This is a A-1733001 Ball Bearing PN: 1733001Main Description As Following : A-1733001 Bearing, Ball P.N: 1733001 Bore: .640"Bore Type: RoundInner Ring Width: .720"Outer Ring Width: .472"Outside Diameter: 1.8504" Stocked As: A-203KRR6-I , Crosses To: A-B11733001SM SIMPLICITY Found in Section & Models : Hay Tool Parts > Baler Parts, Vermeer BALER, ROUND: 504C Associated Items : New Also This is An Aftermarket Product And : Bore: .640" Bore Type: Round Inner Ring Width: .720" Outer Ring Width: .472" Outside Diameter: 1.8504"