Abstract: A halved sliding bearing (1) has a recess (7) formed in a circumferential direction from an outer peripheral edge of a mating surface (5) of a semi-cylindrical bearing main body (3). To prevent formation of a burr to an inside of the recess (7) during formation of the mating surface (5), an entirety of at least one edge segment of a peripheral edge of the recess (7) opening on a circumferential end surface of a semi-cylindrical member (23) as an unprocessed body of the bearing main body (3), the at least one edge segment intersecting with an axial direction of the member (23), is chamfered. The mating surface is formed by cutting the circumferential end surface such that a cutting blade (31) firstly reaches the chamfered edge in the peripheral edge of the recess (7). Thus, the bearing main body is produced.

Abstract: A half plain bearing that has a positioning member with a novel construction, and a manufacturing method of the half plain bearing are proposed. If part of a material from which a bearing body 13 is formed is allowed to escape to outside of a tool with a narrow width when pressed by the tool, an amount of protrusion needed for a positioning member 20 to perform a function thereof (an amount of protrusion from an outer peripheral face of the bearing body) can be ensured while suppressing an amount of deformation of the material from which the bearing body 13 is formed in a circumferential direction thereof. The positioning member 20 of the half plain bearing thus formed has a flat portion 21a and a protrusion portion 22. A tip of the protrusion portion 22 is located on a mating face side with respect to a virtual plane that includes the flat portion 21a.

Abstract: A halved sliding bearing (1) has a recess (7) formed in a circumferential direction from an outer peripheral edge of a mating surface (5) of a semi-cylindrical bearing main body (3). To prevent formation of a burr to an inside of the recess (7) during formation of the mating surface (5), an entirety of at least one edge segment of a peripheral edge of the recess (7) opening on a circumferential end surface of a semi-cylindrical member (23) as an unprocessed body of the bearing main body (3), the at least one edge segment intersecting with an axial direction of the member (23), is chamfered. The mating surface is formed by cutting the circumferential end surface such that a cutting blade (31) firstly reaches the chamfered edge in the peripheral edge of the recess (7). Thus, the bearing main body is produced.

Abstract: A half plain bearing that has a positioning member with a novel construction, and a manufacturing method of the half plain bearing are proposed. If part of a material from which a bearing body 13 is formed is allowed to escape to outside of a tool with a narrow width when pressed by the tool, an amount of protrusion needed for a positioning member 20 to perform a function thereof (an amount of protrusion from an outer peripheral face of the bearing body) can be ensured while suppressing an amount of deformation of the material from which the bearing body 13 is formed in a circumferential direction thereof. The positioning member 20 of the half plain bearing thus formed has a flat portion 21a and a protrusion portion 22. A tip of the protrusion portion 22 is located on a mating face side with respect to a virtual plane that includes the flat portion 21a.