7I-7619 bearings are used in the excavator slewing gearbox system of Caterpillar heavy machinery equipment： 7I7619 BEARING-ROLLER Caterpillar parts fit：330C, 330C FM, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 336D2, 336D2 L, 336E, 336E H, 336E HVG, 336E L, 336E LH, 336E LN, 336F L, 340D L, 340D2 L, 375, 375 L,385B,390F L,390D