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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge> Frequently asked questions about the deformation of SKF bearings in the process of SKF bearing Frequently Asked Questions about SKF Bearing Deformation in the Process of SKF Bearings
In the SKF bearing device; each engineer is most concerned about how to operate correctly; if it is not properly operated, it can form damage to SKF bearings. For example, work under high speed conditions; and the operating temperature is high; pay special attention to the rotating ring Cooperation can not be too loose; to avoid the appearance of painful oscillations; and the cooperation of the fixed ferrule can not present gaps; to avoid deformation of the ferrule under load and stimulate oscillation. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
It is also advisable to obtain a small amount of rotation of the rotating ferrule in the range of energy. It is only necessary to ensure the thermal expansion effect at the working temperature; and the centrifugal force at the highest speed; it does not form an activity or sliding of the tight cooperation surface. According to the working load size and SKF bearing scale; select very small gap cooperation or interference cooperation; too loose or too tight are arrogant to adhere to the original accurate shape.
It is necessary to accurately calculate the interference of the rotating ferrule cooperation; it is also necessary to accurately calculate the appropriate cooperation amount of the fixed ferrule.
The roundness of the shaft and the seat hole and the straightness of the shoulder should be required according to the corresponding precision of the SKF bearing.
Adhere to the accuracy of the assembly of the frame by the special assembly of the tire to ensure; can fully ensure the assembly accuracy requirements of SKF bearings.
The condition for adopting a small interference cooperation with the fixed ring is that the outer surface has a high shape accuracy and a small roughness on both sides; otherwise, it is more difficult to form the device and it is more difficult to disassemble; in addition, it is necessary to consider the influence of the spindle thermal elongation.
The swaying load and the indefinite load should be treated equally with the rotating load in cooperation; too loose cooperation will lead to cooperation surface damage.
The ferrule and shaft or seat hole related to the rotation of the load direction; should choose the transition cooperation or interference cooperation. The interference size is used when the SKF bearing is working under load; the ferrule is not on the cooperation surface of the shaft or the seat hole. The occurrence of the “activity†is the criterion. The load is very light; or the ferrule has a low-speed transition under the heavy load effect; the transition cooperation can be selected; at this moment, the bearing appearance should have higher hardness and smaller surface roughness.
Regarding heavy load applications; generally, the cooperation should be tighter than in light load and normal load situations. The heavier the load; the greater the cooperative interference should be.
The main shaft of the pair of double-angle contact ball bearings is used; the load of 80% is lighter; if the cooperative interference is too large, the internal axial preload will be significantly larger; the influence of helium is formed. The main shaft of the sub-bearing and the main shaft of the tapered roller bearing; its load is relatively large; so its cooperation and interference is relatively large.
Sometimes the direction and the size of the load cannot be determined arbitrarily; for example, in a high-speed rotating machine; except that the received rotor component is a fixed direction load; there is also a rotating load caused by unbalanced mass; if this rotational load is more than a fixed load The composition load is still a rotating load, and if the rotating load is much smaller than the fixed load; the composition load is a rocking load. The rotating load is still a rocking load; the size and direction of the SKF bearing are constantly changing. In the variable working state; some ferrules can be loaded with a rotating load; time is a fixed load; time is a rocking load. This load is called an indefinite load.
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