supply of procurement of angular contact ball bearing single row, size (60x130x31)mm etc.procurement of angular contact ball bearing single row, size (60x130x31)mm etc.,angular contact ball bearing single row, size (60x130x31)mm to t skf 7312 becbj. it is used in 25 kw alternator. the material should be of any rdso approved makes as mentioned in bill of material of rdso specification no. rdso/pe/spec/tl/0056-2004 (rev.-0) with amdt. no. 1 & rdso lett er no. el/7.1.38/1 dtd. 21.12.2017 (copy enclosed), i,e. m/s. skf (europe /india), m/s fag (germany), m/s. nsk (japan). [ warranty period: 30 months after the date of delivery ] ]