The Asia Miner

JAN-MAR 2019

The ASIA Miner - Reporting Important Issues to Mining Companies in the Asia Pacific Region

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the asia miner • volume 16 • issue 1 42 SUPPLIER NEWS Pumping slurry can wreak havoc on gland seals, making them prone to leakage. Plant operators need to be vigilant against gland seal leakage to prevent premature bearing assembly failures leading to downঞme. In addiঞon to contaminaঞon ingress from leaking gland seals, incorrect bearing assembly lubricaঞon volume is another factor to be mindful of. If a pump bearing assembly is over greased, a build-up of excess grease in the bearing assembly cavity can cause grease churning, resulঞng in elevated bearing temperatures. This leads to rapid degradaঞon of grease and subsequent bearing failure. Conversely, if the bearing assembly is under greased, the loss of fluid film lubricaঞon will cause premature bearing wear. When this occurs, the remaining grease will experience accelerated degradaঞon due to internal contaminaঞon caused by abrasive wear parঞcles. To help prevent premature bearing assembly failures, Weir Minerals recommends that grease should be regularly supplied to the bearing assembly labyrinth seals using Warman® Accumin® automaঞc lubricators. This provides a protecঞve barrier against gland leakage and other sources of external contaminaঞon whilst also regreasing the bearings. "Our Warman® Accumin® automaঞc lubricators are a heavy-duty, single point lubricaঞon system designed specifically for Warman slurry pumps," says Michael Roinich, Weir Minerals Accumin® Product Specialist. "They deliver the required amount of grease in line with our specificaঞons and are fied as standard on any new pumps. This helps our customers prevent bearing failures, keeping their operaঞons running smoothly." ACCUMIN® RANGE The Accumin® range comprises of two lubricators with easy to adjust dispensing systems. The Accumin® 125 lubricator, ideal for smaller pumps, is waterproof, gas operated and ready to use straight out of the box. The 250 model embraces the latest technology and is recommended for larger pumps, featuring a reusable electro-mechanical drive unit embedded with so[ware which can determine fault codes. This model features an LCD display and LED indicators that immediately confirm the lubricaঞon system's operaঞonal status. Accumin® lubricators are suitable for most grease lubricated rotaঞng equipment including conveyors, fans, electric motors, valves, filter belts, vacuum pumps, mechanical seals and gearbox seals. Accumin® lubricators maintain a grease barrier within the labyrinth seal. This prevents external contaminaঞon ingress into the bearings from gland water or slurry. Using Accumin® lubricators decreases the risk of lubricaঞon related failures and extends the life of the pump. Accumin® lubricators deliver small amounts of grease at regular intervals for a seal purging effect. This allows any contaminated grease to be pushed out before it can further penetrate the bearing assembly. This is preferable to using a manual grease gun to insert a large amount of grease at once, which can result in over greasing and elevated bearing temperatures. The grease dispensing rate, in monthly increments, ranges from one to twelve months, allowing equipment to be lubricated as needed. When compared to mulঞ-point systems, single-point lubricators require less maintenance and are more economical while providing the same benefits. "Our Accumin lubricators are part of our holisঞc approach to supporঞng customers, with the product designed to reduce bearing assembly failure for lower total ownership costs. We are the only manufacturer to provide a heavy- duty lubricaঞon as standard on our pumps, helping our customers get the most out of their equipment," concludes Mr Roinich. Adopঞng a proacঞve approach to pump maintenance and lubricaঞon will help improve equipment reliability and its lifespan, whilst reducing maintenance costs and downঞme. Weir helps reduce pump bearing failures with lubricators Warman® Accumin® automac lubricators helping reduce pump bearing failures

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