Liebherr LTM 1500-8.1

The Liebherr LTM 1500-8.1 is one of the most iconic and successful all-terrain cranes ever built by Liebherr. First introduced at Bauma in 1998, this 500-tonne capacity crane redefined performance standards with its modular boom system and outstanding mobility. Throughout its 23-year production run, the crane achieved over 450 units sold globally, marking several important milestones in Liebherr’s crane manufacturing history.

One of the LTM 1500-8.1’s key highlights is its dual boom configuration. Customers could choose between a 50-meter boom version or an 84-meter variant. The 84-meter version, with its Y-guying system, greatly enhances lifting capacity and offers tremendous flexibility in high-reach applications. Both versions are supported by a range of lattice jibs, including a fixed jib (up to 56 m) and luffing jib (up to 91 m), enabling lifting heights up to 142 meters.

The crane is powered by a robust Liebherr 8-cylinder diesel engine, type D9508 A7, delivering 500 kW (680 hp) at 1,900 rpm. The drivetrain consists of a ZF TC-TRONIC 12-speed automatic transmission with torque converter, enabling smooth and efficient power transfer to its 16-wheel, 8-axle carrier. All axles are steered and suspended by hydro-pneumatic systems, ensuring optimal maneuverability even under tight site constraints.

The crane’s superstructure includes a Liebherr D936L A6 6-cylinder engine rated at 240 kW (326 hp), powering the hydraulic systems for hoisting, slewing, luffing, and telescoping operations. The LTM 1500-8.1 also features advanced electronics with LICCON2 control, supporting enhanced operator monitoring, safety diagnostics, and load moment limitation. A telescoping boom made of high-tensile fine-grain steel ensures high torsional resistance and long-term durability.

For lifting operations, the main hoist winch offers powerful axial piston motor drive with planetary gears and a spring-loaded brake system. The crane is equipped with a 135-tonne counterweight system, composed of a base slab and multiple add-on slabs for flexible configuration.

Transport-wise, the crane is optimized for efficient logistics. The base carrier and boom sections are designed within standard transport dimensions, and the ballast system can be split for road compliance. Additional equipment includes a range of lattice jibs, second and third hoist gears, guying systems for fixed or luffing jib setups, and tire configuration options for varying terrain conditions.

The LTM 1500-8.1 became a staple in heavy lifting applications across industries, from wind energy to infrastructure development. A notable milestone includes its delivery as Liebherr’s 30,000th mobile crane, which went to Grupo DPH in Mexico for wind turbine construction. Another highlight was the 400th unit delivered to Sarens Nass in Bahrain, emphasizing the global popularity and reliability of this flagship model.

After decades of service, production of the LTM 1500-8.1 was officially discontinued at the end of 2021. The final unit sold in the UK was delivered to Forsyth of Denny. Despite being succeeded by newer models, the LTM 1500-8.1 remains a benchmark for lifting capacity, design innovation, and performance in the 500-tonne class.