PN 001-10 2010-10-22

What a breakthrough!

Since 2003, tunnel boring machines have been drilling the world's longest railway tunnel more than 2000 meters below the ski slopes of the Gotthard Massif mountain range in the Alps. The breakthrough finally came on October 15, 2010 when the machines bridged the gap between the two sides of the tunnel. During the process Sissi, Heidi, Gabi 1 and Gabi 2, as the machines have been named, continuously used twice as much power as the space shuttle's main drive during lift off. "Rexroth drives, designed to withstand 15,000 operating hours, reliably transformed this power into the uniform motion of the tunnel boring machines, which were 9 meters in diameter", describes Dr. Karl Tragl, Chairman of the Executive Board, Bosch Rexroth AG, the Rexroth-part to this project. From 2017, the rail link through this railway tunnel will reduce journey times between Basel and Milan, while also relieving the amount of freight traffic in the Alpine region.


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