This precision helical gear shaft is manufactured from 20CrMnTi, a low-alloy carburizing steel. Thanks to its outstanding hardenability and stable carburizing behavior, this material is widely adopted for small and medium-sized power transmission gear shafts.
Paired with carburizing and quenching heat treatment, the gear tooth surface gains elevated hardness for superior wear resistance, while the inner core of the shaft maintains good toughness. This structure enables the component to withstand torque and impact loads effectively and greatly lowers the risk of tooth fracture. Accordingly, material selection stands as a critical factor determining the service life of helical gears.
