Tender For supply of articulation bearing sub assembly for outer end coupler drg. no. esc: 40 sk-3021 (4) w sf: 40-sk - 1960(3) or equivalent part nos. of rdso approved firms confirming to rdso spec no. 61-b- 36 rev-68-1 with amendment no.1 of oct-2016. [ warranty period: 30 months after the date of deliv ery ]