procurement of spares of blade bearing of fd and pa fans installed at boiler of 1 x 500mw unit at sgtps mppgcl birsinghpur , spares for blade bearing assembly of pa fan ( model:-ap2-20 / 12 ) , simmer ring dia 45x65x7x0 . 5 , deep groove ball bearing 6208b / c3 , thrust ball bearing race ( rework ) 51408vabn , spherical plain bearing ge15c , spares for blade bearing assembly of fd fan ( model:-ap1-26 / 16 ) , distance ring d55 / 60x25 , simmer ring d60xd80x7 , grooved ball bearing 6211 , axial grooved ball bearing 5141iv , nut rd d100 l-50 m45x1 . 5 l46 , key 10x6x40 d22 l-50 , hex bolt m10x70 , p8 . 8 , hex nut m10 p6 , spherical plain bearing ge17c , o-ring 49 . 5x3