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.
4224213 bearings are used in the Excavator Final drive system of Hitachi ：
4224213 BRG.;ROL. Hitachi parts CX1000, CX1100, CX1800, CX900, EX1100, EX1100-3, EX1200-5, EX1200-5C, EX1200-5D, EX1200-6, EX800H-5, HR1200SG, KH850-3, TL1100-3, ZX1800K-3, ZX800, ZX850-3, ZX850H
279-0344 bearings are used in the reduction gearbox system of Caterpillar heavy machinery equipment：
2790344 BEARING AS-TAPERED ROLLER Caterpillar parts fit:336 , 340 , 336F , 336D2 L , 340F, 335F L ,345 GC, 330D, 330C, 328D L
39Q6-42120 bearings are used in the final drive Bearing system of HYUNDAI heavy machinery equipment：
39Q6-42120 HYUNDAI BEARING parts
Apply to R250LC9, R250LC9A, R260LC9S, RB220LC9S, RB260LC9S, RD210-7, RD210-7V, RD220-7, RD220LC9
207-27-71330 bearings are used in the Excavator Final drive system of KOMATSU：
207-27-71330 BEARING KOMATSU parts： PC290-8K，PC350-8,PC300-8,PC270-8,PC290LC-10,PC360-7,PC308USLC-3E0,PC270-7,PC340LC-7K,PC350-7E0
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
