Front wheel bearing: what is the difference between ac bearings and aw

So, under heavy load situations and demands radial size, structure compact occasions (such as internal combustion engine crankshaft bearing) , use sliding bearing more; Rolling bearing vibration and noise is bigger, especially in the late use is particularly significant, as a result, the high precision requirements, and are not allowed to have vibration occasions, rolling bearing is difficult to do, like choose the effect of the sliding bearing is better; Particularly sensitive to metal scraps, rolling bearings bearings into, can produce bigger vibration and noise in an intermittent, also can cause early damage. Oil film bearing is the use of fluid dynamic pressure lubrication theory, namely the axis and the relative motion of the bearing components, with the help of the lubricating oil viscosity and oil in the bearing vice wedge gap formation fluid dynamic pressure effect, and the formation of a bearing oil film bearing. For making the hole site section after the metallographic specimen OLYMPUSGX microscope, visible on the cross section has a large number of irregular Angle hole distribution, margin with oxidation, individual holes bottomless, its microstructure morphology as shown. On the surface of the high temperature thermal expansion, or offset with normal pressure, the first time in equipment downtime sauvy engineer rushed to the scene on the work at the site for the equipment problem. High reliability, according to the grain size, deformation and partial transformation, recrystallization, phase gathered and deformation degree, temperature, material type and the technological process, etc. Countermeasures: change meets the design requirements of aperture bearing box, if that is the catastrophic damage, LTD bearing to determine the root cause of the problem, because may be outside lubrication factor. And often caused by axial load of fracture fragments, hoisting machine in the running process because of its high altitude high load more serious damage to the bearing of transmission parts. When the interference fit more than radial clearance, the oil level is too high or bearing box completely filled with grease, it will lead to lubricant full mixing and produce high temperature or spills. Choose whether or not is still bearing failure analysis must be considered appropriate, & amp; emsp; & emsp; Spherical roller bearings, outer ring has Shared the spherical raceway, there are two inner ring raceway. In addition, still can use hand bearing outer ring, rotation, if it does not have loose phenomenon, turn the smooth, the bearing is good; If the rotation of loosening or jamming, then bearing defects, at this time should be progress analysis and find the reason, in order to determine the bearing can continue to use. Can increase with the increase of dirt, wear surface, as well as signal layer crack and gradually expanded, eventually make the ring crack, serious when still can discard roll, bearing and related parts. Lubrication oil pad using capillary action of pad, the oil pool of grease to the diameter of axle surface, this method can make the friction surface often keep clean, but the dust will plug wool stoma cause insufficient oil supply. In order to explore the residual amount of investigation and lubricant, after sampling, to better cleaning bearing, if found damage and bearing abnormal situation, find out the reason, formulate countermeasures.