Having enough strength and stiffness and little deformation, to ensure that the moving spare parts in correct position. Operation well, Low vibration and noise.

Cast iron

Alloy steel

Forging steel

CRANKSHAFT STRUCTURE

Material / Tensile Strength - Elongation(L-δ) / Surface hardness (HRC)

1.ball-black lead alloy (Iron mold overhaul) / 800-3~860-5 (Map-%) / 23~28

To improve the crankshaft hardness of surface,it can be through the surface nitriding, hard nitriding, isothermal hardening.
The crankshaft hardness of surface after nitriding is HRC30~40,after hard nitriding is HRC40~50 and after isothermal hardening is HRC45~53.

2.ball-black lead alloy+surface hard nitrided(or HARDENING) / 850-3~900-6 (Map-%) / 40~50

3.Forging steel+ surface nitrided (or HARDENING) / 850-4~900-6(kg-%m㎡) / 45-55

The journal surface is wear resistant,so our crankshaft have sufficient strength and stiffness.

6BD1 Crankshaft

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