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Bearing import: SKF bearing billboards do
by:Waxing
2020-11-12
Therefore, correct and reasonable use of the bearing is a systems engineering, and in the process of bearing structure design, manufacture and installed, in view of the early failure of link, the corresponding measures, can effectively improve the service life of bearing and the host.
Grease choice: the choice of grease as NSK bearings is according to the rotating speed, heat resistance, such as noise and aerodynamic moment for choice, requires us to grease the west can understand.
Temperature adjustment of hardness, different tempering steel grade change, lubrication sealing structure design is not reasonable at present domestic many vibrator bearing with grease lubrication, labyrinth seal structure and seal clearance in ~ mm.
Skewed bearings fever caused by bearing installation skew, will cause the ball is not in the correct position of the bearing raceway rolling, and even cause larger ball end face and inner race and the outer bearing seat block of axial force, bearing caused by overheating.
Cost is low, the economical thermoplastic cage only vice mold, molding directly can produce qualified products, than stamping steel cage and machined brass cage can reduce -
Working procedure.
As for the insulation of the bearing outer ring used as additional coating)
Insulation, individual occasions will use inner and outer ring are additional insulation layer, as shown in the figure below.
Dali ranked high quality special bearing to negotiate business, has a certain reason, the film has been continuously destroyed and air or oxygen atoms in the liquid iron atoms will constantly infiltration or metal separation out unceasingly, forming loose iron oxide, metal surface are also constantly rust.
Know the operation condition of the bearing, you can choose to adapt to the working condition of bearing, due to the bearing operating temperature is very high, outer ring USES the AISIM material with good resistance to high temperature and high temperature stability, the material can still achieve HRC hardness when ℃ C.
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After taking crackle is made, the metallographic specimen observation, crackle, deep basic perpendicular to the surface, which found no material mixed distribution, basic dimensions as amended in accordance with ISO standards;
, amount of interference is made up of inner ring in cone diameter of axle, set set, or withdrawal of the axial forward distance on the decision.
Bearing examination should focus on what & amp;
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Bearing the quality first, check whether there is grease metamorphism, agglomerate, impurities such as adverse situation, this is the important basis of reason judge bearing damage.
But sometimes due to the size of the diameter of axle and bearing hole measurement inaccuracy or cooperate with surface roughness, do not meet the standard requirements to cause excessive interference fit, the bearing race is being squeezed from a large, resulting in the radial clearance of bearing itself is reduced, the bearing rotating difficulties, fever, wear or jammed, caused serious bearing inner and outer race cracking when installing.
Repair welding of machining process need to remove for shaft as a whole, return through heavy machinery and transport equipment manufacturer for repair, so that the overall need to cycle around for days, or even longer.
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