Used Doosan DX500 excavator | No. 24530-3 This DX500 is very cost-effective among the same-class models. The mechanical quality and performance of this DX500 are stable. Equipped with a direct injection engine, it can be used in any harsh working environment, and the cost of later maintenance and even repair is low. There are only a few popular and reliable brands and models among large excavators reaching 50 tons. This DX500 will not let you down.