The cause of the diesel engine bearing damage - bearing knowledge

There are 7 big reason for a diesel engine bearing damage generally is lack of lubricating oil. Reasons include: oil drain after not to join the new oil; Crankcase oil plug for vibration lost the light-leaking; Mesh plug, oil return valve spring failure, cylinder oil hole blocked off road have sand holes or process, bearing severe wear, oil hole on the bearing shell out on the oil supply holes or bowl, the wrong under tile, fuel oil, fuel injector and fuel pump plunger wear bad atomizing and diesel oil leaking into the crankcase, make out lube oil until the oil shortage and 'burn' injury etc. Second, the lubricating oil is not clean. Reasons include: oil contains a large number of metal abrasive dust, dirt or mechanical impurity and so on. Three is a lubricating oil brand don't comply with the provisions of the manual. Four is the use of improper maintenance. Reasons include: overload cause bearing alloy broken off, indentation on the ball path, even break the inner and outer circle; Cone bearing axial clearance is too large, wheel rolling on bumpy road when a collision occurs, the pressure to the bearing outer ring and roller broken; Not according to every 10 ~ 12 h filling calcium base grease, etc. Five is bearing manufacturing defect. Reasons include: the retainer deformation, inner ring and outer ring of relatively straight deflection and rolling body binding, etc. Six is poorly kept. Reasons include: rust bad or more oil seal without oil again; Or use sandpaper to clean rust reduces the accuracy, knock against, or fall injury, etc. Seven is improper installation. Reasons include: hammer banging around zhuang cause crack; Hitting loaded with blunt child bearing caused by bearing collapse; Seat broken spread caused by another seat, and hard to knock down retainer deformation; Two bearing center line of a straight error is too great, make needle roller, roller and inside and outside the circle is a lot of pressure, causing premature bearing fatigue damage; Bearing inner ring damage of partial or pretending to be; The bearing to a much smaller than the bearing outer ring outside diameter size of hole, deformation or fracture caused by outer ring, bearing rotating binding; Bearing inner ring hole hole and shaft neck or bearing outer ring and cooperate too loose, causing damage to the bearing axis deflection, the gear meshing is lax. Assembly feet? 吗? Bearing which is caused by the error of the chain of pre stress; Crank shaft neck taper error, bearing bush lost round, incorrect pressure stick and disorder of the center line of the connecting rod bearing damage, conical journal bearing and bearing bush asked end clearance ambassador eccentric wear, led to increasing the high temperature wear. The formation and causes of damage of rolling bearing is of great importance in the process of using imported bearing, because of itself quality and external conditions, its carrying capacity, rotating precision and antifriction performance etc. Will change, when the performance of the bearing below use requirement and cannot work normally, is called a bearing damage or failure, bearing the accident situation such as in the event of damage, there will be stalling its machines, equipment, functional damage and other anomalies. So you need to investigate causes in a short time, and take corresponding measures, of course, the rolling bearing damaged the damage is much more complex than general machinery parts, the characteristics of the rolling bearing damage is the number of forms, reasons, bearing damage in addition to bearing design and manufacture of the inner factors, mostly due to improper use, such as: selection of suitable ( See the customer information) , bearing design is unreasonable, improper installation, poor lubrication, sealing is not good and so on caused by external factors. The formation and causes of damage of rolling bearing has the vital significance, on the one hand can improve the using method, proper use of bearings, give full play to the efficiency of bearing on the other hand can help to develop new product performance better. In this article, in addition to the narrative in the rolling bearing use note, method of installation, operation and supervision thereof, also introduces the forms and causes of damage and the countermeasures should be taken.