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A channel baler including a pressure channel, a plunger located in the pressure channel, a thrust crank drive for reciprocating the plunger in the pressure channel, and an element which provides for elastic yielding of at least one element of a pressure system including the pressure channel, the plunger and the thrust crank drive, in an axial direction by a path corresponding approximately to a thickness of a compressed bale upon a plunger power exceeding a predetermined value.