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Designs and areas of application

Until the 1970s, telescopic covers seldommoved in speed ranges any greater than 15 m/min.The expansion and compression of the indivi-dual boxes took place sequentially. Due tothe low speed, there was hardly any impactnoise. Over the years, however, Improvements indrive technology have increased the travel speeds of the machines and thus also the speeds of the cover. At high travel speeds, the impact pulse exer-ted on the cover becomes truly enormous.This results in loud impact noises. What ismore, the telescopic cover is subjected tovery large mechanical stresses.The landscape for telescopic covers has chan-ged greatly in the last few years. “Old” designs are less and less in demand, with modern concepts such as covers withdifferential drives taking their place.

â–  Telescopic cover with flat shape on a boring machine

Telescopic covers are generally producedfrom cold-rolled uncoated thin plates inthicknesses from 1 to 3 mm.In case of extremely aggressive environmentalconditions (e.g. aggressive cooling lubri-cants), corrosion-resistant stainless steelplates may also be used.

The new generation of KABELSCHLEPP tele-scopic covers also allows the use of semi- finished products with surface finishings such as: â–  Plates with pure zinc coatings â–  Plates with zinc/nickel coatings â–  Plates with lead/zinc coatingsThis ensures substantial protection against cor-rosion.
Subject to change. 25