External cylindrical, including universal
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 of heading 8461: > Other grinding machines: > Other > Other: > External cylindrical, including universal
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 8460.29.01.10
Automotive Crankshaft Grinder
Machine for grinding external journals on automotive crankshafts, a metal cylindrical part. Classified in HTS 8460.29.0110 for external cylindrical grinding operations. Precision finishing with abrasives.
Hydraulic Universal Grinder
Hydraulically controlled universal grinder for external cylindrical metal parts. HTS 8460.29.0110 due to universal external capability.
Cermet Finishing Grinder
Grinder for cermet (ceramic-metal) cylindrical parts using abrasives. Explicitly under HTS 8460.29.0110 for cermets.
Silicon Ingot Diameter Grinder
For grinding silicon ingot diameters pre-slicing, per statistical notes.
High-Speed External Cylindrical Grinder
High RPM grinder for small precise external cylinders.
CNC External Cylindrical Grinder
A computer numerically controlled machine designed for precision grinding of external cylindrical surfaces on metal workpieces, such as shafts and rollers. It falls under HTS 8460.29.0110 as an external cylindrical grinding machine used in semiconductor wafer preparation equipment for grinding crystal boules to precise diameters. The machine employs grinding wheels to achieve high tolerances required for monocrystalline semiconductor materials.
Precision Shaft External Grinder
Specialized grinder for external surfaces of precision metal shafts used in machinery, including those for semiconductor equipment. It qualifies under HTS 8460.29.0110 for external cylindrical grinding with abrasives on metal. Achieves micron-level tolerances essential for boule grinders in wafer manufacturing.
Crystal Boule Grinder
Machine specifically for grinding semiconductor crystal boules (e.g., silicon) to exact diameters and flats per statistical notes for wafer preparation. Falls under HTS 8460.29.0110 as external cylindrical grinder using abrasives on semiconductor metal-like materials or cermets. Critical for Czochralski method crystals.
Heavy-Duty Roller Grinder
Industrial grinder for external cylindrical surfaces of large metal rollers and cylinders in manufacturing. HTS 8460.29.0110 covers this as external cylindrical type for finishing with grinding stones on metal. Applicable to semiconductor industry rollers.
Universal Cylindrical Grinder
A versatile machine capable of grinding both external and internal cylindrical surfaces on metal parts, including semiconductor crystal boules. Classified under HTS 8460.29.0110 as a universal external cylindrical grinder, it supports crystal grinding for precise flats indicating conductivity type. It uses abrasive wheels for finishing metal or cermets in high-precision applications.