Books and knowledge

SKF should according to the intersection of bearing and structure in device of bearing, size big and small and the intersection of bearing and common property of part make, the pressure should be added in having the terminal surface of one set of circles together closely directly, can't transmit the pressure through rolling the body, bearing device method: 1.It is common to heat Through heating the bearing or bearing seat, employ thermal expansion to jointly change into the loose and common device method closely. It is a kind of daily device method saving effort. It suitable for this law ...

The main trouble of the sliding bearing includes the following several respect: 1The tiling is corroded: Spectral analysis finds coloured metallic element is unusual in density; The inferior mm levels of a lot of nonferrous metals compositions appear to abrade the particle in the iron table; Lubricating oil moisture exceed standard and acid value exceed standard. 2The surface of the journal is corroded: Spectral analysis finds the iron element is unusual in density, there is one submicron of particles of a lot of iron compositions in the iron table, lubricating oil moisture exceed standard ...

First, know service condition of mechanical device and bearing,etc.: 1,Function and structure of machinery; 2,The bearing uses the position; 3,Bearing load ' Size, direction ; 4,Rotational speed; 5,Vibration, impact load; 6,Bearing temperature Environment temperature, Wen Sheng ; 7,Surrounding environment Corrosivity, cleaning, lubricating . Second, chosen bearing type and kind: 1,The size limits; 2,The bearing is loaded ' Size, direction, vibration, impact load ; 3,Rotational speed; 4,Bearing precision; 5,Rigidity; 6,Internal and external circles allow off-centre; 7,Rub the ...

1. The requirements of axle and shell Under the situation that axle, precision of outer cover are bad, the bearing is influenced by it, can't give play to necessary performance. For example installation block shoulder partly if precision good, will produce, and outer lane relatively slope. It is centralized to increase the stress except bearing load, make the fatigue life of bearing drop, more serious meeting leads to the fact that keeps the shelf damaged, frit. 2. The axle, shell cooperate with the bearing one The electrical machinery cooperates with public errand of the axle and generally ...

1.The material of the axle: There should be enough intensity at first, it is low to the centralized sensitiveness of the stress; Should also meet rigidity, wearability, be able to bear corrosivity and good processability. The commonly used material is mainly steel of carbon, alloy steel, nodular cast iron and high strength casting iron. While choosing the material of the axle, should consider loaded size and property that the axle receives, factors such as the shapes and size, production lot, important intensity, material mechanical performance and economy of level of rotational speed, ...

As to the sealed bearing, have already filled with appropriate lubricating grease during production; For setting up the seal installation in the host computer in the turning on use of bearing too, in order to avoid the leakage of lubricating grease. This have how much lubricating grease one inject into in bearing for fine problem. There is too little lipoprotein quantity of notes, it is apt to cause lacking the lipoprotein or do and rub, influence the life-span. Note the intersection of lipoprotein and quantity cross, at most can cause to leak in a large amount lubricating grease, pollute the ...

[The size of the bearing load of Chinese car bearing network bearing encyclopaedia ]: , in the inner circle contract of radial direction, and it expands in the circumference direction because of the radial load. The interference during assembly, so, may slightly drop. Reducing the interference, can be by the following formula ...

First, improve and smelt technology Improve cleanliness and homogeneity of the steel : Compared with industrially developed country, though the oxygen content of the Chinese bearing steel has already been close to foreign advanced stage, but the inclusion and carbide have very great disparity compared with foreign countries according to distribution homogeneity of the bearing size, composition homogeneity, such as larger inclusion and carbide more, basic composition irregularity form the black-and-white district etc., cause the bearing part quality inadequate natural endowment, has ...

The bearing is the accurate part, only some bearings are damaged in practical application. The reason why most bearings damage is numerous - -Go beyond load that estimate in advance originally, such as non- effective sealing, whom cooperation of high strung cause cross small the intersection of bearing and interval,etc.. Any factor in these factors will all have its special damaged pattern and will leave the special damaged trace. So, inspect and damage the bearing of the axle, can find it possible to lead the reason in most cases. By and large, have 1/3 bearing damage, lead because on tired ...

1.Sign JB/T 3574-1997 of the rolling bearing Roll the basic content of sign on bearing products, should generally include bearing code and factory's code or trade mark Two parts, can also increase the factory and subscriber common other signs approved if necessary. Can't separate ing type bearing: Should stamp basic contents shown on the terminal surface of circles. In order to distinguish the terminal surface of basis, allow to stamp the symbol sign of the craft in one set of circles is not the terminal surface of basis. Separating bearing: Basic content that should stamp the sign on one set ...