We could manufacture the Crossed Roller Slewing Bearings with internal and external teeth or without teeth with high quality and precision. *Material often used:50Mn & 42CrMo *Forging Certificate:DNV Certificate *Heating treatment:By professional company *Packing:Standard exporting packing\ *Surface process:Anti-corrosion process with special tech. *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 Slewing Bearing,and after your confirmed we will quote you and make drawings for you. Thanks and regards!