Seeking help regarding the issue of shaft straightness deviation in centrifugal pumps
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I would like to ask: Regarding the statement that \"when checking the straightness of a centrifugal pump’s shaft, this value should not exceed 0.05 mm over its entire length\", how should this be understood? In other words, what does the deviation in the shaft’s straightness refer to?
The axis of the entire part must lie within a cylindrical surface with a diameter of 0.05 as the tolerance value. Knowledge tolerance – if the original poster doesn’t understand this, they can refer to textbooks on interchangeability or this website: http://www.jpkc.swust.edu.cn/C12/Course/user/admin/jxsj/hb/remedy/6.htm
The specific testing method involves using a V-shaped fixture on the shaft diameter where the bearing is mounted, and taking readings at various points; the runout value should not exceed 0.1 mm.