This oil pump is manufactured in strict accordance with factory standard specifications, delivering reliable performance for heavy-duty excavation operation scenarios including construction sites and open-pit mining. It is engineered with high-strength alloy materials to achieve excellent structural durability and heat resistance, which can adapt to long-term high-load operation under extreme temperature and pressure conditions. The precision-machined internal components ensure stable lubricating oil delivery efficiency, effectively minimizing wear of core moving parts inside the engine. The pre-assembled sealing structure provides reliable physical blocking of external particulate impurities, maintaining flow integrity of the lubrication system to avoid abnormal component damage caused by contaminant mixing. It adopts unified interface specifications, which can realize direct replacement without secondary modification, effectively reducing the time spent on equipment maintenance and downtime loss.