Silicon Nitride Ceramic Roller Bearings from China
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, classifying them under 6909.19.90 as other ceramic wares for technical uses.
Duty Rate — China → Canada
4.5%
Import Tips
• Confirm the rollers are fired after shaping and not just hot-pressed, as Chapter 69 requires firing
• Provide technical data on the chemical pump or centrifuge application to support classification
• Check if the rollers are part of a complete bearing that might be classified under heading 8482