B639L REXNORD bearings 18S52E08E3;B639L,B639L weight,B639L size,B639L parameter 521H35C6000 weight,521H35C6000 size,521H35C6000 parameter,P2B-SCM-203 weight,P2B-SCM-203 size,P2B-SCM-203 parameter,B639L weight,B639L price,] drawing, Lead time price, Drawing parameters, Procurement lead t...