Volvo L90-L120 and L180 loader camshaft , Iran

Quality, price and strength of volvo loader OE camshaft with chinese products

In comparing genuine OE stock Volvo loader camshafts to new Chinese aftermarket units, price differences are significant. Genuine Volvo camshafts for L90, L120, and L180 typically cost 2.5 to 3 times more than Chinese equivalents due to brand, certification, and traceability. OEM units are often priced in the range of 1200 to 1800 USD, whereas Chinese new units range from 400 to 700 USD. Material quality also differs: genuine parts use forged alloy steels such as 42CrMo4 with documented chemical and mechanical properties. Chinese camshafts may use lower grade steels with less rigorous heat treatment, resulting in yield strength variations of ±15 percent compared to OEM. These material differences directly influence fatigue resistance under cyclic loading.

Wear resistance under operating conditions shows clear divergence between genuine and Chinese units. Volvo stock camshafts typically achieve core hardness of 42–48 HRC and surface hardness up to 55 HRC after induction hardening. This yields a wear rate below 0.002 mm per 100 operational hours in controlled tests. Chinese new camshafts often exhibit core hardness of 35–42 HRC with uneven case hardening, leading to wear rates 20–35 percent higher under identical conditions. Journal surface finish on OEM parts is held below Ra 0.4 μm, reducing lubricant starvation risks Chinese surfaces often measure Ra 0.6–0.8 μm, increasing asperity contact and wear. Consequently, genuine camshafts provide longer service life and lower unscheduled maintenance frequency.