Finest precision for heavy loads
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I made | in Germany SCREWS THAT ARE MANUFACTURED BY WHiRLING (MANUFACTURiNG PROCESS) PROVE TO BE THE RIGHT CHOICE FOR LIFTING JACKS uSED In THE RAILwAY Maintenance SECTOR. THE EXPANSION OF a high speed rail network is progressing in Europe. The french railway company sNCF is about to develop its TGV (high speed trains) trains in a new generation, just as the German Deutsche Bahn is doing. Even a private competition is rising in the ring of italy against the “Frecce Rosse“ and from year 2014 there will be a high speed link from Cologne to London. Also Russia plans to develop a network of high speed train services for the 2018 FIFA World Cup such as 300 to 400 km/h high speed trains from Moscow to St Petersburg, to Nizhny Novgorod and to Kazan, with a possible extension to Yekaterinburg. All these trains are serviced at frequent intervals and for this reason; they have to be lifted completely. The threaded spindles or screws used in the lifting jacks for the maintenance facturing process for the screws, as proven by the success of Bornemann Gewindetechnik GmbH. Since the past few decades, the experts at Bornemann (www.bornemann.de) in Lower Saxony, Delligsen developed an expertise in the manufacturing of threaded spindles for lifting jacks for railway equipment. In this market segment, the company supplies several reputed manufacturers of lifting jacks for trains in Europe as well as overseas. The high quality of the screws that could be achieved through the whirling manufacturing process has been crucial to the market success of Bornemann.

THE WHiRLING METHOD - SUPERIOR QUALITY THROUGH AN INTERRUPTED CUTTING PROCESS THIS THREAD WHIRLING process causes a rippled surface on the spindle body barely visible to the nacked eye through an interrupted cutting process. The applied lubricant remains in the fine depressions found on the metal surface. Due to this, the dreaded stick-slip effect is prevented even with heavy loads: When heavy loads are applied the surface of the threaded nuts is eventually grinding-in and the contact surface to the spindle gets too smooth. In doing so, ultimately the lubricant is pressed out from the gap...