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.
198-5018 bearings are used in the reduction gearbox system of Caterpillar heavy machinery equipment：
1985018 BEARING Caterpillar parts fit:304.5, 305CR, 304CR, 305.5, 306
163-1656 163-1657 bearings are used in the reduction gearbox system of Caterpillar heavy machinery equipment：
1631656 1631657 SPECIAL TAPERED Caterpillar parts fit: 374F L , 365B L , 345B , 365C L , 374D L, 374F L.
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
