Zirconia Toughened Alumina Bearing Balls from Japan
Zirconia toughened alumina (ZTA) ceramic bearing balls, fired for enhanced fracture toughness, are used in high-load technical bearings within laboratory stirrers. Their composite ceramic composition provides superior chemical resistance and durability in demanding laboratory environments. This product qualifies under tariff item 6909.19.90 as ceramic ware for laboratory or other technical uses.
Duty Rate — Japan → Canada
4.5%
Import Tips
• Ensure the bearing balls are fired after shaping and not merely dried, as Chapter 69 requires firing for classification
• Declare the specific ceramic composition (zirconia toughened alumina) to support the technical use classification
• Keep documentation of the intended laboratory application in case CBSA requests verification