Hydraulic oils are generally suitable for hydraulic systems, circulations and other industrial applications (light presses, heavy duty ling boxes, compressor types, closed gear boxes, anti-friction bearings, and hydraulic transmission systems) and should be anti-oxidation And wear resistant, also have excellent filtration ability. Most of the hydraulic oils available have the ability to easily separate the air from the oil and also have antiseptic properties. Hydraulic oils are mainly produced at the levels of HLP and HP quality.
Hydraulic oils are available in grades 22, 32, 46, 68, 100, 150, 220, 320. The equivalent table for hydraulic oils is as follows.