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SKF bearings is the geostationary ring and rotating ring of the SKF bearings are static and installation site (usually the SKF bearing) and rotating parts (usually axis) with consolidation, in order to achieve under rotating state transfer load and defining the basic task of motion system relative Yu Jing stop system location. The shaft and SKF bearings, SKF bearing rolling fixed in the radial, axial and tangential direction three position. Radial and tangential orientation through the tight fit of the SKF bearing mining, axial position only in a few cases the use of tight fit; general axial spacing parts, such as the end cap and retaining ring to limit the axial position in the context of clearance.
Selection should focus on the following 4 points:
1, SKF the circumferential surface of bearing rings should have good support and force uniform, in order to reduce the distortion, and give full play to the carrying capacity of the SKF bearing.
2, ring in the suit looks cannot slide along tangential direction, otherwise it will damage the mating surfaces.
3, must pay attention to the SKF bearing device and easy assembly and disassembly, time saving, spending.
4, the free end bearing must adapt to changes in the length of SKF and SKF axis and the bearing seat hole, must have the ability to adapt to the axial position within a certain range of swimming.
In the machinery industry, many kinds of imported bearings, but the use of imported bearing species in the radiator above is only a few:
1, a sleeve bearing (friction);
2, ball bearings (rolling friction);
3, the magnetic bearing;
4, the water bearing;
5, magnetic bearing;
6, rifle bearing etc.,
Magnetic bearing, magnetic bearing, water bearing, rifle bearing are also improved from the above two kinds of sleeve bearings and rolling bearings, working principle and no change.
Imported bearing now mainly use air-cooled radiator of ordinary oil import bearings and ball bearings.
Oil bearing
Oil imports the bearing sleeve bearing sliding friction is used, the use of oil as a lubricant and drag reduction agent, began to use low noise, low manufacture cost, but import bearing wear serious, life is a ball bearing is much lower. And this bearing is used for a long time, because of the reason of oil seal (computer radiator products may not use high-grade oil seal, the general is ordinary paper seal) lubricating oil will gradually volatile, dust will enter the imported bearings, causing the fan speed is reduced, increased noise and other issues, but also seriously because import bearing wear eccentric caused severe vibration caused by fan.
Ball bearing
Ball bearing changed friction imported bearing, the rolling friction, this way is more effective to reduce the friction resistance of imported bearings, effectively raising the fan inlet bearing service life, thus to prolong the service life of the radiator. The manufacturing process is more complex, increasing cost.