Patent ID: 8721183

Claim:
A bearing assembly, comprising: at least two units, each unit including two opposite ends, each end forming a connection portion, the at least two units including at least one pair of two adjacent units being axially coupled together with one of the two adjacent units abutting against another one of the two adjacent units to allow at least one pair of two abutting connection portions of the at least one pair of the two adjacent units adapted to be contacted therebetween to form the bearing assembly, and a largest outer periphery between two connection portions of each unit forming a mounting portion, each unit further containing an axle hole axially running through the two opposite ends thereof, at least one trench with an enlarged opening being formed on at least one end of a wall surface of the axle hole directing towards at least one of the two connection portions of each unit, axle holes of the at least two units forming an axial hole of the bearing assembly for insertion of a spinning shaft; wherein the at least one pair of two abutting connection portions forms at least one pair of at least one set of interfaces, each set of the interfaces having complementary shapes, at least one groove and at least one set of multiple notches being formed between the at least one pair of the two adjacent units of the bearing assembly, an outer periphery of the at least one groove having smaller radial dimension than the mounting portion, mounting portions of the bearing assembly being fixedly encased in and fully contacted with an inner periphery of a jutting chamber located at a center of each of two ends of a motor housing in the art, the at least one set of multiple notches being annularly distributed on at least one of the two abutting connection portions of the bearing assembly and communicating with the at least one groove and the at least one trench and the axle hole, the at least one groove forming at least one storage chamber of the bearing assembly to store lubricating media therein, the at least one set of multiple notches forming at least one set of multiple passages of the bearing assembly to communicate with the at least one storage chamber and the axial hole.