Liebherr will present its A 922 Rail Litronic excavator with hydrostatic drive and LIKUFIX quick coupling system at Bauma 2022, the company has announced.
The A 922 Rail Litronic is a dual-purpose machine that can be operated either on the road or on railway tracks. The machine has an operating weight of around 23,000 kg, and meets the requirements of exhaust emissions standard Stage V while its 120 kW / 163 hp engine is matched to its hydraulic system.
The concept consists of a Liebherr variable displacement double pump with a volume of 2×220 l/min and independent control circuits. As a result, “high-performance, hydraulic attachments can be operated independently of the working and travel movements of the machine,” says Liebherr.
With the new hydrostatic rail travel drive of the A 922 Rail two drive motors drive the rail-road excavator directly in the rail axis. This leads to lower tyre wear as there is no direct rail contact.
According to the company, in the trade fair configuration the machine is equipped with a standard gauge of 1435 mm but more track gauges will also be available in the future.
Another highlight of the A 922 Rail is the new quick coupling system LIKUFIX 33-9. With this quick coupling system attachments such as tamping units, mulchers with flaps or Liebherr stick extensions can be changed more efficiently from the operator’s cab due to the integration of the second high-pressure circuit, as well as the overflow oil line and lubrication line. “
Under the new LIKUFIX® 33-9 attachments which are equipped with the current quick coupling system LIKUFIX 33 can also be changed, Liebherr adds.