods instead of balls.
• Vertical Roller Mills: Utilize rollers to crush and grind material.
• Spice Grinders: Small-scale grinders for household or commercial use.
• Coffee Grinders: Specialized grinders for coffee beans, employing burr or blade mechanisms.

The declared goods are described as a “grinding device”. This encompasses machinery used for deburring, sharpening, polishing, or finishing metal or cermets using grinding stones, abrasives, or polishing products. The specific classification depends on the device’s function and characteristics.

Here are relevant HS codes based on the provided reference material:

• 8460120040: This code covers machine tools for deburring, sharpening, grinding, honing, lapping, polishing, or otherwise finishing metal or cermets by means of grinding stones, abrasives or polishing products, other than gear cutting, gear grinding or gear finishing machines. Specifically, it applies to flat-surface grinding machines that are numerically controlled or used/rebuilt. The total tax rate is 59.4% (4.4% base tariff, 25.0% additional tariff, and 30.0% additional tariff after April 2, 2025).
• 8460390020: This code also covers machine tools for deburring, sharpening, grinding, honing, lapping, polishing, or otherwise finishing metal or cermets. However, it applies to sharpening (tool or cutter grinding) machines that are other types and valued under $3,025 each. The total tax rate is 59.4% (4.4% base tariff, 25.0% additional tariff, and 30.0% additional tariff after April 2, 2025).
• 6804224000: This code covers millstones, grindstones, grinding wheels and the like, without frameworks, for grinding, sharpening, polishing, trueing or cutting, hand sharpening or polishing stones, and parts thereof, of natural stone, of agglomerated natural or artificial abrasives, or of ceramics, with or without parts of other materials. Specifically, it applies to other millstones, grindstones, grinding wheels made of other agglomerated abrasives or of ceramics, and specifically abrasive wheels. The total tax rate is 55.0% (0.0% base tariff, 25.0% additional tariff, and 30.0% additional tariff after April 2, 2025).
• 6804226000: This code also covers millstones, grindstones, grinding wheels and the like, without frameworks, for grinding, sharpening, polishing, trueing or cutting, hand sharpening or polishing stones, and parts thereof, of natural stone, of agglomerated natural or artificial abrasives, or of ceramics, with or without parts of other materials. Specifically, it applies to other millstones, grindstones, grinding wheels made of other agglomerated abrasives or of ceramics, and specifically other types. The total tax rate is 55.0% (0.0% base tariff, 25.0% additional tariff, and 30.0% additional tariff after April 2, 2025).
• 8205100000: This code covers handtools (including glass cutters) not elsewhere specified or included; blow torches and similar self-contained torches; vises, clamps and the like, other than accessories for and parts of machine tools or water-jet cutting machines; anvils; portable forges; hand- or pedal-operated grinding wheels with frameworks; base metal parts thereof. Specifically, it applies to drilling, threading or tapping tools, and parts thereof. The total tax rate is 61.2% (6.2% base tariff, 25.0% additional tariff, and 30.0% additional tariff after April 2, 2025).

Please Note:

• The classification of the grinding device depends on its specific features and intended use.
• For HS code 8460120040 and 8460390020, the additional tariff will increase to 30.0% after April 2, 2025.
• HS code 8205100000 applies to hand tools, and it is important to determine if the grinding device falls into this category.