I would like to ask what this sentence about the requirements for bearing installation means
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I read the following requirement: The outer ring of the bearing should make even contact with the bearing housing hole within a range of 120° symmetric with respect to the center line, and it should also make even contact with the bearing cover hole within a range of 90° symmetric with respect to the center line. Could experts please explain this in detail?
What this sentence means is that when installing the bearing, the outer ring of the bearing and the bearing seat hole must maintain even contact within a 120-degree range symmetric about the center line； At the same time, the outer ring of the bearing and the bore of the bearing cover should also maintain even contact within a 90-degree range symmetric about the center line. In simple terms, the installation of the bearing must ensure even contact with the bore of the bearing housing and the bore of the bearing cover within a certain angle range, in order to guarantee stable operation of the bearing and reduce wear. .
The term “center line” should be replaced with “perpendicular bisector line.” The underlying intention of this statement is to ensure uniform radial loading on the outer ring of the bearing, by means of even contact between the outer ring and either the inner hole of the bearing housing or the semi-circular inner hole of the bearing cover, thereby ensuring the bearing’s radial load-bearing capacity.
The team in charge of detoxification has already responded. Generally speaking, the inner diameter of the hole and the ends of the cover plate may get damaged or deformed after being removed and reinstalled multiple times. The issue was emphasized precisely for the purpose of ensuring even stress distribution: the bearing seat hole is designed to handle radial forces, while the bearing cover hole is intended to handle axial forces. In practical applications, if it is not possible to replace the bearing housing and the bearing fits snugly within the inner hole of the housing, anaerobic expansion adhesive can be used as a solution.
Even contact – how to check it