Gear failures of planetary gearbox of side gear reducer on the tractor.

Trošenje se definira kao postupni gubitak materijala s površine krutog tijela uslijed dinamičkog dodira s drugim tijelom, fluidom ili česticama. U ovom radu analizirano je trošenje zupčanika planetarnog prijenosnika bočnog reduktora traktora Fendt 936 Vario. U radu su opisane karakteristike traktora te mehanizmi trošenja kojima su izloženi zupčanici planetarnog prijenosnika. Provedenom analizom utvrđeni su najvažniji oblici oštećenja zupčanika - lom dijelova zupčanika, jamičenje (pitting) bokova zuba, plastična deformacija zuba i korozijsko oštećenje zupčanika. Ukazano je na njihove karakteristike i moguće uzroke njihovog nastanka. Također su opisane preventivne mjere koje su mogle spriječiti ili umanjiti nastalu štetu. U zaključku je ukratko opisan nastanak i napredovanje utvrđenih oštećenja na zupčanicima, a ukazano je i na važnost redovite kontrole i kvalitetnog održavanja zupčanika.Wear is defined as gradual loss of material from the rigid body's surface during its dynamic contact with another body, fluid or fragment. The planetary gearbox' wear of Fendt 936 Vario tractor's lateral reductor is in the focus of this paper. The paper outlines the tractor's characteristics and wear mechanisms that affect planetary gearbox' gears. The carried analysis has identified the most important forms of gear damage - the fracture of the gear parts, pitting of the teeth flanks, plastic deformation of the teeth and corrosion damage of the gear. The characteristics and possible causes of their occurrence are indicated. Moreover, precautionary measures which could have prevented or diminished the resulting damage are also described. The conclusion briefly discusses the occurrence and progression of established breakage on the gears and points to the importance of regular control and high-quality maintenance of gears