Hermetically sealed compressor

A hermetically sealed compressor comprising:

• an electric element having a rotor and a crankshaft;
• and
• a compression element having a connecting rod;
• and
• a hermetic container resiliently supporting said electric element and compression element therein;
• said crankshaft secured to said rotor of the electric element and supported by a pair of ball bearings,
• said crankshaft comprising a principal part and an eccentric axial part, positioned at its upper end,
• said eccentric axial part being connected to one end of said connecting rod,
• a first one of said ball bearings being installed in mating contact with said principal part of said crankshaft,
• a second one of said ball bearings being installed in mating contact with said eccentric axial part coaxially with said first one of said ball bearings,
• a spacer, having an eccentric hole, inserted in an inner washer of said second one of said ball bearings,
• said eccentric axial part of said crankshaft inserted in said eccentric hole of the spacer.

A hermetically sealed compressor comprising:

• an electric element having a rotor and a crankshaft, said crankshaft being arranged vertically;
• a compression element having a connecting rod;
• and
• a hermetic container for containing and resiliently supporting said electric element and compression element;
• said crankshaft secured to said rotor of the electric element and supported by a pair of ball bearings, each of said ball bearings including an outer washer,
• said crankshaft comprising a principal part, a secondary part, and an eccentric axial part, said eccentric axial part positioned between the principal part and the secondary part,
• said eccentric axial part being connected to one end of said connecting rod,
• said eccentric axial having a shape which in a projection view in the axial direction of said crankshaft overlays all of said principal part and said secondary part of said crankshaft,
• one of said pair of ball bearings being installed in each of said principal part and said secondary part respectively, and the outer washer of at least one of said ball bearings being installed so that downward force caused by weight of both said crankshaft and said rotor are supported at least one of said outer washer of said ball bearing in order for said ball bearing to be pre-loaded.