Caterpillar has turned the 5080 hydraulic excavator into the 5090B Front Shovel. The new machine features more engine horsepower, higher flow, greater digging forces, higher swing torque, faster swing speed, more drawbar pull, and larger bucket sizes. It is designed to work with trucks in the 40- to 70-ton size classes. Six different bucket options range in size from 6.0 to 7.5 cubic yards. The unit features 500-hour maintenance intervals for the engine oil, oil filter and fuel filters. According to Caterpillar, the 5090B has the highest productivity per hour in its size class. Estimated list price: $1,000,000.