Other
Parts suitable for use solely or principally with the machinery of headings 8425 to 8430: > Of machinery of heading 8426, 8429 or 8430: > Other: > Other > Other: > Parts of coal or rock cutters and tunneling machinery: > Other: > Other
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 8431.49.90.34
Micro-TBM Cutter Insert
Miniature carbide insert for small-diameter micro tunnel boring machines used in utility tunneling under heading 8430. Designed for soft ground and rock up to 48" diameter. Part of 8431.49.90.34.
Rippershark Cutter Chain Link
Specialized link in cutter chain system for Rippershark-style rock cutting attachments on tunneling equipment of heading 8430. Includes pick retention features. Classified under 8431.49.90.34.
Hard Rock TBM Center Row Cutter
V-shaped twin-disc cutter for center row of hard rock tunnel boring machine cutterheads under heading 8430. Balances cutting loads in abrasive formations. Part of 8431.49.90.34 tunneling machinery.
Longwall Miner Roof Support Pick
Heavy pick for temporary roof support roadheaders in longwall coal mining systems of heading 8430. Clears strata above shearer path. Classified in 8431.49.90.34 as coal/rock cutter part.
Coal Plough Cutting Edge
Replaceable hardened steel edge for coal ploughs used in longwall mining systems under heading 8430. Profiles coal face while conveyor advances. Covered by 8431.49.90.34 as coal cutter part.
Tunneling Machine Cutter Bearing
Sealed heavy-duty roller bearing for mounting disc cutters on tunnel boring machine cutterheads under heading 8430. Rated for extreme shock loads and contamination. Part of 8431.49.90.34 tunneling parts.
Tungsten Carbide Tunneling Cutter Pick
A replaceable tungsten carbide tipped cutting pick designed specifically for rock cutters and tunnel boring machines in heading 8430. It features a forged steel shank with a brazed carbide insert for breaking hard rock formations during tunneling operations. Classified under 8431.49.90.34 as a part of coal or rock cutters and tunneling machinery.
Hydraulic Rock Breaker Chisel
A hardened steel chisel insert for hydraulic rock breakers mounted on tunneling machinery of heading 8430. Engineered to fracture coal seams and hard rock with high-impact hydraulic hammers. Falls under 8431.49.90.34 as a specialized part for rock cutters and tunneling equipment.
Tunnel Boring Machine Disc Cutter
Large diameter disc cutter ring with tungsten carbide edges for tunnel boring machines (TBMs) under heading 8430. Used to gouge and crush rock faces in underground tunneling projects. Classified in 8431.49.90.34 for parts of tunneling machinery.
Coal Shearer Drum with Picks
Rotating steel drum fitted with multiple cutter picks for longwall coal shearers classified under heading 8430. Designed for continuous mining of coal seams in underground operations. Part of 8431.49.90.34 as coal cutter components.
TBM Gauge Cutter Roller
Precision-engineered roller cutter for the outer gauge of tunnel boring machine cutterheads under heading 8430. Maintains tunnel diameter by cutting peripheral rock. Covered by 8431.49.90.34 for tunneling machinery parts.
Roadheader Pick Holder Block
Forged steel block that securely holds cutter picks on roadheader boom arms for tunneling and mining machines of heading 8430. Provides structural support during rock cutting. Classified under 8431.49.90.34 as tunneling part.
Continuous Miner Coal Cutter Tooth
Spiral helical tooth for cutter drums on continuous mining machines used in coal extraction under heading 8430. Optimized for shearing soft to medium coal. Part of 8431.49.90.34 coal cutter parts.
Boom-Mounted Tunneling Scraper
Heavy-duty scraper blade attachment for roadheader or TBM boom arms to clear loose rock cuttings in heading 8430 machinery. Features replaceable wear plates. Falls under 8431.49.90.34 as rock cutter accessory.
Rock Cutter Water Jet Nozzle
High-pressure sapphire or carbide nozzle for dust suppression and cutting assistance on rock cutters and tunnel boring machines of heading 8430. Precision-drilled for water jet delivery. Classified in 8431.49.90.34.