supply of axle box bearing ( tapper roller bearing [ axle box bearing ( tapper roller bearing unit tbu-150, skf no 1639457a ) as per abb drg.no.1a 016-01494 rev-2 for wap5 loco. ( item reserved for rdso approved sources only ) ] axle box bearing ( tapper roller bearing [ axle box bearing ( tapper roller bearing unit tbu-150, skf no 1639457a ) as per abb drg.no.1a 016-01494 rev-2 for wap5 loco. ( item reserved for rdso approved sources only ) ] , axle box bearing ( tapper roller bearing unit tbu-150, skf no 1639457a ) as per abb drg.no.1a 016-01494 rev-2 for wap5 loco. ( item reserved for rdso approved sources only ) [ warranty period: 30 months after the date of delivery ]