REFRIGERANT COMPRESSOR

Hermetically encapsulated refrigerant compressor (1), comprising a cylinder housing (3), which is used as the basis for manufacturing various refrigerant compressor construction series each having different working volumes and a piston (6) guided in a piston bore (8) of the cylinder housing (3) along a defined piston run surface (9). According to the invention, it is provided that a free run section (10) is situated in the piston bore (8) as a function of the particular working volume to be implemented inside the cylinder housing (3), which working volume is fixable by a variation of the position of the piston (6) or the piston run surface (9) in the piston bore (8), so that the piston run surface (9) is reduced to a minimal guide length measured in the direction of the cylinder axis (12), at which the piston (6) is only lowered in its bottom dead center position far enough into the area of the piston bore (8) corresponding to the piston run surface (9) so that the piston (6) is just prevented from falling out of the piston bore (8) and a sealing action of the piston (6) in relation to the piston run surface (9) is provided.