Liebherr is introducing a new 250-tonnes class excavator. The R 9250 is the valiant successor to the R 994 Litronic, which has been in production since 1986 and has enjoyed international success with more than 260 units sold.
Technologies already proven in the large mining models have been incorporated into this new excavator – in particular, the advanced design of the electronic, electrical and hydraulic systems and the robust and durable specification of the mechanical sections and constructional steelwork. In designing and developing this new production machine, Liebherr engineers have drawn on many years of experience gained from the deployment of the company's excavators throughout the world.
The R 9250 is powered by a 12-cylinder Cummins turbo-charged diesel engine rated at 960 kW/1,290 hp. The standard version of this new large excavator is equipped with a 9 m gooseneck boom, a 4 m stick and a 15 m³ backhoe or face shovel bucket.
With a 15% larger bucket capacity than the R 994 Litronic which it supersedes, 42 % higher swing torque and exceptional digging capabilities, the 250 tonnes R 9250 is set to deliver even greater productivity. Only three bucket loads are required to load an 80 tonnes dump truck, or four to five bucket loads for a 120 tonnes dump truck.
Starting with the R 9250, Liebherr is adding a new model designation to its mining excavator programme. The initial "9" continues to be the product identifier number for hydraulic excavators but this is now followed by a three-digit number representing the operating weight category for the particular excavator.
