Engine Models: S4F, S4K, S6K (Mitsubishi Excavator Engines)
Part Type: Diesel Crankshaft
Material and Construction
Material: The crankshaft is typically made of high-quality forged steel. The forging process imparts excellent strength and durability to the crankshaft, enabling it to withstand the high torsional and bending loads generated during engine operation.
Heat Treatment: It undergoes a series of heat treatment processes to enhance its mechanical properties. This includes quenching and tempering, which improve the hardness, toughness, and wear resistance of the crankshaft.
Dimensions and Tolerances
Length: The overall length of the crankshaft varies depending on the specific engine model. For the S4F crankshaft, it could be approximately [X] mm, for the S4K it might be around [Y] mm, and for the S6K it could be [Z] mm.
Journal Diameter: The diameter of the main journals and connecting rod journals is precisely machined. The main journal diameter for the S4F could be within the range of [A] mm to [B] mm, for the S4K it might be [C] mm to [D] mm, and for the S6K it could be [E] mm to [F] mm. The tolerances on these diameters are maintained within very strict limits, usually within ±[G] mm, to ensure proper fit and operation with the bearings.
Throw Distance: The distance between the centers of adjacent crank throws (the offset that determines the piston stroke) is also specific to each engine model. For the S4F, it could be [H] mm, for the S4K it might be [I] mm, and for the S6K it could be [J] mm.
