Liebherr R 926 and R 938 Generation 8 crawler excavators have higher engine power and a heavier counterweight for higher bucket capacities, compared to predecessor models. A modified piece at the top of the boom leads to better performance and equipment forces with reduced operating weight of the machine. Another feature is the optimized load curve, which yields reduced fuel consumption. These machines have been specially designed to provide extra comfort and safety for the operator, as well as optimum ergonomics and performance on the job site.