Liebherr LTM 1070-4.1

The Liebherr LTM 1070-4.1 is a modern 70-ton all-terrain crane built on a 4-axle carrier, offering a major upgrade in boom length and lifting capability compared to its predecessor. The crane features a 50-meter telescopic boom, providing nearly 20% more reach than the earlier LTM 1060/2. The boom comprises 1 base and 5 telescopic sections, each extendable independently using Liebherr’s rapid-cycle “Telematik” system. An optional swing-away jib between 9.5 m and 16 m, mountable at 0°, 20°, 40°, or 60°, increases the maximum tip height further.

The carrier is powered by a 6-cylinder diesel engine, the Liebherr D936L A6, producing 270 kW (367 hp) at 2000 rpm and 1700 Nm of torque. It meets modern emission standards including EU 97/68/EC and EPA/CARB. The drivetrain consists of a ZF 12-speed gearbox with AS-TRONIC automatic control, supported by a two-stage transfer case and hydraulically lockable differential.

All four axles are equipped with hydropneumatic suspension and hydrostatic steering, enabling smooth travel and maneuverability. The crane operates on 8 tyres (14.00 R 25), with drive and steering configurations adaptable for road and jobsite conditions. Maximum comfort and visibility are offered through a spacious steel cab, mounted on hydraulic suspension with internal shock absorbers, safety glazing, and sound insulation.

The superstructure is powered by its own Liebherr diesel engine for crane operation and features a diesel-hydraulic system with one axial piston pump and four control circuits. Crane functions such as hoisting, slewing, and boom operations can be executed simultaneously. The hoist gear includes a planetary gear system with spring-loaded static brake, and the slewing system includes axial piston motor with a free-to-locked slew brake.

The crane also features the LICCON system, Liebherr’s proprietary crane control system, which integrates joystick-operated functions, a load moment limiter, test system, and safety measures to prevent pipe and hose failure. The crane cab is ergonomically designed, tiltable, and equipped with full safety and control instrumentation, heating, and ventilation.

Standard counterweight is 10.7 tons, with an additional 3.8 t available for a total of 14.5 tons to maximize lifting performance. An optional 2nd hoist gear is available for two-hook operation or swing-away jib applications that require additional reeving.

Overall, the LTM 1070-4.1 offers a well-balanced mix of lifting power, reach, and road mobility, making it an ideal choice for mid-range all-terrain crane applications in construction, industrial, and utility work.