A Hydraulic Oil Cooler is quite simply a device used for the cooling of Hydraulic Oil, usually in Hydraulic Power Packs but they can also be used on Power Washers, Engines and almost anything where there is hot oil to be cooled.

Coolers for hydraulic fluids normally use either water or air as the heat transfer medium. These two types are often referred to as oil-to-water and oil-to-air coolers.

Coolers can prevent overheating and extend the service life of your hydraulic system. However, smaller hydraulic systems with lower operating temperatures can often be cooled through natural convection. If natural convection is not enough, it becomes necessary to add a cooler.