Silicon Nitride Ceramic Roller Bearings from Germany
Silicon nitride ceramic rollers for high-speed technical applications in chemical pumps and lab centrifuges. These fired ceramic components provide superior wear resistance and thermal stability in harsh environments. HTS 6909.19.50.10 covers them as ceramic wares for chemical or technical uses.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Include ASTM C373 water absorption test results to confirm ceramic body meets technical ware standards
• Document end-use in laboratory or chemical processing to justify technical classification over general machinery
• Check for cermet content; if metallic binders exceed limits, may shift to heading 8113