Nine common cause of bearing failure-Wenzhou Bearing wholesale

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Nine common cause of bearing failure

点击数：6843 日期：2014/4/4

Bearing failure occurred during operation is constant some thing, so don't get excited over a little thing. A fault, judgment and treatment is the key. Today we explain the common faults of FAG bearings. 1, the bearing temperature is too high: institutional operation, installation of bearing parts to allow a certain temperature, when the hand touch body shell, should not feel hot to normal, instead it indicates that the bearing temperature is too high. The reason of high temperature of bearing: lubricating oil quality does not meet the requirements or deterioration, the oil viscosity is too high; mechanism assembly tight (spaces); preloaded bearing; bearing race rotation on the shaft or shell; overload; bearing retainer or rolling body fragmentation. 2, the bearing noise: rolling bearing is allowed in the work of the minor operation noise, if the sound is too loud or unusual noise or impact sound, it indicates that the bearing failure. Reasons of rolling bearing noise: 1) is more complex, bearings, with the surface wear. Due to the wear, destroyed the fit between bearing and housing, bearing and shaft, causes the axis deviates from the correct location, the axis in high-speed motion noise. When the bearing fatigue, its surface metal flake, also bearing radial clearance increases the noise. 2) insufficient lubrication of the bearing, the formation of dry friction, as well as bearing broken produces abnormal sound. 3) after bearing wear loose, loose cage damage, also can produce abnormal sound of bearing damage. Rolling bearing inspection is disassembled, can determine the fault and damage causes of bearing according to the damage of bearing. 3, the raceway surface metal flake: bearing rolling element and the inner, outer ring raceway surface are subjected to cyclical fluctuation load, resulting in periodic changes of contact stress. When the stress cycle number reaches a certain value, will produce fatigue spalling on the rolling body or the inner, outer ring raceway surface. If the bearing load is too large, will exacerbate this fatigue. In addition, the bearing is not being installed, shaft bending, also have a raceway spalling phenomenon. Raceway on Bearing fatigue peeling can reduce the running accuracy of the shaft, the vibration and noise mechanism. 4, bearing burn: burn bearing raceway, the rolling body temper. Burn the reason is the general lack of lubrication, lubricating oil quality does not meet the requirements or deterioration, as well as the bearing assembly too tight. 5, the plastic deformation: uneven pits and roller roller contact surfaces of a bearing, the bearing plastic deformation. The reason is the effect of bearing static load or impact load, the local stress more than material yield limit of the working surface, which generally occurs on the low speed rotation of the bearing. 6, bearing ring crack: causes of bearing ring crack may be bearing with the tight, bearing inner ring of foreign or loose, inclusive deformation element bearing surface processing, installation of bearing bad etc.. 7, cage fragmentation: the reason is lack of lubrication, rolling crush, seat tilt. 8, to maintain the metal adhesion frame on the rolling body, can cause is the rolling was stuck in a cage or lack of lubrication. 9, raceway badly worn: may be circles into the foreign body, lack of lubricating oil or lubricating oil brand not appropriate.

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