... of 8-24ton normal excavators, e.g. Caterpillar, Hitachi, JCB, Volvo, Komatsu, Kobelco, Daewoo, Doosan, Sumitomo and so on. In this ... joint and swing bearing. We will design mounting frame for connection of upperstructure and undercarriage.1. PU200 Pontoon Chassis ... motor, 3 chains 3. ISO9001 Certified Manufacturer PU200 pontoon undercarriage for amphibious excavator, 3 chains track, fit to 18-20ton ...