[Problem to be solved] A storage device that can ensure sealing performance by using a swimming seal to eliminate the need to add lubricants over a long period of time, and a construction machine that includes the storage device. [Solution] The storage device (30) includes a shaft (37). The storage device (30) includes a hub section (38) with a bearing (39),The storage device (30) includes a cylindrical bond (40),which is mounted on one end of the shaft (37) instead of the hub section (38). The storage device (30) includes a swimming seal (50) for sealing lubricants, which is sandwiched between the hub section (38) and the bundle (40). The storage device (30) includes a pen (54),which is plugged into the insertion holes (55, 56) provided for in the shaft (37) and the bundle (40) at a position where a predetermined axial load is applied to the sealing (50) between the bundle (40) and the hub section (38). The storage device (30) includes a holder (32) with an opening (34) to attach the belt (40).
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