The mainstay of every daily rental crane fleet, hydraulic boom truck cranes offer quick set-up along with a long reach, high capacity booms and excellent highway speed travel capabilities. Generally stronger than a boom truck these cranes can lift up 150 US tons. The most common hydraulic truck cranes on the market are 40-50 tonners which can provide lifting heights up to 200 feet. These cranes have two parts: the carrier, often referred to as the Lower, and the crane and enclosed operators cabin which includes the boom, referred to as the Upper. The modern hydraulic truck cranes are usually single-engine machines with the same engine powering the undercarriage and the crane, however some models have separate engines powering the lower and the upper.