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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily bearings
Roller assemblies dominated by bearing function classify in Chapter 84 as bearings.
If for cranes of 8426
Similar rollers for crane undercarriages go under 8426 parts subheading.
If for mining rail haulage
Mining vehicle wheels/rollers classify with vehicles in Chapter 87.
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Import Tips & Compliance
• Include roller bearing specs and load ratings; ensure markings indicate TBM-specific gauge diameter; file binding ruling if multi-use claimed
Related Products 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.