For 10 new belt conveyors at Tanjung Enim, Bukit Asam will deploy 14 TVVS fluid couplings of 55-315kW.
In the past, the mine operator has always been pleased with the reliability of its already installed Voith fluid couplings. They ensure smooth start-ups day after day and a long service life for all components — especially the belts, manager of maintenance planning at Bukit Asam Kris Tjahajaning Tyas said.
“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,” he said.
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, senior manager of maintenance at Bukit Asam Tatra Muis said.
“Proven reliability is why we absolutely wanted to have Voith fluid couplings in the new conveyor drives as well.”
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.
The 13 existing belt conveyors in the Tanjung Enim Coal Mine still rely on TVVS fluid couplings (rated 55-500kW) that were installed more than 17 years ago.
The mine has two coal handling facilities, with the longest belt conveyor having a length of 4284m and a capacity of 1700 tons per hour.
The drive of this conveyor is equipped with three 315kW motors and three fluid couplings, type 750 TVVS.
In addition to the conveyor drives, the bucket wheel excavator drives in the Tanjung Enim Coal Mine are equipped with five 750kW fluid couplings, Type T, that dampen vibrations and protect the driveline from damage also in case of frequently occurring overload.
