The LTR 11200 is predestined for the erection of wind power plants. The concept of a telescopic crawler crane on a narrow track crawler chassis is optimal for moving the crane fully erected over the narrow roads of the wind power parks. The telescopic boom, the Y-suspension, the lattice fly jibs and as far as possible the slewing platform too are adopted from the mobile crane LTM 11200-9.1, which has proven itself at the erection of wind generators already.