Main reasons of SKF thrust ball bearings failure

There are many reasons for the SKF thrust ball bearing failure, all influencing factors of design

and manufacturing processes are associated with the failure of thrust ball bearings, so it is

difficult to analyses and judge. Under normal circumstances, it generally can be considered and

analyzed in two aspects: use factors and internal factors.

Use factors

Use factors mainly refer to installation and adjustment, maintenance, maintenance and repair,

whether compliance with the technical requirements. Installation condition is one of the leading

factors in the use factors. Thrust ball bearings are often caused due to improper installation force

status changes between the various parts of the entire thrust ball bearings, and then thrust ball

bearings are in an abnormal state and early failure. According to thrust ball bearings technical

requirements for installation, use, maintenance, maintenance, monitor and inspect the burden of

load, speed, temperature, vibration, noise and lubrication of thrust ball bearing in operation, find

unusual reasons to adjust, bring it back to normal. In addition, analysis of the grease quality and

the surrounding medium, atmosphere is also important.

Internal factors

Internal factors mainly refer to three key factors: structural design, manufacturing technology and

material quality, which determines the quality of thrust ball bearings.

First of all, advanced reasonable structural design, will determine a thrust ball bearing for long

life. Thrust ball bearings are made to go through forging, heat treatment, machining, grinding and

assembling of the machining process. Reasonable, advanced, stability of all processes, can also

affect the life of thrust ball bearings. Heat treatment and grinding process which affect the

product quality of finished thrust ball bearings are often associated with failure of thrust ball

bearings. Recent years, studies on working surface degenerating layer of thrust ball bearing have

shown that grinding process has a close relationship with surface quality of thrust ball bearing.

Metallurgical quality of SKF thrust ball bearings used to be the main factors affecting the early

failure of the bearing. As metallurgical technology (such as vacuum degassing of steel of bearings,

etc.) increases, and quality of raw materials improved, raw materials quality factors in the failure

analysis proportion has dropped significantly, but it still is one of the main factors affecting

bearing failure. Selection of propriety still must be taken into account factors in bearing failure

analysis.

Main tasks of SKF thrust ball bearings failure analysis is, based on the large amount of

background material, analysis of data and failure modes, identify the main factors contributing to

failure so that targeting measures for improvement, extending service period of roller bearings,

avoiding unexpected early bearing failure.