2013年3月13日星期三

Deep groove ball bearings lubricated friction and wear mechanism analysis


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    The skf bearing friction mechanism was significantly different with the other bearing, the frictional force is mainly depending on the radial load, the wobble frequency, oscillating number, the swing angle, the temperat ure of the contact surface, and the surface roughness, and other factors. General deep groove ball bearing in the movement of the inner and outer rings relative to sliding friction, and its larger friction; liner layer and the inner or the outer ring while the other bearing in the movement, compared with the relative sliding under friction, the friction coefficient small. The study shows that, under the same conditions as the coefficient of friction of different materials SKF Bearing have significant differences, in the gasket material.
With the continuous development of the bearings, the wear mechanisms and forms of change. Usually lubricated bearings in the work process, due to the relative sliding of the inner and outer rings, thereby causing the bearing surface layer material continuous loss result in the bearing can not work properly. The main wear adhesive wear, abrasive wear and corrosion wear of three types. Deep groove ball bearing wear to work due to the relat ive sliding of the liner and the inner and outer rings, which caused the shedding of the liner, tearing, extrusion and other failure modes, causing the bearing is not working properly.bearing manufacturer
The role of the bearing lubrication can be briefly described as follows:
a. an oil layer is formed in the two rolling surfaces or sliding surfaces of mutual contact between the second surface spaced apart, reducing the friction and wear of the contact surface.
using oil lubrication, especially circulating oil lubrication, oil mist lubrication and injection lubrication, lubricants can take away most of the internal friction heat of the deep groove ball bearings, to play an effective role in heat dissipation.
greased, can prevent external dust and other foreign matter from entering the bearing and sealing effect.
d lubricant has to prevent metal corrosion.
e. extend the fatigu e life of the bearing.
As we all know, their work appearance always kept the dial gauge head against the end face of the deep groove ball bearings or shafts appropriate parts, even if it is with a contemporary superlative skf bearing parts of manufacturing technology and processing. Observe the changes in the method of its readings with the pretension load. Pretension method has its negative aspects, such as the imported bearing friction torque increases, the temperature increase, and shortened life expectancy, so to take full account the different levels of tiny geometric error, roller bearings and DD clearance, shaft or bearing boxes need be rotated toward different directions several weeks, to ensure that the ball end portion of the deep groove ball bearing with the proper contact on the leading edge of the inner ring.ball bearing manufacturer
Self-lubricating layer thinning, lead to the skf bearing wear dep th increases. Thus, the reason of the bearing failure in its swing process PTFE constantly being extruded, the lubricating function decline, eventually leading to the woven base material wear occurs.

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