To provide a bearing device of a stabilizer which suppresses generation of abnormal noise and easily assembled.

A stabilizer S is slidably supported by a synthetic resin-made cylindrical bush 6 to prevent generation of abnormal noise. A small diameter shaft part 2602 is fitted to a small diameter hole part 1402, and a flange part 2604 is inserted in a large diameter hole part 1404, and an annular end face 2612 of the flange part 2604 is locked to an annular locking face 1406 of an engagement hole 14. Thus, the cylindrical bush 6 is opened/closed following an elastic supporting member 8 as the elastic supporting member 8 is opened/closed during the assembly to the stabilizer S, and the assembly to the stabilizer S is easily performed. Further, two engagement projecting parts 26 are engaged with the engagement hole 14, the assembly of the cylindrical bush 6 to the elastic supporting member 8 is also performed easily, and the rotation of the cylindrical bush 6 with respect to the elastic supporting member 8 can be reliably prevented.

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