Engine is one of the important parts of a fighter. To judge whether a fighter is strong or not, its engine Engine Bearing performance is also one of the important indicators.
On the premise of powerful engine, the fighter can give full play to its advantages in other aspects, such as avionics system and firepower; Engine Bearing Otherwise, due to the weak engine performance, the fighter’s legs are much shorter than its opponent in combat.
In the complex engine structure, the engine bearing is the important and Engine Bearing core structure. It can be said that the whole structure of the engine is driven by the bearing; Therefore, the bearing is a “brain” that determines the engine performance.
Its manufacturing process is also exquisite; From the appearance, the bearing is just an ordinary “big iron rod”; However, this “big iron bar” Engine Bearing contains huge technical details; Such as structural strength, load capacity and transmission efficiency.
Among these properties, heat resistance is the top priority of the engine. If the bearing of an engine cannot withstand the high Engine Bearing temperature caused by severe friction under high-speed rotation, the stronger load capacity and lubrication are useless.
Among the Russian engines, Russia adopts the casting type, while the United States adopts the welding Engine Bearing type. Due to the reasons of material science and structural mechanics, the problem of high temperature resistance has not been solved in China.
It is almost impossible for ordinary countries to do so. Therefore, at Engine Bearing present, only a handful of countries in the world can independently produce fighter planes.
Moreover, the manufacturing of bearings not only needs the strong of materials, mechanics and production technology. It also requires many objective conditions, such as appropriate raw materials and excellent metal smelting capacity. Not only that,
the experimental process of the engine also needs to invest a lot of money, as well as excellent talents and equipment to carry out various types of tests. This kind of research with great investment will also cause a heavy burden for a country. Only the strength of China, the United States, Russia and Europe can do it.
Other countries can only rely on acquiring technology from these four powers.Therefore, if you want to have a powerful engine, you must have many preconditions. Strong materials science, precise and rigorous manufacturing technology and developed structural mechanics are indispensable.
In the process of mechanical maintenance, bearing maintenance has high requirements for installation. Since the bearing does not have obvious external characteristics in appearance, it can be installed in either forward or reverse direction, which is extremely easy to reverse installation.
In the process of bearing assembly, maintenance personnel are required to have a full understanding of the structure and installation requirements of the bearing, be familiar with the technical points, and install correctly according to the design requirements. The installation of tapered bearing includes “back-to-back” and “face-to-face” installation methods.
If the installation error will lead to axial movement and can not be adjusted; If there is a lack of understanding of the structure and installation of the bearing, it is easy to install reversely when facing the tight ring and loose ring of the plane bearing, resulting in the failure of normal operation after assembly and greater failure of mechanical equipment.
In the process of mechanical maintenance, fully understand the technical index information such as bearing code and model of the equipment, try to rotate the original model as much as possible, and avoid using alternative models.
In practical work, some equipment often replace bearings, and the replaced bearings are very easy to burn out, which is usually directly caused by the difference of bearing models, the use of substitute bearings and the quality defects of bearings themselves.