Patent ID: 8348638

Claim:
A compressor comprising a hermetic container which comprises: a lubricant; an electric element provided with a stator and a rotor; and a compressing element driven by the electric element, wherein the compressing element comprises: a shaft provided with an eccentric shaft portion and a main shaft portion to which the rotor is fixed; a cylinder block provided with a compression chamber; a piston reciprocating in the compression chamber; a connection mechanism connecting the piston to the eccentric shaft portion; a bearing provided at the cylinder block to axially support the main shaft portion; and a thrust ball bearing provided between the rotor and a bearing end surface of the bearing, wherein the thrust ball bearing comprises: a plurality of balls; and a lower race being placed on a thrust surface of the bearing end surface for rotational contact with the balls, wherein the lower race has at least one protrusion extending radially from an outer periphery of the lower race, and the bearing end surface has at least one notch that is formed deeper than the thrust surface and engages with the at least one protrusion to regulate rotational movement of the lower race relative to the thrust surface, and the at least one notch is provided at an outer peripheral side of the bearing end surface so as not to communicate with an inner peripheral portion of the bearing.