Automotive Crankshaft Part | 3D

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A crankshaft is a shaft driven by a crank mechanism, consisting of a series of cranks and crankpins to which the connecting rods of an engine are attached.[1] It is a mechanical part able to perform a conversion between reciprocating motion and rotational motion. In a reciprocating engine, it translates reciprocating motion of the piston into rotational motion, whereas in a reciprocating compressor, it converts the rotational motion into reciprocating motion. In order to do the conversion between two motions, the crankshaft has crank throws or crankpins[clarification needed], additional bearing surfaces whose axis is offset from that of the crank, to which the big ends of the connecting rods from each cylinder attach.