JS500
This heavyweight tracked excavator (between 46 tonnes and 50 tonnes depending on the specification) is powered by a Tier 2 Isuzu engine. A power output of 228kW means that this behemoth is equipped to deal with the heaviest earthmoving applications, but with a transportation width of less than 3m, the JS500 is also surprisingly portable
Source: http://www.constructionweekonline.com/article-30388-launch-pad-full-details-of-jcbs-next-gen-line-up/3/