Industrial jewels including sapphire have superior abrasion resistance, a low friction coefficient, and little heat variation, making them an optimal component for the instruments that require stable measurement over a long period of time.
Many bearings made from jewels or ceramics are used for the bearing mechanisms of various measurement instruments; sapphire, ruby, ceramic, zirconia, etc. are selected according to the applicationin.
For example, electric meters in which sapphire jewel bearings are used are maintenance-free for ten years.
Adamant Namiki has been manufacturing jewel bearings since its foundation, and they are a key part of the measurement instruments used in essential utilities, such as electricity and water meters, that support our daily lives.