LIEBHERR A974B CRAWLER EXCAVATOR

Technical Description

The Liebherr A974B excavator is a high-performance wheeled material handler designed for versatile heavy-duty applications. It features three boom and stick configurations tailored for material handling tasks: Option 1 includes a 12m boom with a 9m stick offering a maximum digging depth of 23 ft, a maximum height of 72.2 ft, and a maximum reach along the ground of 68.9 ft; Option 2 comprises a 12m boom and 10.5m stick enabling a deeper reach up to 29.6 ft, a height of 78.8 ft, and ground reach of 72.2 ft; Option 3 pairs the 12m boom and 9m stick with a clamshell model 75B, maximizing the digging depth to 36.1 ft, a height of 62.4 ft, and a ground reach of 74.7 ft. The excavator has a ground clearance of 1.5 ft, a shipping height of 18.4 ft, a shipping length of 57.6 ft, an undercarriage width of 13.5 ft, and an upperstructure clearance of 7 ft. Powered by the Liebherr D 9408 T1-E engine, an 8-cylinder turbocharged diesel with 1049.7 cubic inches displacement, it delivers a robust gross power of 490 hp (365 kW), providing exceptional torque and efficiency. The hydraulic system uses two Liebherr variable flow swash plate pumps with a combined pump capacity of 131.1 gallons per minute, ensuring responsive hydraulic performance. Fuel and hydraulic fluid capacities are 338.2 gallons and 317.1 gallons, respectively. Weighing 259,300 lbs without attachment, the machine has a maximum travel speed of 5.6 mph (8 kph). It runs on a wheeled undercarriage with 1600mm diameter tires and 600mm width arranged on an 18.3 ft wheelbase, offering stability and mobility in diverse working conditions. This model is optimized for advanced material handling with robust construction and versatile reach capabilities suitable for large-scale excavation and handling tasks.