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Hydraulic filters keep hydraulic fluids in an equipment free of contamination. Filter segment is developing further with a range of filters with new materials being introduced in the market. <p></p><p> Without the use of a filter, fluid power systems are incomplete. Hydraulic filters keep the hydraulic fluid contaminant free. Modern mining and construction equipment incorporate state-of-the-art technology that requires advanced filtration to maximise performance and reliability. OEM filters are designed specifically to achieve superior protection at extended maintenance intervals. Filters incorporate many patented designs and innovative filtration media not found in aftermarket filters. </p><p><span style="font-weight: bold;">MB Sahni, Chairman-cum-Managing Director, Elofic Industries</span> explains, 'Hydraulic filters are used in the torque converter, transmission, steering and hydraulic systems of most machines. These systems have both high pressure and high temperatures. Hydraulic filters act to remove small particles caused by wear and tear in sliding components and plate lining. The wrong filter with a weak centre core can cause a filter to collapse and spread contamination throughout the system. Filters are designed to handle temperature and pressure variations within the hydraulic systems.<span style="font-size: 13.3333px;">'</span></p><p>According to him, the industry mostly uses two types of filters, a hybrid and a fully synthetic. The hybrid media is 75 per cent paper and 25 per cent micro fibre. The newest filter is 100 per cent micro fibre. Now filter manufacturers have begun to pay more attention to reducing pressure loss because of the potential cold start issues. Many OEMs have found the premature wear and tear on their equipment, which can be attributed to unfiltered oil flowing through their systems during bypass events, such as pressure loss during cold starts.</p><p> <span style="font-weight: bold;">Features and benefits</span><br /></p><ul><li>The synthetic filter used in most of the newer equipment has an exchange interval of 1,000 hours and extends the hydraulic oil change interval from 1,000 hours to 2,000 hours, 5,000 hours on excavators. </li><li>Synthetic filter lasts four times longer than conventional filters and twice as long as hybrid filters.</li><li>Double-wire reinforced to keep the media in place under high pressure fluctuations that are typical with hydraulic systems.</li><li>Most older model excavators and wheel loaders can be retrofitted to utilise this hydraulic filter technology.</li></ul><p> <span style="font-weight: bold;">Technology trends</span><br />New materials have been introduced in filters recently to improve the filter performance. Sahni elaborates, 'Emerging trends, which have a direct impact on the dynamics of the hydraulic filter industry, include the introduction of new micro glass materials, a unique six layer design that delivers 50 per cent more dirt holding capacity, and development of new cyclone effect technology.'</p><p> <span style="font-weight: bold;">Looking ahead</span><br />Hydraulic filters support the efficiency and long life of industrial equipment by removing micron size dusts and particles from the hydraulic fluid in the heart of the machinery. Hydraulic filters will continue to support the professional operators of construction and industrial equipment to protect them from danger in their work under severe conditions.</p>