Install FAG bearing damage causes and countermeasures in the process of knowledge - bearing

by:Waxing     2020-05-25
By heating FAG bearing or bearing seat, by using thermal expansion will fit into a loose fit installation method. Installation method is a kind of common and energy saving. This method is suitable for interference quantity larger FAG bearing installation, hot charging before the FAG bearing type or separable FAG bearing ring into the fuel tank 80 - uniform heat 100 ℃, and then loaded on the shaft, as soon as possible out of the oil to prevent inner ring after cooling end face and shoulder joint is not tight, FAG bearing axial fastening again after cooling. FAG bearing outer ring and light metal bearing seat tight fit, heating FAG bearing hot charging methods, can avoid the mating surface scratch. Tank heating FAG bearing, due at a certain distance from the bottom of a mesh, or hanging hooks in the bearings, FAG bearing cannot be on the bottom, in case of heavy impurities into the bearing or uneven heating, fuel tank must have a thermometer, strictly control the oil temperature shall not exceed 100 ℃, in order to prevent the tempering effect, reduce the hardness of the ring. Even invisible to the naked eye smile dust into the FAG bearings, also can increase the bearing wear, vibration and noise. 2, using appropriate and accurate installation tools use a special tool, as far as possible to avoid use cloth class and short fiber, things like that. Third, be careful when using the installation does not allow a powerful punch, are not allowed to use hammer percussion FAG bearing directly, not allowed by transfer roller pressure. Four, to prevent rusting FAG bearing directly with the hand take FAG bearing, to fully wash hands sweat, and again after coated with high quality mineral oils, especially in the rainy season and summer to pay attention to rust. In some special operating conditions, FAG bearings can get more than the life of the traditional computing, especially in the case of light load. These special operating conditions is, when the rolling surface ( Track and rolling piece) Can be separated by a lubricating oil film effectively and the surface of the limit of pollutants may cause damage. In fact, under ideal conditions, the so-called permanent bearing life is possible. FAG rolling bearings of life with revolution ( Or in the hours of work under a certain speed) , definition: within the life of the bearing, should be in any of its bearing ring or rolling on initial fatigue damage ( Flake or defect) 。 In any test in the laboratory or in actual use, can be clearly seen, under the same working conditions the appearance of the same FAG bearing, real life was very different. In addition there are several different definitions of 'life' FAG bearing, one of which is known as the 'service life', it represents a FAG bearing before damage to the actual life is by the wear and tear, damage usually is not caused by fatigue, but due to abrasion, corrosion, damage to the seal, and so on. Most of the FAG bearing damage for many reasons - — Than previously estimated load, the effective sealing, tight fit too small, as a result of bearing clearance, etc. Any of these factors factors there is its special damage forms and will leave a special signs of deterioration. Examine damaged shaft bearing, therefore, in most cases can find its possible causes, generally speaking, a third of the FAG bearing damage resulting from the fatigue damage, a third of the other resulting from poor lubrication, a third of the other resulting from pollutants into the FAG bearing improper handling or installation.
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