Abstract: A hermetically sealed rotary compressor is disclosed which comprises a vertically disposed hermetically sealed cylindrical casing, an electric motor force fitted in the casing in coaxial relation therewith, a rotary refrigerant compressing device driven by the motor, the compressing device having a cylinder block having a side wall provided with a concavity, said casing having a side wall to which a terminal for feeding electrical power to the motor is attached, and a space formed with the concavity of the cylinder block, the space being adapted to receive electrical equipments to be connected with the terminal, the cylinder block being force fitted and secured in the casing such that the side surface of the block is brought into contact with the internal wall of the casing except for the concavity. The overall height of the compressor is lowered and noise produced by the compressor is reduced.