PURPOSE: To prevent the occurrence of wear and seizure of a thrust support surface by preventing the occurrence of defective lubrication to the inner side in a radial direction of the thrust support surface of a bearing housing especially when it is on an orbit through simple structure and simple processing.

CONSTITUTION: A bearing housing 5 contains a revolving part 53 to receive the eccentric shaft part 41 of the drive shaft 4 and a thrust support surface 52 to support the back of a moving scroll 2. An annular oil groove 54 is formed approximately in the central part in a radial direction of the thrust support surface 52. A first feed oil passage 55 to intercommunicate the main feed oil passage 42 of the drive shaft 4 and the annular oil groove 54 is formed. The bearing housing 5 is provided with a second feed oil passage 56 comprising a passage 57 for a centrifugal force opened to the revolving part 53; and a guide passage 58 to intercommunicate the outer side in a radial direction of the centrifugal force exerting passage 57 and the side, situated more inside in a radial direction than the annular oil groove 54, of the thrust support surface 52.