31Q7-10050: As I mentioned earlier, this is likely a part or model number specific to the excavator. Without additional context, it's difficult to determine the exact meaning of this specification.
K3V112DT-1DFR-9N62: This is the model number of the excavator's hydraulic pump. The K3V112DT-1DFR-9N62 pump is manufactured by Kawasaki Precision Machinery and is a variable displacement axial piston pump with a maximum flow rate of 423 liters per minute.
R250LC-9S: This is the model number of the excavator itself. The R250LC-9S is a mid-size hydraulic excavator manufactured by Hyundai Heavy Industries. It has an operating weight of around 25 metric tons and is powered by a Cummins QSB6.7 diesel engine, which produces 183 horsepower (136 kilowatts) at 2,200 revolutions per minute. The R250LC-9S has a maximum digging depth of 6.78 meters (22 feet 3 inches) and a maximum digging reach of 9.99 meters (32 feet 9 inches). It's equipped with a variety of features, including a rearview camera, an automatic climate control system, and a 7-inch color LCD monitor.
