with the lr series, liebherr offers a well-balanced programme of lattice boom crawler cranes. in the class below-300 metric tons, low transport weights, rapid self-assembly, optimum load capacity values across the entire ......with the lr series, liebherr offers a well-balanced programme of lattice boom crawler cranes. in the class below-300 metric tons, low transport weights, rapid self-assembly, optimum load capacity values across the entire working range and comprehensive operating information are among these cranes main functional features.