Of crushing or grinding machines
Machinery for sorting, screening, separating, washing, crushing, grinding, mixing or kneading earth, stone, ores or other mineral substances, in solid (including powder or paste) form; machinery for agglomerating, shaping or molding solid mineral fuels, ceramic paste, unhardened cements, plastering materials or other mineral products in powder or paste form; machines for forming foundry molds of sand; parts thereof: > Parts > Of crushing or grinding machines
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8474.90.00.20
Roll Crusher Tooth Segments
Segmented teeth for double roll crushers grip and crush coal, limestone, or other mineral ores in solid form for size reduction. Hardfaced for extended wear life. HTS 8474.90.0020 designates these as parts of grinding/crushing machines for mineral substances.
Grinding Mill Liner Plates
Rubber or steel liner plates for ball/rod mills protect the shell while grinding ores to fine powder in mineral processing plants. Wave or ribbed patterns enhance mineral cascading. Classified in HTS 8474.90.0020 for parts of grinding machines handling solid mineral substances.
Autogenous Grinding Mill Shell Lifters
Shell lifter bars in AG/SAG mills elevate ore charge for autogenous grinding of copper or gold ores using rocks as media. High-strength steel castings. Part of HTS 8474.90.0020 for large-scale mineral grinding machine parts.
Crusher Main Shaft Assemblies
Forged alloy main shafts with eccentric sleeves transmit gyratory motion in cone and gyratory crushers for ore crushing. Precision machined for bearing fits. HTS 8474.90.0020 covers these critical rotating parts of crushing machines.
Toggle Plate for Jaw Crushers
Toggle plates in jaw crushers convert pitman motion to crushing force while protecting against tramp iron in ore feeds. Manganese steel for impact absorption. Specific to HTS 8474.90.0020 as jaw crusher parts.
Pitman Assembly for Single Toggle Jaw Crusher
Pitman arms connect eccentric shaft to toggle in single toggle jaw crushers, providing the crushing stroke for stone and ore. Balanced counterweights reduce vibration. HTS 8474.90.0020 for these articulated crushing parts.
Flywheel for Cone Crusher Mainshaft
Heavy cast iron flywheels store rotational energy to maintain crushing momentum during ore processing in cone crushers. Precision machined hubs fit mainshafts. Part of HTS 8474.90.0020 crushing machine components.
Wafer Crystal Grinder Abrasive Wheels
Diamond-impregnated grinding wheels for crystal grinders that shape semiconductor boules to precise diameters before wafer slicing, as defined in statistical notes for semiconductor processing. Used on silicon or gallium arsenide crystals. HTS 8474.90.0020 includes these as parts of grinding machines for mineral substances like semiconductor crystals.
Jaw Crusher Manganese Wear Plates
These high-manganese steel wear plates are replacement parts for jaw crushers used in mining and aggregate processing to crush rocks and ores. They line the crushing chamber to withstand abrasive impacts from mineral substances. Classified under HTS 8474.90.0020 as parts specifically of crushing machines for earth, stone, or ores.
Cone Crusher Mantle Liners
Mantle liners for cone crushers are contoured wear parts made from chrome-moly alloys that protect the inner cone during ore and stone crushing operations. They provide the crushing surface in secondary and tertiary stages of mineral processing. Fits HTS 8474.90.0020 as dedicated parts of crushing machines for solid mineral substances.
Impact Crusher Blow Bars
High-chrome blow bars are hammer-like parts that strike and shatter stone or ore in horizontal shaft impact crushers for aggregates. They endure high-impact abrasion from mineral crushing. HTS 8474.90.0020 covers these as parts of crushing machines handling solid earth or ores.
Gyratory Crusher Concave Segments
Concave segments line the fixed crushing chamber in gyratory crushers, grinding ores like copper or iron through compressive forces on solid mineral substances. Made from abrasion-resistant alloys. Precisely classified in HTS 8474.90.0020 for parts of ore crushing machines.
VSI Crusher Anvil Rings
Anvil rings in Vertical Shaft Impact (VSI) crushers serve as stationary targets for rock-on-rock crushing of aggregates and minerals. Typically tungsten carbide tipped for abrasion resistance. Covered by HTS 8474.90.0020 as parts of high-speed crushing machines.
Hammermill Breaker Plates
Perforated breaker plates in hammermills regulate particle size during grinding of ores, limestone, or biomass minerals. Impact-resistant with precise hole patterns. HTS 8474.90.0020 includes these as parts of mineral grinding/crushing apparatus.
Raymond Mill Grinding Rollers
Rotating grinding rollers in Raymond pendulum mills crush and grind coal, limestone, or phosphate rock against a bullring. Hardfaced for mineral abrasion resistance. HTS 8474.90.0020 applies to these vertical grinding machine parts.