Thrust bearing, also known as thrust pad, which is used to balance the axial thrust of the rotor. To establish the expansion dead point of rotor, it ensures the axial clearance between the moving parts and static parts within designed scope. Thrust bearing use steel billet plus Babbitt metal as material. Babbitt metal will melt if shaft temperature reaches 110 ℃, increasing main shaft’s displacement space, to prevent the main shaft from high axial displacement which will cause dry friction in thrust bearing.
Thrust bearing also uses tin bronze, steel billet plus fluorine plastic (suitable for higher temperatures for its low friction coefficient, with no need for scraping, will not burn even fuel is cut off) as materials. Thrust bearing is widely used in steam turbines, hydro generators, water pumps and so on.