LIEBHERR A904C CRAWLER EXCAVATOR

Technical Description

The Liebherr A904C is a versatile wheeled excavator engineered for high performance and efficiency in demanding construction environments. Powered by a Liebherr D934 S A6 engine delivering 143 horsepower (107 kW) at 2,000 rpm, this machine features a robust hydraulic system with a variable displacement swashplate double pump, providing up to 87.2 gallons per minute of flow and a system relief pressure of 5,076.4 psi. The A904C offers a range of boom and stick configurations, with maximum digging depths up to 21.7 feet, maximum reach along the ground up to 37.8 feet, and maximum loading heights up to 42.4 feet, depending on the attachment. The standard bucket capacity ranges from 0.2 to 1.4 cubic yards, with a reference capacity of 1 cubic yard. The machine’s operating weight is approximately 43,700 pounds, and it is equipped with a two-speed power shift transmission, delivering a top travel speed of 12.5 mph and a swing speed of 9 rpm. The undercarriage features a wheelbase of 9.1 feet, overall width of 8.2 inches, and a tail swing radius of 8.2 feet, with stabilizers extending the width to 13.1 feet. The A904C also boasts a ground clearance of 1.2 feet, a shipping length of 32.2 feet, and a shipping height of 10.4 feet, making it suitable for transport and maneuvering in confined spaces. Its advanced hydraulic and transmission systems, combined with a durable design, ensure reliable operation and productivity across a wide range of applications.