Ball Bearing NBC 6305 LLU ( Part- I ) or SKF Ball Bearing 6305- 2 RS1 ( Part- I ) or FAG Ball Bearing 6305- 2RSR ( Part- II ) for Regulating Equipment ( ATD )- Three Pulley Type ( Modified ) as per RDSO Drawing No. TI/ DRG/ OHE/ ATD/ RDSO/ 00001/ 99/ 3 ( Drawing Enclosed ) to be followed. Make: NBC or SKF or FAG makes only accepted ]