The newest generation of the HS 8050 HD duty cycle crawler crane with 50 tonnes lifting capacity has an enhanced diesel engine which complies with the officially required exhaust levels. Noise emission and fuel consumption is substantially reduced, resulting in increased efficiency during operation. Furthermore the optimised board hydraulics delivers higher turnover performance than its predecessor model HS 835 HD. The HS 8050 HD is successfully established in the market as a material handling machine for dragline or clamshell operation. The hydraulic driven crawler crane is also successfully used for foundation work with a slurry wall grab or a casing oscillator attached.