SKF import bearing fatigue fracture process is material surface, internal crack formation, to grow up, connection and extended process. Take the improvement set plan (such as avoid cutting edges, reduce stress concentration surface roughness and avoid the measures) and surface strengthening (such as surface hardening, chemical heat treatment, shot peening, rolling) all can improve zero component anti-fatigue capability. Material properties

The friction factor of metal friction pair with matching material properties and varies. Generally speaking, the same metal or solubility larger metal friction pair, prone to stick with, the friction factor bigger; Conversely, friction factor smaller. Different structure of the material has different friction properties. Such as graphite for has the stable layered structure and bond between the layers, easy to slip, so little less friction factor; And as diamond pairing of friction pair actual contact for high hardness, small area and not easy when the sticky, the friction factor lesser also. The FAG bearing material can be forging a aluminum, magnesium and copper, titanium alloy, heat resistant steel, steel, etc. The main characteristics of high-speed hammer forming process performance is good; : Forging quality is good; Forging high precision; Material utilization high; Equipment lighter and less investment; Forging heating conditions requires high.