Zro2 - Materials - Technical
HES Products made from this material
Zirconia offers chemical and corrosion inertness to temperatures well above the melting point of aluminium oxide. Zirconia has low thermal conductivity. It is electrically conductive above 600oC. Bearings made from Zirconia can be run at extreme temperatures, even higher than that of Silicon Nitride, however the PTFE cage must be removed if temperature will exceed the max temperature for PTFE.
Zirconia bearings are only for slow speed applications, but will handle temperature and chemical resistance better than Silicon Nitride. They run smoothly without lubrication, which means nearly no maintenance is required. Full ceramic bearings are used in chemical, metallurgical, food, electronic and other industries.
|Poisson’s Ratio||0.23 to 0.31|
|Thermal Conductivity||W/m.oK||1.8 to 3.0oC|
|Coefficient of Thermal Expansion||10-6/oC||10.1|
|Max. use temperature (unloaded)||oC||1100|
|Electrical Resistivity||ohm/cm||2.2 x 1012 @ 500oC|
|Greases and Oils||Good|
Products made with Zirconia can be found in the Hobby and Engineering Supplies online catalogue.
You can purchase ZRo2 products in the Hobby and Engineering Supplies Ceramic ZRo2 Online Catalogue pages.
For a huge range of bearings online please visit the Bearing Shop Online Website.
The Small Parts and Bearings has a much larger range of engineering supplies.
For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.
Extra information for Technical - Materials
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