In hydraulic or lubrication systems, the temperature of hydraulic or lubricating oil tends to rise due to factors like system overflow, unloading, and friction. When the temperature of the oil exceeds a certain range, it can result in issues like the aging of oil seal rings, hydraulic valve leakage, and abnormal working pressure. These issues impact production efficiency and product quality and can lead to oil degradation and even damage to working components. Oil cooling temperature control devices (hereinafter referred to as oil coolers) can effectively address these problems, enabling the main working machine to operate more reliably and efficiently.

Oil coolers are generally installed independently from the main machine's oil tank and are connected through inlet/outlet oil pipes. They often come with their own circulating oil pump or can be fitted with an external one. The function of the oil cooler is to cool the oil inside the main machine's oil tank, keeping it within a specified temperature range.