Bearings,as important components in contemporary mechanical equipment,mainly support the mechanical rotating body,which can reduce the friction coefficient during its movement and ensure its rotation accuracy.
4321887 bearings are used in the Excavator Final drive system of Hitachi :
4321887 BRG.;ROL. Hitachi parts CHR70, EX100-2, EX100-3, EX100-3C, EX100-5, EX100-5 JPN, EX100M-5, EX120-2, EX120-3, EX120-3C, EX120-5, EX120-5 JPN, EX120-5HG, EX120-5LV JPN, EX120-5X, EX120-5Z, EX120K-2, EX120K-3, EX120SS-5, EX130H
VOE14535154 bearings are used in the EC700B Hydraulic pump bearing system of VOLVO heavy machinery equipment:
VOE14535154 BEARING Volvo parts
EC700B, EC700BHR, EC700C, EC700CHR
607 pulley bearing with outer coated POM ,the inner bearing is Chrome steel GCr15 ,we also can produce with customzied size ,material as your requirement .