The bearing bush was subjected to a surface hardening for
the production of a surface with very high wear strength. This hardness method
usually gets inductive but also by means of burner, carried out. Aim is a hard,
wear resistant surface while the core is having a height ductility. Many construction
elements are used only at the surface on wear and need a tough core to absorb the
strengths. The bearing bush consists of the material 1.3505 (100Cr6).