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MDA Technologies 3/2014

MDA Technologies 3/2014

Machine Elements Fluid

Machine Elements Fluid couplings – no unplanned downtime since 1997 No unplanned downtime since 1997 – Tanjung Enim Coal Mine relies on TVVS constant-fill fluid couplings from Voith The Indonesian mining company Bukit Asam has always been pleased with the reliability of its installed Voith fluid couplings at Tanjung Enim Coal Mine in Sumatra. The fluid couplings ensure smooth start-ups day after day and a long service life for all components – especially the belts. “We’re all very impressed with the performance of the TVVS constant-fill fluid couplings. They’re very easy to maintain – only oil changes are needed – and the reliability is just great,” says Kris Tjahajaning Tyas, Manager of Maintenance Planning at Bukit Asam. The mine operates 24/7, and any equipment downtime means loss of production. In older sections of the mine they’ve been using TVVS on belt conveyors since 1997, without any unplanned downtime. Success for Tanjung Enim Coal Mine The Voith fluid couplings are well suited for use in extreme environments and are completely insensitive to harsh conditions like dust, dirt and humidity. The fine coal dust in Tanjung Enim Coal Mine has no effect on performance. The couplings dampen torsional vibrations in the driveline and protect it against overload, extending the lifetime of the entire system. Because torque is transmitted by a fluid, the power transmission of the fluid couplings is wear-free, reducing maintenance to a minimum. Bukit Asam’s Tyas is happy with the many benefits that the fluid couplings provide. He also appreciates the useful advice and aftersales support from the local Voith team, along with unmatched know-how on the entire drive system. The 13 belt conveyors in the Coal Mine still rely on TVVS fluid couplings (rated from 55 to 500 kW) that were installed more than 17 years ago. The mine has two coal handling facilities, with the longest belt conveyor having a length of 4,284 meters and a capacity of 1,700 tons per hour. The drive of this conveyor is equipped with three 315 kW motors and three fluid couplings, type 750 TVVS. In addition to the conveyor drives, the bucket wheel excavator drives in the Mine are equipped with five 750 kW fluid couplings, Type T, that dampen vibrations and protect the driveline from damage also in case of frequently occurring overload. Tanjung Enim Coal Mine, located in Sumatra, is one of the largest coal reserves of Asia and the world. The mine has been in operation for more than 90 years. In 2012, it produced nearly 15.5 million tons of coal, and the production forecast is higher in the coming years. www.voith.com About Company name: Voith GmbH Founded: 1867 Headquarters: Heidenheim, Germany Turnover: €5.7 bn Employees: more than 43,000 Products: intelligent drive solutions and systems 30 MDA Technologies 3/2014

NORD DRIVESYSTEMS | Intelligent Drivesystems, Worldwide Services Intralogistics specialist Frequency Inverter n Scalable functionality n Full fieldbus connectivity n Wide power range Gear Unit n High efficiency 2-stage bevel design n High power density n Long service life Motor n Designed to global standards n High overload capacity n Wide voltage range intralogistics.nord.com Getriebebau NORD GmbH & Co. KG Tel: +49 (0) 45 32 /289-0 info@nord.com Member of the NORD DRIVESYSTEMS Group

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