Abstract: A reciprocating piston compressor (100) includes a crank casing (10). The reciprocating piston compressor (100) includes a crankshaft (11), a piston rod (12) and a crosshead (13). The crosshead (13) and the piston (23) are actively connected to one another by way of a connecting rod (24). The connecting rod (24) is fixedly restrained on the crosshead (13) and on the piston (23).