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Welcome to Dongguan many hardware Ceramics Co., Ltd., a manufacturer specializing in zirconia ceramics.

Ceramic dispensing valve ceramic plunger ceramic suction disc sucker

Specializing in alumina ceramic and zirconia ceramics processing and customization

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Dongguan many many hardware Ceramics Co., Ltd.
Contact: Mr. Han
Mobile phone: 13288886353
Tel: 0769-82926445
QQ:304871063
Mailbox: Duoxuduo2006@163.com
Website: bjyjpf.cn
Address: No. 6 Chuang Road, Shang Sha first industrial area, Changan Town, Dongguan.

technical information
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What is ceramic bearing?

Release time: 2020-03-31 11:18:32 browsing times:

 Ceramic sliding shaft.Jpg What is [ Ceramic bearing ?
     Bearings can be divided into three types: rolling bearings, sliding bearing And electromagnetic bearings.


Rolling bearing is a highly standardized mechanical part. It has a series of models of various sizes and specifications. It can meet the requirements of various mechanical bearings in a considerable range. Because the maintenance of rolling bearings is very simple, it has been widely applied.

The biggest feature of rolling bearing structure is that there is a rolling element between two rings with relative motion. Therefore, rolling bearing has the advantages of less friction coefficient, less power consumption and higher efficiency than sliding bearing.

It is common to say that rolling bearings are usually made up of four parts: outer ring, inner ring, rolling element and cage. In the past, they were usually made of alloy steel. In the middle of 1990s, ceramic rolling bearings were published. The trial shows that the ceramic rolling bearing has the following advantages:

First, because ceramics Almost no fear of corrosion. Ceramic rolling bearings It is suitable for working under harsh conditions full of corrosive media.

Second, because the density of ceramic rolling balls is lower than that of steel and the weight is much lighter, the centrifugal effect on the outer ring can be reduced by 40% when rotating, and the service life is greatly prolonged.

Third, the influence of thermal expansion and cold shrinkage of ceramics is smaller than that of steel. Therefore, when bearing clearance is constant, bearing can be allowed to work in an environment with more severe temperature difference.

Fourth, because the modulus of elasticity of ceramics is higher than that of steel, it is not easy to deform under stress, so it is helpful to improve working speed and achieve higher accuracy.

Ceramic roller bearings with solid lubricants at high temperatures have been developed abroad, and rolling bearings or all ceramic rolling bearings combined with special steel and ceramics lubricated by liquid or grease.

As for manufacturing materials for ceramic rolling bearings, silicon nitride ceramics are mainly used. According to relevant information, the two emerging stars in modern ceramics, silicon nitride and silicon carbide, have amazing high temperature resistance. Silicon nitride ceramics at 1400 degrees Celsius, silicon carbide ceramics at 1700 degrees Celsius, the intensity is still as high as 7000 kilograms per square centimeter, and most metals have softened or melted into liquid at that time.
Source: Http://bjyjpf.cn
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