procurement of spares for various types of greaves makes gearboxes installed at 4x210 mw chp i sgtps mppgcl birsinghpur procurement of spares for various types of greaves makes gearboxes installed at 4x210 mw chp i sgtps mppgcl birsinghpur , spares for greaves makes gear box h2-225, ratio 15.4:1 , first stage pinion with bearing sleeve & keys , first stage wheel , second stage pinion with key & distance pieces, , output wheel ( second stage wheel ) , output shaft , complete casing along with its associated parts like fasteners, dowels, all end covers, set of oil seal, set of shims, fan etc. , spares for greaves makes gear box h2-280, ratio 15.4:1 , first stage pinion with bearing sleeve& keys , first stage wheel , second stage pinion with key & distance pieces , spares for greaves makes gear box b3 sf 280 ratio 15.4:1 for s / r boom conv. , input pinion with matching wheel ( bevel gearpair ) , second stage pinion , final pinion ( third stage pinion ) , output wheel ( third stage wheel ) , output shaft , complete casing along with its associated parts like fasteners, dowels, all end covers, set of oil seal, set of shims, fan etc