Ar Engineering

Other Details

We are amongst the leading manufacturers of industrial oil cleaning system that are designed in line with international quality standards. Generally, the oil gets deteriorated by contamination of foreign particles, moisture (free & dissolved) and oxidation sludge that affects the performance of the equipment. We design special modules that are used to remove the particular types of contaminations. The purification system comprises filtration and purification stages for economical operation.

In pre-filtration stage, coarse particles are efficiently removed using cleanable, washable elements. In intermediate stage, the major portion of the contaminants is removed by selected filter elements that are suitable for oil purification. During the final stage, fine contaminants are removed by special elements to suit the final application and purification level. The free moisture removal is carried out by gravity separation methods such as centrifuge, spirafuge, or by using coalescer elements. Dissolved moisture is partially removed by coalescer elements and finally by the vacuum treatment.

The following modules are used in oil purification systems:

Pre Filters:

    Strainers: With suitable size perforated or wire mesh element, these are used to remove major portion of suspended particles
    Magnetic Filters, Separators: These are used to remove magnetic impurities.
    These are used especially to filter the cutting oil, coolant where the magnetic dirt contaminate oil during processes such as grinding, honing and reaming
    Spirafuge: These effectively remove free moisture and coarse suspended particles from oils. In this, the oil is given the spiral path around the filter strainer so that vortex is formed at the bottom enabling the heavier particles and water gets collected at the bottom and can be removed periodically by opening drain valve. The dirt is collected on the surface of the central filter element, which is carried by the oil to bottom when drain valve is opened so the filter is cleaned without opening the filter chamber

Fine Filters:

    Coalescer Filter, Separator: These filters remove free as well as emulsified water from the oil. Depending on the type of oil, water can be removed to 50 - 100 ppm.
    As applied to the technology of oil water separation, coalescence is usually accomplished by a first stage of fibrous media that enable oil to pass through but attracts and "stores" the emulsified water until the tiny particles unite, or coalesce, to become large droplets of water. This free water is then released to a second stage utilizing a water repellant media. It is provided with water drain tank, for removal of separated water periodically. Pressure gauge is also provided to indicate the clogging of filter


Fine Filter Elements: These remove the particles down to desired level as per the application. Depending on the viscosity, working temperature & pressure, filtration level and oil compatibility the type of filter media can be selected. Some of the types of filter media are molded cellulose, pleated paper and stainless steel. Besides selecting proper filter media, the fitment of the elements is very important to ensure the proper filtration. Differential pressure gauge or pressure gauge before filter is required to indicate the clogging of filters so that filter element can be used to appropriate capacity.

Centrifugal Filter: In centrifugal filter, oil passes through a rotor spinning at high speed to ensure particles in the oil are deposited on the inner wall of rotor to form a dense cake. It is particularly more appropriate for permanent fitting on the oil tank. This filter has more dirt holding capacity as compared to normal depth filter of fine micron rating. Centrifugal separation is most ideal way to remove small hard metallic particles.