The component with the lowest price in the CRANKSHAFT schematic is the Key 6.3x6.3x43.
Parts such as the Crankshaft: Crank Shaft Comp., Key 6.3x6.3x43, Brg,ball 30x62x16, Crankshaft Comp.( are included in the Gx270\qhq4_a\14zh90e9 Crankshaft parts fiche.