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.
20Y-27-21260 bearings are used in the Excavator Final drive system of KOMATSU：
20Y-27-21260 BEARING KOMATSU parts：PC200-6, PC400LC-6Z, PC100L-6, PC200-8, PC200-7, PC210LC-6, PC220LC-6, PC220LC-7, PC230-6, PC300-6, PC350-6, PC400-6C, PC340NLC-6K
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
207-27-61310 bearings are used in the Excavator Final drive system of KOMATSU：
207-27-61310 BEARING KOMATSU parts PC250, PC250HD-6Z, PC300, PC300SC,PC300-5，PC300-6， PC310, PC340-6K，PC340, PC350，PC350-6
