A hermetic compressor spirals.

Compressor (20) coil comprising: a first element (24) coil having a base and a shell generally spirally extending from said base; a second element (22) coil having a base and a shell generally spirally extending from its base, and a shaft (26) to force said second scroll to orbit relative to said first scroll member element; a casing (44) for supporting said second scroll member, said crankcase having an outer surface (47) peripheral to a predetermined outer diameter, having been machined said outer peripheral surface of said crankcase to be concentric with a housing for bearing made the central axis of said housing, said housing receiving an upper bearing; a housing enclosing the said shaft and said first and second scroll members and said crankcase, including said one shell (40) central and upper (42) and lower casing (34), being mounted said lower end cap a bearing (32) for supporting a lower end (33) of said shaft and being mounted to said housing in said crankcase bearing a bearing (48) top to support a top cover of said shaft; characterized in that said lower bearing having a bearing axis which is cut to be concentric and parallel relative to an outer surface (54, 91) peripheral to said lower end cap, and said outer peripheral surface of said lower end cap is concentric with an interior of said center shell peripheral surface and said outer surface of said housing is concentric with said interior of said center shell, such periphery said upper and lower bearings are concentric one alotro relationship.