Doosan DX350 excavator replaces the current DX340 with more horsepower and breakout force, and improved fuel efficiency. The Doosan Tier III engine delivers 271 horsepower. Arm digging force is 39,460 pounds; bucket digging force is 54,010 pounds. The 77,600-pound machine features polymer shims and redesigned bushings that enable greasing intervals of 250 hours.