The Cat399 excavator, as a high-performance engineering machine, was one of the core concerns of many users during its actual operation.So, what is the fuel consumption per hour for the Cat399 excavator? This depends mainly on specific working conditions, operating methods and equipment maintenance conditions.In standard loads and normal working conditions, the Cat399 excavator may have a fuel consumption range of 25-30 litres per hour, but actual fuel consumption requires field measurements and calculations based on actual conditions.In order to better understand and control the fuel consumption of the Cat399 excavator, it is recommended that the operator perform standard operations, perform regular equipment maintenance and adjust the excavation model in conjunction with real-time operational conditions in order to achieve optimal work efficiency and economic balance.Further, for enterprises or individuals with long-term use of Cat399 excavators, an in-depth understanding and management of their average fuel consumption performance within one hour would not only help to save operating costs, but would also be one of the key factors in improving the economic efficiency of the project.In summary, the specific value of the 1-hour fuel consumption of the Cat399 excavator needs to be analysed on a case-by-case basis, while optimizing operational techniques and maintenance management is an effective way to reduce the time consumption per unit while ensuring engineering efficiency.