Biggest excavators Komatsu - Liebherr - Hitachi working.\rbr\rbrExtreme Machines: The Liebherr R 9800 ist the biggest Hydraulic Excavator in the world. With its bucket capacity of 47,5m³, this 800 Ton Monster Machine R .\rbr\rbrEXTREME MACHINES in Action! The 1000 Ton Monster O&K RH 400 has a little brother: The O&K RH 200 weighs 525 tons and delivers 2520 horsepower!\rbr\rbrMore FAK: Facebook: *** LINKS *** MV Blue Marlin .