Jewel/Ceramic/microcrystal/glass

Item No.: 5
Gemstone bearing is a kind of sliding bearing made of hard materials such as precious stones. A natural or synthetic gem (usually sapphire) can be used as a bearing for the rotating shaft of a meter head or for other precision instruments by carefully gri
Description
Gemstone bearing is mainly used in instruments. The bearing of instrument bears little load, but it needs high rotation precision, good sensitivity and long service life. Gemstone has small friction number, high hardness, corrosion resistance, small coefficient of thermal expansion, high compressive strength performance, can meet the requirements of instrument bearings. The materials used for making gem axes are corundum, agate, glass ceramics, etc. Corundum is the body of alumina, both natural and man-made. Natural corundum has many impurities and uneven texture, so artificial corundum is widely used