Abstract: A floating bush bearing comprising: a pair of an outer member having a cylindrical inner surface and an inner member having a cylindrical outer surface which is inserted in the outer member substantially coaxially, one of said pair of outer and inner members being rotatable and another member being fixed; a floating bush having inner and outer cylindrical surfaces fitted between the outer and inner members; a substantially cylindrical hole which is defined by opposed substantially semicylindrical outer and inner grooves which are formed in the opposed surfaces of the rotatable member and the floating bush; and a small cylindrical pin which is fitted into the hole.