What Are the General Materials of Gearbox Parts?

Those materials used in gearbox outer parts (shell) and inner parts are different. Light vehicle gearbox shells are generally made of cast aluminum, while heavy-duty car with the gearbox shell made from cast iron.

Automotive shift system parts including gearbox gears, drive shafts are commonly made of steel, but also use powder metallurgy (low speed part).

What are the general materials for gearbox gears?

Shift system parts like the gears rely on their own structural size and material strength to withstand external loads, which require the high strength and toughness, as well as good wear resistance. Due to the complex shape of the gear, it requires high gear accuracy, and also quality materials with good craftsmanship.