supply of procurement of single row deep groove ball bearing with two shields etc.procurement of single row deep groove ball bearing with two shields etc.,single row deep groove ball bearing with two shields, clearance c3, bearing no. 6309 z z c3 of size 45mmx100mmx25mm. it is used in 4.5 kw alternator. the material should be of any rds o approved makes as mentioned in bill of material of 4.5kw alternator of rdso specification no. rdso /pe/spec/tl/0054-2003 (rev.-0) with amdt. no. 1 & 2 & rdso letter no. el/7.1.38/1 dtd. 21.12.2017 (c opy 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 ] ]