207-27-51220 bearings are used in the Excavator Final drive system of KOMATSU：
207-27-51220 BEARING KOMATSU parts PC250LC-6LE PC300-5 PC300-3 PC300-5K PC310-5
170-09-13220 bearings are used in the Bulldozer Bearing system of Komatsu heavy machinery equipment：
170-09-13220 BEARING KOMATSU parts D150A, D155A, D155C, D155S, D155W
208-27-51240 bearings are used in the Excavator Final drive system of KOMATSU：
208-27-51240 BEARING,BALL KOMATSU parts PC380LC-6K, PC380LC-7K, PC400-6Z, PC400-5, PC400-6Z,PC400LC-7,PC410LC-5,PC450-6,PC600LC-6A
170-09-13220 bearings are used in the Bulldozer Bearing system of Komatsu heavy machinery equipment：
170-09-13220 BEARING KOMATSU parts D150A, D155A, D155C, D155S, D155W
208-27-71210 bearings are used in the Excavator Final drive system of KOMATSU：
208-27-71210 BEARING KOMATSU parts PC400LC-8, PC450-8, PC550LC-8, PC490-10,PC400-7，PC270LL-7L，PC300-7, PC300HD-8，PC350HD-8, PC390LC-10，PC450LC-7,PC490LC-10
06032-01021 bearings are used in the Bulldozer Bearing system of Komatsu heavy machinery equipment：
06032-01021 BEARING KOMATSU parts D155A, D155S, D155W, D355A, D355C, D455A, HD320, WS23S
209-27-61360 bearings are used in the Excavator Final drive system of KOMATSU：
209-27-61360 BEARING KOMATSU parts： PC1250LC-8，PC700LC-8E0,PC1250-7,PC650-5,PC710-5,PC750SE-6,PC750LC-7,PC800SE-8,PC850-8
7J-3297 bearings are used in the Bulldozer Self-calibrating spherical bearing of Caterpillar heavy machinery equipment：
Caterpillar ：TRACK-TYPE TRACTOR D8R D8R II D8T D9R D9T
