What Are Hybrid Ceramic Ball Bearings

Ordinary rolling bearings are composed of rings, rolling elements, retainers, grease, and seals. When the rolling elements are made of ceramic materials, the rolling bearings are defined as hybrid ceramic ball bearings. Comparison of the properties of four bearing materials: ordinary bearing steel AISI52100 (GCr15), stainless steel AISI440 (9Cr18), silicon nitride (Si3N4) and zirconia (ZrO2). Incomparably excellent performance, high temperature resistance, super strength, etc. are leading in the world of new materials. In the past ten years,In the past ten years, it has been widely used in various fields in the world.

Ceramic bearings have the characteristics of high temperature resistance, cold resistance, wear resistance, corrosion resistance, anti-magnetic and electrical insulation, oil-free self-lubrication, high speed and so on. It can be used in extremely harsh environments and special working conditions, and can be widely used in aviation, aerospace, navigation, petroleum, chemical industry, automobiles, electronic equipment, metallurgy, electric power, textiles, pumps, medical equipment, scientific research and national defense military and other fields. High-tech products with new material application.

Hybrid Ceramic ball bearings are a new type of bearings widely used in the industrial field of engineering ceramics. Today we will learn about the advantages and main properties of ceramic ball bearings:

Advantages of Hybrid Ceramic Ball Bearings

(1) High temperature resistance

Ceramic balls are heat-resistant and have a small expansion coefficient. In high-temperature environments, the bearing balls will not expand due to temperature, which greatly increases the service temperature of the entire bearing. The temperature of ordinary bearings is about 160 degrees, and that of ceramic balls can reach 220 degrees. above.

(2) High speed

Ceramic balls have oil-free self-lubricating properties, and the friction coefficient of ceramic balls is small, so ceramic ball bearings have a high speed. According to statistics, the speed of bearings using ceramic balls is more than 1.5 times that of ordinary bearings.

3) Long life

Ceramic balls do not need to add any grease, that is to say, even if the grease is dry, the bearing can still run, thus avoiding the premature bearing damage caused by the dry grease in ordinary bearings. According to actual use data, the service life of bearings using ceramic balls is 2-3 times that of ordinary bearings.

(4) Insulation

The last point is also the most important point - insulation, bearings using ceramic balls can insulate the inner and outer rings of the bearing, because ceramic balls are insulators, using ceramic balls between the inner and outer rings of the bearing can achieve the effect of insulation.

Performance of Hybrid ceramic ball bearings

Because the ceramic ball itself has self-lubricating properties, it can be operated according to specific requirements during use, and grease can be used or not. Seals and retainers can also be used according to the requirements of use, but rings and rolling elements are indispensable elements of Hybrid ceramic ball bearings. Common ceramic ball materials are zirconia (ZRO2) and silicon nitride (SI3N4); commonly used ferrule materials are bearing steel (GCR1), stainless steel (440, 440C) and stainless steel (304, 316, 316L). According to the use environment, speed, load, temperature, and requirements during use, the rings and rolling elements of Hybrid ceramic ball bearings can be combined with the above materials to achieve different use effects. When two different materials are used for the rings and rolling elements, there is a hybrid bearing (Hybrid bearing). When the rolling element is made of ceramic material, it is defined as a hybrid ceramic ball bearing (Hybrid ceramic ball bearing). In high-speed precision bearings, hybrid ceramic ball bearings are the most widely used, that is, the rolling elements use hot-pressed SI3N4 ceramic balls, and the bearing rings are still steel rings. This kind of bearing has a high degree of standardization, and it is easy to maintain with little change to the structure of the machine tool, and is especially suitable for high-speed operation occasions. The high-speed electric spindle assembled by it has the advantages of high speed, high rigidity, high power and long life.

Hybrid Ceramic ball bearings are widely used in the industrial field. The problems that need to be paid attention to when using ceramic bearings and Hybrid ceramic ball bearings of different materials and structures are also different. Specific precautions for use can be consulted before purchasing. As a professional Hybrid Ceramic bearing manufacturer, to provide you with professional products and services.