Derby Hydraulic 220,320 and 460 are antiwear types of hydraulic oils .They are blended from highly refined base stocks with anti oxidant, antiwear, anti rust and anti foam additives. These grades are recommended for circulation systems wherever lubrication characteristics are essential, particularly paper mills, plastic film calendars.These grades are also recommended for use in compressors, machine tools hydraulic and circulation systems and enclosed gear boxes which do not require EP type lubrications.