supply of spur gear for surface traverser cap. 80 ton lt helical gear for eot crane , spur gear for surface traverser cap. 80 ton as per drg. no. g/sd-1547.gear teet h should be hardened and profile ground between 50 to 60 hrc, with material certificate f rom govt. approved agency [ warranty period: 30 months after the date of delivery ] ] , lt helical gear for eot crane no-06 as per drg no-g/sd-1626 ,surface of gear te eth should be hardened between 50 to 60 hrc with material test certificate should be provided along with supply issued by nabl/govt.approved agency . qty -01 set (01 set consist s of 04 nos.) [ warranty period: 30 months after the date of delivery ] ]