The A 922 Rail Litronic from Liebherr is suitable for use on railway tracks and for road construction – worldwide. This railroad machine is also fast, thanks to the mobile undercarriage. A rail travel drive is mounted on both sides of the undercarriage. When entering the rails, the rail travel drive lifts the tyres to rail height. The inside wheels of the dual tyres ensure travel of the excavator on the tracks.
Liebherr has been developing railroad excavators for rail construction since 1967 and is a global market leader in this segment as an OEM manufacturer. The A 922 Rail Litronic was one of the machines presented at the company’s international trade press tour 2024, held recently in October in Germany. [Scroll down to watch a video of the A 922 Rail during the event].
Flexible use on road and rail
The hydraulic concept of the A 922 Rail consists of a Liebherr variable displacement double pump with independent control circuits. High-performance, hydraulic attachments can thus be operated independently of the working and travel movements of the railroad excavator. The delivery rate of the Liebherr variable displacement double pump has been increased to 2 x 220 l/min for better performance. The heavy ballast has also been redesigned to yield the best bearing load values with improved weight distribution and a more compact rear dimension of 2,000 mm.
Powered by a 163 hp engine, the A 922 Rail is designed for simple maintenance. All maintenance points on the machine are accessible from the ground. The new generation has simplified access to important components even further; for example, air, oil and fuel filters, the main battery switch, the central lubrication point for the undercarriage and the pilot valves for the hydraulic system are much easier to access.
The A 922 Rail is equipped with a spacious double cab featuring standard roll over protective structure (ROPS) and a modern interior design for greater operator comfort. The generous use of glass and standard rear and side cameras provide an excellent view of the working area and swing range.
Occupational safety is also very important in track construction. Liebherr therefore offers its own safety systems which are tailored to the machine requirements. The safety technologies include load torque, height and sway limitation and the virtual wall.
Ideal for tracks worldwide
The A 922 Rail is available with several undercarriage versions with different track widths and rail wheels, making it possible to use the machine on tracks worldwide. An independent variable displacement pump for the rail travel drive provides the best traction and safe propulsion at all times. Standard integrated brakes in the rail wheel shorten the braking distance in both the lowered and elevated position and thus enhance safety.
Liebherr also offers an extensive portfolio of attachments for the A 922 Rail to meet various construction site requirements economically and reliably. Among them is the new GMP 25 parallel gripper as well as the new rail clamp, which was specially designed for the gripper mechanism of the GMZ 22.
Another attachment for the A 922 Rail is a Solidlink 33-9. The new Solidlink 33-9 model adds further couplings to the fully-automatic quick coupling system, with all the advantages. The expansion of the couplings to include a second high-pressure circuit also enables the use of hydraulic attachments such as tamping equipment in rail construction, mulchers with flaps or Liebherr stick extensions. In addition, the Solidlink fully-hydraulic quick coupling system allows attachments to be changed quickly and safely from the operator cab.
