A lubricant supply device comprising: a fixer that is provided with an oil inlet, an accommodation space that communicates with the oil inlet, and an oil chamber that is spaced apart from the oil inlet and communicates with the oil inlet via the accommodation space, wherein the fixer comprises a second fixer that is provided with a through hole at the center thereof and covers an upper portion of the accommodation space; and a rotator that is accommodated in the accommodation space of the fixer and is coupled to a rotational shaft to rotate with the rotational shaft and comprises a space that is provided at a position radially spaced apart from a rotational center of the rotator and that faces the oil inlet and the oil chamber, wherein the rotator further comprises: an inner diameter coupler provided at the rotational center of the rotator; and a connector that connects the inner diameter coupler and the rotational shaft and is provided with an oil outlet connected to the oil chamber and a lubricant supply flow path, wherein the connector comprises: a rotator mounting member that is inserted into and fixed to the inner diameter coupler; a penetrating member that extends axially from the rotator mounting member and penetrates the through hole; an diameter extended member extending radially outward from the penetrating member at the upper portion of the second fixer; and a rotational shaft mounting member that extends axially at the diameter enlarged member and is fastened to the rotational shaft, and wherein oil flowed in the space through the oil inlet is supplied to the oil chamber and oil in the oil chamber is supplied to the lubricant supply flow path through the oil outlet as the rotator rotates. a fixer that is provided with an oil inlet, an accommodation space that communicates with the oil inlet, and an oil chamber that is spaced apart from the oil inlet and communicates with the oil inlet via the accommodation space, wherein the fixer comprises a second fixer that is provided with a through hole at the center thereof and covers an upper portion of the accommodation space; and a rotator that is accommodated in the accommodation space of the fixer and is coupled to a rotational shaft to rotate with the rotational shaft and comprises a space that is provided at a position radially spaced apart from a rotational center of the rotator and that faces the oil inlet and the oil chamber, wherein the rotator further comprises: an inner diameter coupler provided at the rotational center of the rotator; and a connector that connects the inner diameter coupler and the rotational shaft and is provided with an oil outlet connected to the oil chamber and a lubricant supply flow path, an inner diameter coupler provided at the rotational center of the rotator; and a connector that connects the inner diameter coupler and the rotational shaft and is provided with an oil outlet connected to the oil chamber and a lubricant supply flow path, wherein the connector comprises: a rotator mounting member that is inserted into and fixed to the inner diameter coupler; a penetrating member that extends axially from the rotator mounting member and penetrates the through hole; an diameter extended member extending radially outward from the penetrating member at the upper portion of the second fixer; and a rotational shaft mounting member that extends axially at the diameter enlarged member and is fastened to the rotational shaft, and a rotator mounting member that is inserted into and fixed to the inner diameter coupler; a penetrating member that extends axially from the rotator mounting member and penetrates the through hole; an diameter extended member extending radially outward from the penetrating member at the upper portion of the second fixer; and a rotational shaft mounting member that extends axially at the diameter enlarged member and is fastened to the rotational shaft, and wherein oil flowed in the space through the oil inlet is supplied to the oil chamber and oil in the oil chamber is supplied to the lubricant supply flow path through the oil outlet as the rotator rotates.