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Reasons for the failure of NSK imported bearings and the improvement of their claims

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Bearing fault analysis; to improve the reliability of the external appearance of the system engineering of the bearing (bearing function of the bearing in its rule of loss; incurring faults or not working as a representation of the loss; for bearing problems. can be divided into their normal days Loss and two early failures) This is mainly to analyze the reasons for the early failure of the pitting and exhaustion and to propose improvements; to improve the life and reliability of NSK bearings.
NSK bearing fatigue failure is a disfigured appearance; the primary manifestation is the germination of fatigue cracks; the expansion and cracking process; the long-term effects of metal damage caused by the loading failure under replacement.
Top of the list: from the appearance; this is; NSK bearing in the tumbling touch process; because of the plastic deformation and external hardening of the external surface of the work surface, the external load is formed by the impact of the external stress; and finally in the small crack from the development The inside and outside of the table; the composition of the external crack between the two; because the appearance of the work into the smoothing agent; the strength of the open; severely hit the wall; forcing the crack to push forward;
Second: from the surface layer; under repeated pressure; the touch of the appearance; the crack that begins to crack at a local depth that is exposed to the outside; and the viewpoint along the outward direction; to a certain depth; from the appearance of the touch surface; Passing over the exterior; and ending up forming an eclipse; leaving a pit.
From the appearance; still from the surface of the crack; these two guidelines (parts carburizing; quenching and other external heat treatment; if there is uneven hardness; arrangement; and non-uniform internal stress and other helium; then touch stress Usually from the influence of the opposite underground crack; if the surface of the part is of poor quality; there is a disadvantage (oxidation; decarburization); conflict or smoothness;

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