218-4247 bearings are used in the reduction gearbox system of Caterpillar heavy machinery equipment：
2184247 BEARING Caterpillar parts fit:311C, 311D LRR, 311F LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313F,313D, 313D2, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR
