Patent ID: 8422913

Claim:
An end cover part which is used to close an end of a cylindrical body, and transmits a driving force of a rotatable driving shaft to the cylindrical body, the end cover part comprising: a cover member having a tubular portion into which the driving shaft is to be fitted, and a to-be-fitted portion which is disposed in a flange-like manner in a periphery of the tubular portion, and which is to be fitted into an end portion of the cylindrical body; and three cut surfaces which are disposed respectively on inner and outer circumferences of the tubular portion of the cover member and an outer circumference of the to-be-fitted portion, and concentrically about a common reference central axis, wherein the cut surface which is formed on the outer circumference of the tubular portion is used as a positioning reference plane for positioning a functional member which is disposed in a periphery of the cylindrical body.