POLYMER BASED PADS FOR LARGE THRUST BEARING OF HYDROGENERATORS IN HYDROELECTRIC POWER PLANT

摘要

This invention relates to a polymer based pads for large thrust bearing of hydrogenerators in hydroelectric power plant, having improved friction and wear resistance comprising a steel backing (1) consisting of plurality of thrust pads (7) being adhesively bonded (6) to said steel backing, the said pads having an inside diameter of 160 mm and outside diameter of 320 mm and is consisted of PTFE (polytetra fluoroethylene) composite having 40% PTFE, 55% Bronze and 5% graphite, the said pads resulting lower friction than the existing white metal pads (5) during start and stop operation of the generator and eliminating need of any supporting lubrication system. Fig. 4