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Device adjustment and process requirements for long life bearing

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In order to ensure the longevity of the bearing; can not meet the usual equipment and adjustment needs; it is necessary to adopt the following methods:
1. The bearings are grouped according to the scale of their interference cooperation; in each group, the bearings are placed in order according to the size of the clearance. The corresponding shaft or seat hole diameters are grouped in the same group. The group is matched with the shaft group or the seat hole group with large diameter; the corresponding group with small scale and small diameter is matched. In each corresponding group of the general fit; the bearing with large clearance is tightly cooperated; The bearing with small gap takes a loose cooperation. It ensures the pre-stress of the bearing device is suitable; and avoids the occurrence of abnormal bearing failure such as movement, ferrule bursting, impact due to improper play, oscillation or heat, and cohesion. .
2. The coaxiality of the journal and the seat hole supporting the two ends and the straightness of the support end face should be strictly ensured; avoid the occurrence of additional load. For the load effect other than the bearing, the mechanical component should be slightly away from the more vulnerable bearing. The shaft and rotating parts system should work as smoothly as possible.
Generally speaking, the tumbling appearance is in a good condition of moderate compressive stress; but it is also necessary to contact the external stress change rate from grinding to superfinishing; to determine the process parameters that are most conducive to the bearing fatigue life; in this respect; The cooperation of the bearing-related professionals can be solved. The tamping layer of the tumbling surface mainly refers to the oxide layer, the work hardening layer and the arrangement of the distortion layer, which have physical and chemical properties with the outer metal layer of the base metal; their own strength is often poor. And the connection with the substrate is not strong; the bearing life and wear life of the bearing are extremely arrogant;
About high-precision bearings; because of the roughness required for the tumbling appearance, the 侄 侄 〉 〉 保 保 保 保 保 保 保 保 保 保 保 欢 募 募 募 募 募 募 募 募 募 募 募 募 募 募 募 募砻姹赜 伤 伤 苄 苄 苄 苄 魉 魉 傻 傻 傻 傻 傻 傻 悖 悖 悖 悖 悖 悖 悖 悖 悖 悖 悖

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