Patent ID: 8459873

Claim:
A self-lubricating composite bearing comprising: a casing axially defining an accommodation space through two opposite ends thereof; and a bearing set including at least two bearing members axially arranged together with one of the bearing member abutting against another adjacent bearing member, each bearing member having a mounting portion at one end with a largest radial dimension of an outer peripheral surface and a neck axially extended from the mounting portion with a smaller radial dimension of an outer peripheral surface than that of the mounting portion, each bearing member further having a connection portion at an end of the neck on an opposite side of the mounting portion, an axle hole being axially defined through two opposite ends of each bearing member, the outer peripheral surfaces of the mounting portions of the at least two bearing members allowing the bearing set to be securely encased in the accommodation space of the casing to form the self-lubricating composite bearing, the axle holes of the at least two bearing members forming an axial hole of the bearing set for the insertion of a rotating shaft to be supported by the self-lubricating composite bearing, the necks and connection portions between two adjacent bearing members cooperatively forming a neck portion of the bearing set, and a storage chamber being defined between an inner surface of the casing and an outer surface of the neck portion for storing a higher viscosity lubricant therein; wherein a plurality of notches are formed on a free end of the connection portion of each bearing member and communicated with the neck and the axle hole, the notches between the two adjacent bearing members forming a set of multiple fine flow passages, and the storage chamber being in fluid communication with the axial hole of the bearing set via the fine flow passages.