Liebherr LTM 1120-4.1 all-terrain crane is a 135-ton unit and rests on a four-axle carrier. The telescopic boom extends to 217 feet, 20 feet farther than the predecessor LMT 1100-4.2.
Lifting capacity is 19,800 pounds. With a 23-foot lattice boom extension and a double folding jib of 35 to 62 feet, the crane can reach to 308 feet with a 210-foot radius.
VarioBallast on the LTM 1120-4.1 enables the crane to operate with a ballast radius of 12.6 or 15.6 feet. The ballast radius can be reduced by 3 feet quickly and easily using standard, mechanically adjustable ballasting cylinders. The large ballast radius delivers higher performance and cost benefits by reducing ballast transport as many crane jobs can be completed using the system with fewer counterweights.
A 449-horsepower Liebherr diesel engine is coupled with a ZF-TraXon gearbox to transmit power to the crane’s axles.
ECOmode is now standard on Liebherr mobile cranes with a load-sensing control system: the crane controller calculates the perfect engine speed for the working speed selected using the control lever to avoid unnecessarily high engine speeds. That also saves fuel and makes the engine quieter.