To improve NSK bearings installed Shi of actual tie precision, must uses does not makes NSK bearings deformation of measurement method and measurement tools, on bearing of bore and outside round of tie surface size for actual of precision measurement, can will related diameter and OD of measurement project all be measured, and on measuring was data made comprehensive analysis, to this for according to, precision distribution made axis and block hole of bearing installed parts of size. In the actual measurement of the distribution of shaft and hole of appropriate dimensions and geometric shapes, and measurement of NSK bearingss should be carried out under the same temperature conditions.
To guarantee the higher actual tie effects, shaft and hole go with NSK bearings surface, roughness should be as small as possible.
In made above measurement Shi, should in NSK bearings of outside circles and within hole Shang, and axis and block hole of corresponds to surface Shang, in near Assembly pour corner of on both sides of, respectively made can as shown in the Ming maximum deviation direction of two group mark, to in actual Assembly Shi, makes match two party of maximum deviation alignment same azimuth, such in Assembly Hou, both of deviation to part offset.
Purpose of making two sets of directional signs, is the deviation compensation can be taken together, even supported at both ends of their respective running accuracy has improved, and between the two bearing bore trunnion coaxiality error on both ends and are partially eliminated. Measures to tie in with the introduction of surface hardening on the surface, such as sand, with a slightly larger diameter such as the precision column plug a hole, are conducive to increasing fitting accuracy.
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