With Yanmar engine, XE80DA has sufficient low-speed torque reserves, strong power, good fuel economy, low noise and low vibration. With the large displacement electronically controlled main pump, the whole oil consumption is low. It is easily capable of heavy-duty excavation, breaking and other harsh working conditions with strengthened working device, the service life is increased by more than 15%. The bucket capacity is increased, which improves the excavation efficiency. Increased wear-resistant of plate material increases the service life of the bucket by more than 10%. The high-torque automatic two-speed motor can automatically switch the walking gear according to the driving resistance, the walking operation efficiency is higher.