New generation high performance pipelayer launches

Liebherr presents its first generation 6 pipelayer at Conexpo 2017. The new RL 56 Litronic provides a lifting capacity of 72 tonnes / 158,733 lbs. and comes with a state of the art Diesel engine, complying with Tier 4f /Stage IV emissions standards.

Liebherr pipelayers are known for providing maximum economy. Accordingly, the machines were designed with special attention to ensuring long component service lives, low service costs and low fuel consumption.

The RL 56 Litronic is driven by a Tier 4f Liebherr Diesel engine with an engine output of 210 kW / 281 HP (SAE J 1349). For this engine generation, the entire combustion process has been optimized to minimize the particulates within the engine. The innovative Selective Catalytic Reduction technology (SCR) means no Diesel Particulate Filter (DPF) is required. The ease of maintenance and low fuel consumption are a few of the resulting customer benefits. 

The robust Liebherr diesel engines operate at constant low 1.800 rpm, a very economical speed. This feature reduces fuel consumption, is important for a long component life of the engine, and combined with the demand controlled hydraulic cooling system it keeps the noise level to a minimum. Additionally, the Generation 6 pipelayers come with the selectable ECO-mode, a fuel-efficiency control system developed by Liebherr to optimize the engine speed if full output is not required. The load-sensing implement hydraulics supply only the exact amount of oil needed. This protects the components and saves fuel.

Liebherr oils and lubricants are specially formulated for the harsh operating conditions of pipelayers. The special properties of these oils make the new RL 56 have exceptionally long change intervals for operating fluids. Depending on the nature of the work, and provided that regular quality checks are performed, the hydraulic fluid change interval can be as long as 8,000 hours of operation. These features keep the service and maintenance costs low.

Liebherr pipelayers are designed to provide maximum performance and handle the most difficult jobs. High lifting forces, outstanding maneuverability and heavy-duty components in the travel and working hydraulics ensure peak performance when laying pipelines.

In combination with the innovative hydrostatic travel drive, the powerful Liebherr diesel engine provides maximum power in every situation. Whether transporting pipe on soft soil, lowering the pipeline when travelling uphill, or when pulling heavy pipe-bending machines - the hydrostatic travel drive reliably provides the required power.

The compact arrangement of the travel drive components results in an extremely low center of gravity for the machine. Through use of the extra-long undercarriage, Liebherr pipelayers offer maximum stability, especially on inclines.

The favorable weight distribution and center of gravity extend the position of the counterweight and the extra-long undercarriage, making the maximum lifting capacities available over the entire working range.

A hydraulically powered winch permits step less and precise speed control of the load hook. The load is lowered reliably without any loss of force. As soon as the winch stops moving, the automatic safety brake is activated and holds the load securely.