A hydraulic filter protects the components of a hydraulic system against damage which is caused by contamination of oil and other fluids which are used in the system. This is done by continuous filtering of contaminating particles. Thus, a good hydraulic filtration system can increase the life of the components of a hydraulic system and keep it contaminant free. Types of Hydraulic Filters There are a several types of hydraulic filters, which include — bag, screen, and magnetic filters. The bag filter is made up of a cloth bag through which the hydraulic fluid is passed. The contaminants (being solid) are not to flow through the bag. This is particularly useful in the filtering of particles like dirt and rust which are