Parts
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
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]
Subheadings
Products classified under HTS 8474.90.00
Rod Mill Shell Lifters
Profiled lifter bars bolted inside rod mill shells to lift grinding media and ore for cascading action during mineral grinding. These parts optimize charge motion in wet or dry mineral processing. Classified as grinding machinery parts in HTS 8474.90.00.
Cone Crusher Mantle Bowls
Manganese steel bowl liners and mantles for cone crushers that provide secondary/tertiary crushing of mineral ores through compression. These precision-machined parts form the working surfaces. Parts of ore crushing machines under HTS 8474.90.00.
Jaw Crusher Wear Plates
High-manganese steel plates designed to line the jaws of primary jaw crushers used in mining operations for crushing ore. These parts are essential for protecting the crusher frame from abrasive mineral wear during grinding and crushing processes. Classified under HTS 8474.90.00 as parts of machinery for crushing ores and mineral substances.
Vibrating Screen Deck Panels
Polyurethane or rubber screen panels fitted into vibrating screens for separating aggregates and ores by size in mineral processing plants. These replaceable parts endure high abrasion from solid mineral flows during screening operations. Falls under HTS 8474.90.00 as parts of mineral screening machinery.
Ball Mill Liner Segments
Bolted high-chrome cast iron liners that line the interior of ball mills for grinding mineral ores into fine powder. These sacrificial parts protect the mill shell and enhance grinding efficiency in mineral processing. HTS 8474.90.00 covers parts of grinding machinery for mineral substances.
Gyratory Crusher Mantle and Concave
Matched mantle (convex) and concave (concave ring) liners for gyratory crushers that process hard rock ores in primary crushing stages. Made from hard-faced alloys, these parts create the crushing chamber. Classified as parts of ore crushing machinery under HTS 8474.90.00.
Sand Classifier Screw Conveyor
Helical screw conveyor blades and shafts for spiral classifiers that separate sand from fines in aggregate washing operations. These parts agitate and transport mineral slurries during classification. HTS 8474.90.00 includes parts for mineral washing/separating machinery.
Impact Crusher Blow Bars
Replaceable manganese steel blow bars mounted in impact crushers to shatter aggregates and ores through high-velocity impacts. These wear parts are critical for the crushing action on solid mineral substances. Parts of crushing machinery under HTS 8474.90.00.
Aggregate Washing Plant Pump Impellers
Abrasion-resistant impellers for slurry pumps in mineral washing plants that handle sand, gravel, and water mixtures. These parts are integral to washing machinery for cleaning earth/stone. HTS 8474.90.00 for parts of mineral washing equipment.
Mineral Jig Diaphragm Assemblies
Rubber diaphragm and frame assemblies that pulse water through ore pulp in mineral jigs for gravity separation of heavy minerals from gangue. Essential for separating machinery operation. HTS 8474.90.00 parts for mineral separating equipment.
Grinding Mill Trunnion Bearings
Large split spherical roller bearings supporting trunnion ends of SAG and ball mills for ore grinding. These precision parts enable rotation under heavy mineral loads. Classified as parts of grinding machinery HTS 8474.90.00.
Screw Classifier Tank Liners
Polyurethane or ceramic liners for rake/spiral classifier tanks that protect against abrasion during mineral classification and dewatering. These wear parts line the settling zones. Parts of mineral separating/washing machinery under HTS 8474.90.00.
VSI Crusher Wear Tips
Tungsten carbide tipped wear blocks for Vertical Shaft Impact crushers that shape and crush aggregates through rock-on-rock impact. High-wear parts for fine mineral processing. HTS 8474.90.00 parts of crushing machinery.
Mixing Kneader Blades
Sigma or Z-blade rotors for batch kneaders mixing ceramic pastes, cement, or mineral powders into homogeneous masses. These profiled steel parts perform the kneading action. Parts of mineral kneading machinery HTS 8474.90.00.
Sand Mold Forming Rammer Heads
Interchangeable pneumatic rammer heads for compacting foundry sand into molds using machines for forming sand molds. Hardened steel or alloy construction withstands repetitive impacts. HTS 8474.90.00 parts of foundry mold forming machines.