... combine-harvester, mining machinery, excavator, bulldozer, scraper machanical, drilling machine, and special machinery, for Komatsu, Caterpillar, Kobelco, Hitachi, Sumitomo, Hyundai, Yuchai ... onPitch range: 90-350 mmStructure type: Dry, sealed, polyurethane seals and lubrication type No.Heavy equipment(excavator,crane,bulldozer,dump truck, ...