Bearing component for tubular column

The invention provides a bearing component for a tubular column. The tubular column comprises a tubular setting core spindle (comprising a large diameter section and a small diameter section, whereinthe tubular setting core spindle is provided with an annular groove), a bearing part sheathed outside the setting core spindle, and a pushing part. The bearing component comprises an annular elastic chuck, a bearing lug, a pin shaft and an elastic member. A main body of the elastic chuck is circumferentially provided with a lug groove, a pin shaft hole passing through the lug groove is installed on the main body along an axial direction of the main body. A groove is positioned between two bulges of the bearing lug. The elastic chuck and the pushing part are sheathed outside the large diametersection and in the bearing part. A claw head of an elastic claw is positioned in the annular groove. A convex part of the end part of the pushing part corresponds to the annular groove. The bearing lug is positioned in the lug