What kind of oil-free bearing mainly includes?

Bearing is a part of the machine driving process to fix and reduce the load conflict coefficient. Its primary function is to support the mechanical rotating body to reduce the mechanical load conflict coefficient of the equipment in the transmission process. According to the conflict nature of moving elements, bearings can be divided into two types: rolling bearing and sliding bearing.

Oil free bearing mainly includes gas smooth bearing, composite smooth bearing, water smooth bearing, etc.

1、 Gas smooth bearing:

Gas smooth bearing is a kind of sliding bearing with gas as a smooth agent. The most commonly used gas smoother is air, and nitrogen, argon, hydrogen, helium can be used as required. The mechanism of gas bearing film is the same as that of liquid smooth bearing.

The gas smooth bearing makes use of the gas transport f diffusion, viscosity and heat conductivity, adsorption and compressibility, so that it can form a good gas film between the conflict pairs and the action of hydrodynamic pressure effect, static pressure effect and kneading effect, which has the function of supporting load and reducing the impulse.

Gas smooth bearings are generally divided into three types: pneumatic bearing, gas static pressure bearing and gas kneading bearing. The smooth state of the actual bearing often exists in the form of dynamic, static, dynamic, kneading, static, static, kneading and mixing. The mechanism of gas bearing film is the same as that of liquid smooth bearing.

2、 Composite smooth bearing

Because of the requirements of special production process, some key equipment of industrial and mining enterprises are operating under extremely bad conditions. Because of heavy equipment, high ambient temperature, large dust or acid corrosion gas in air.

There are many problems in the smoothness of equipment, which is severe in conflict and wear. Most of them still use traditional oil and grease. In fact, these conditions have exceeded the scale of oil and grease smoothness. It is very easy to bite or bite the bearing and other conflict pairs, which causes severe parts wear and damage, and often leads to equipment shutdown.

The composite material used for composite smooth bearing is a new type of solid smooth material against extreme pressure, which is composed of metal base material and solid smooth agent paste embedded in holes or grooves of bottom material. In the process of conflict, metal substrate bears most of the load.

After conflict, the solid smooth agent in the hole or groove is transported or reversed to the conflict surface, which forms a smooth, strong and uniform covering solid transport film on the conflict surface, which greatly reduces the conflict wear. With the development of conflict, the embedded solid smooth agent is continuously supplied to the thrust surface, which ensures the excellent smoothness of the conflict pair during long-term operation.

3、 Water smooth bearing

Since the 1970s, oil resource crisis and people pay attention to environmental protection in recent years, the oil pressure transmission technology is facing severe challenges. The water-optic bearing has been gradually applied.

Water-optic sliding bearing takes water as smooth and working medium, which not only saves a lot of oil, but also prevents the pollution of traditional bearings with oil as smooth medium to the environment. Water is an aspiring smooth medium with its advantages of pollution-free, extensive history, safety and fire resistance.

It can also reduce the conflict, wear, vibration, noise, no power consumption and other key problems. Therefore, the research on water smooth bearing has important theoretical research and application value on improving mechanical efficiency and protecting environment.