We could manufacture the Four-row Tapered Roller Bearings with high quality and precision. Application: Rolling mill etc. *Material often used:Gcr15 or Gcr15SiMn *Heating treatment:By professional company *Packing:Standard exporting packing *Surface process:Antirust process *Q/C:Advanced Inspection instruments *Size range:100mm-6000mm If you need the bearing,pls contact us with your detailed contacting way:email adress,fax No., Company name and contacting people.... We will reply you with our Questionnaire on the Roller Bearing,and after your confirmed we will quote you and make drawings for you. Thanks and regards!