A scroll compressor comprising: a fixed scroll; an orbiting scroll orbiting relative to the fixed scroll; a main shaft transmitting a rotational driving force to the orbiting scroll; an eccentric shaft disposed at a first end of the main shaft, the eccentric shaft being located eccentrically with respect to an axis of the main shaft in an eccentric direction; a slider having a slide hole slidably receiving the eccentric shaft; and an orbiting bearing located at the orbiting scroll, the orbiting bearing rotatably supporting the slider, wherein the slider includes a cylindrical portion rotatably supported by the orbiting bearing and a balance weight portion located radially outward of the cylindrical portion, wherein assuming that a counter-eccentric direction is a direction opposite to the eccentric direction, the balance weight portion includes a counter weight part located in the eccentric direction of a rotation axis of the slider and joined to the cylindrical portion, a first main weight component located in the counter-eccentric direction of the rotation axis of the slider and joined to the cylindrical portion, and a second main weight component located in the counter-eccentric direction of the rotation axis of the slider and protruding from peripheral part of the first main weight component toward the orbiting scroll, wherein the counter weight part has a first outer circumferential surface having a radius, that is a partial cylindrical surface about the rotation axis of the slider, wherein the first main weight component has a second outer circumferential surface having a radius, and wherein the second main weight component has a third outer circumferential surface having a radius, that is located radially outward of the second outer circumferential surface and that is a partial cylindrical surface about the rotation axis of the slider and an inner circumferential surface that is a partial cylindrical surface about the axis of the cylindrical portion, characterized in that the second outer circumferential surface is a partial cylindrical surface about an axis of the cylindrical portion, wherein the third outer circumferential surface has a radius identical to that of the first outer circumferential surface. a fixed scroll; an orbiting scroll orbiting relative to the fixed scroll; a main shaft transmitting a rotational driving force to the orbiting scroll; an eccentric shaft disposed at a first end of the main shaft, the eccentric shaft being located eccentrically with respect to an axis of the main shaft in an eccentric direction; a slider having a slide hole slidably receiving the eccentric shaft; and an orbiting bearing located at the orbiting scroll, the orbiting bearing rotatably supporting the slider, wherein the slider includes a cylindrical portion rotatably supported by the orbiting bearing and a balance weight portion located radially outward of the cylindrical portion, a cylindrical portion rotatably supported by the orbiting bearing and a balance weight portion located radially outward of the cylindrical portion, wherein assuming that a counter-eccentric direction is a direction opposite to the eccentric direction, the balance weight portion includes a counter weight part located in the eccentric direction of a rotation axis of the slider and joined to the cylindrical portion, a first main weight component located in the counter-eccentric direction of the rotation axis of the slider and joined to the cylindrical portion, and a second main weight component located in the counter-eccentric direction of the rotation axis of the slider and protruding from peripheral part of the first main weight component toward the orbiting scroll, a counter weight part located in the eccentric direction of a rotation axis of the slider and joined to the cylindrical portion, a first main weight component located in the counter-eccentric direction of the rotation axis of the slider and joined to the cylindrical portion, and a second main weight component located in the counter-eccentric direction of the rotation axis of the slider and protruding from peripheral part of the first main weight component toward the orbiting scroll, wherein the counter weight part has a first outer circumferential surface having a radius, that is a partial cylindrical surface about the rotation axis of the slider, wherein the first main weight component has a second outer circumferential surface having a radius, and wherein the second main weight component has a third outer circumferential surface having a radius, that is located radially outward of the second outer circumferential surface and that is a partial cylindrical surface about the rotation axis of the slider and an inner circumferential surface that is a partial cylindrical surface about the axis of the cylindrical portion, characterized in that the second outer circumferential surface is a partial cylindrical surface about an axis of the cylindrical portion, wherein the third outer circumferential surface has a radius identical to that of the first outer circumferential surface.