AIR-FEEDING DEVICE

摘要

Grease sealed-type bearings are used for an air-feeding device, the bearings including those such as a bearing for rotatably supporting a shaft, a bearing for rotatably supporting a rotating scroll, and a bearing for rotatably supporting a rotation-restraining member for allowing the rotating scroll to rotate. Sealing members are installed on both sides of rolling bodies of the bearing supporting the rotating scroll, and an inner end portion and an outer end portion of a sealing member are brought to be in contact with an inner ring and an outer ring, respectively.