Crankshaft bearing assembly

A crankshaft bearing assembly for a fluid-machine comprising reciprocating components, wherein the crankshaft bearing assembly comprises a shaft having a co-rotating first eccentric surrounded by a second eccentric, wherein the second eccentric is adjustable around the first eccentric, and wherein the second eccentric is surrounded by a bearing and a crankshaft bearing housing, the second eccentric being connected, by means of a coupling, to a shaft sleeve concentrically rotatable around the shaft, wherein the coupling comprises a carrier which co-rotates with the shaft sleeve, and wherein the carrier, at a radial distance from the center axis of the shaft, is provided with a slide bolt projecting into a groove in a slide casing, the slide casing being fixedly connected to the second eccentric.