Ina imported bearing is one of the important parts of construction machinery. Poor installation will affect its use effect and even cause the failure of construction machinery. If there are iron filings, burrs, dust and other foreign matters in the bearing, the bearing will produce noise and vibration during operation, and even damage the raceway and rolling element. Therefore, before installing the bearing, it is necessary to ensure that the installation surface and installation environment are clean.
Lubrication has a very important impact on the operation and service life of ina imported bearings. Grease is made of base oil, thickener and additives. The performance of grease is mainly determined by base oil. Generally, low viscosity base oil is suitable for low temperature and high speed; High viscosity is suitable for high temperature and high load.
The water resistance of thickener determines the water resistance of grease. In principle, greases of different brands cannot be mixed, and even greases with the same thickener will have bad effects on each other due to different additives. The bearing surface is coated with antirust oil, which must be carefully cleaned with clean gasoline or kerosene, and then coated with clean high-quality or high-speed and high-temperature lubricating grease before installation and use. Totally enclosed bearings do not need to be cleaned and oiled.
if it is not carefully aligned, the alignment may cause the bearing to suffer additional load, friction and vibration. These may accelerate fatigue and reduce the service life of bearings, and may damage the service life of other machine parts. In addition, increased vibration and friction may greatly increase energy consumption and the risk of premature failure.
During use, the basic external conditions of bearing operation shall be monitored frequently, such as temperature, vibration and noise measurement. These regular inspections will identify potential problems as soon as possible, prevent unexpected machine suspension, realize production plans and improve plant productivity and efficiency.
During operation, the bearing requires correct re lubrication to perfect its performance. Ina imported bearing lubrication methods are divided into grease lubrication and oil lubrication. In order to make the bearing function well, first of all, choose the lubrication method suitable for use conditions and purposes. If only lubrication is considered, the lubricity of oil lubrication is dominant. However, grease lubrication has the advantage of simplifying the structure around the bearing.
Bearing for hydraulic pump the important component of plunger pump is bearing Reducing the negative pressure in the bearing is the basic requirement to prevent water from entering Load calculation of angular contact bearing The oil supply and maintenance of locomotive bearings is very important
rubber bearings, ceramic bearings, graphite bearings, PTFE and other polymer bearings. The bearing is used directly in water without any sealing device. The bearing is lubricated by water and does not need lubricating oil or grease, eliminating the harm of water pollution. Bearings are often used in flowing water, which can effectively control the bearing temperature rise, so as to have long service life, safety and reliability.
Structurally, it is suitable for horizontal axis, vertical axis and inclined axis. It is mainly used for large industrial water pumps, power plants, nuclear power plants, ships, water turbines, wind power generation, petrochemical industry, light chemical and food machinery, sewage treatment, waterworks, water conservancy pump stations, mining machinery and engineering machinery, valves, mixers and other fluid machinery. Working principle of water lubricated bearing:
Babbitt alloy used in early water lubricated bearings has long been used in the field of ships, because water can provide hydrodynamic film under certain conditions. Water lubricated bearings are based on self-lubricating materials and combined with the lubricity of water under certain conditions, so as to be used in hydropower stations and other fields. Water does not have the same high viscosity and lubricity as the recognized lubricant petroleum.
Water does have limited viscosity and density, so it can provide hydrodynamic membrane. The research and development of superior water lubricated bearings will be based on materials and design, which should have good self sliding and excellent friction resistance.