Refrigerant compressor with - a hermetically encapsulated compressor housing, - an electric drive unit arranged in a housing interior of the compressor housing and comprising a rotor rotatable about an axis of rotation, a stator, and a crankshaft, which crankshaft is connected to the rotor in a torque-proof manner, - a piston-cylinder unit arranged in the housing interior and comprising a piston, which piston is movably arranged in a cylinder of the piston-cylinder unit and can be driven by the crankshaft to compress refrigerant, - a lubricant receptacle for conveying lubricant from a lubricant sump arranged in a bottom area of the compressor housing vertically via the crankshaft, when the refrigerant compressor is in an operating state, wherein viewed in a first direction the stator extends from a first stator section to a second stator section and the rotor extends from a first rotor section to a second rotor section, wherein the first direction is parallel to the axis of rotation and points from the bottom area to the piston-cylinder unit, wherein the crankshaft is partially arranged in a bush-like section of a compressor block, wherein, viewed in radial directions normal to the first direction and pointing away from the axis of rotation, an interspace is formed between the second stator section and the compressor block, in which interspace the second rotor section is arranged at least partially, wherein, viewed in the radial directions, a gap is formed between the second rotor section and the compressor block, characterized in that for the lubricant at least one through-hole is provided in the compressor block between the crankshaft and the gap, wherein an accumulation volume for accumulating lubricant is provided between a lateral surface of the crankshaft and an inner wall of the bush-like section of the compressor block, wherein the accumulation volume is fluidically connected with the at least one through-hole, and wherein the at least one through-hole fluidically connects the accumulation volume and the gap. - a hermetically encapsulated compressor housing, - an electric drive unit arranged in a housing interior of the compressor housing and comprising a rotor rotatable about an axis of rotation, a stator, and a crankshaft, which crankshaft is connected to the rotor in a torque-proof manner, - a piston-cylinder unit arranged in the housing interior and comprising a piston, which piston is movably arranged in a cylinder of the piston-cylinder unit and can be driven by the crankshaft to compress refrigerant, - a lubricant receptacle for conveying lubricant from a lubricant sump arranged in a bottom area of the compressor housing vertically via the crankshaft, when the refrigerant compressor is in an operating state, wherein viewed in a first direction the stator extends from a first stator section to a second stator section and the rotor extends from a first rotor section to a second rotor section, wherein the first direction is parallel to the axis of rotation and points from the bottom area to the piston-cylinder unit, wherein the crankshaft is partially arranged in a bush-like section of a compressor block, wherein, viewed in radial directions normal to the first direction and pointing away from the axis of rotation, an interspace is formed between the second stator section and the compressor block, in which interspace the second rotor section is arranged at least partially, wherein, viewed in the radial directions, a gap is formed between the second rotor section and the compressor block, characterized in that for the lubricant at least one through-hole is provided in the compressor block between the crankshaft and the gap, wherein an accumulation volume for accumulating lubricant is provided between a lateral surface of the crankshaft and an inner wall of the bush-like section of the compressor block, wherein the accumulation volume is fluidically connected with the at least one through-hole, and wherein the at least one through-hole fluidically connects the accumulation volume and the gap.