Extruding Press
 Problem: The
press columns failed twice since 1978 and had to be totally replaced.
the insurance company did not want to insure the press anymore unless
the machine was correctly pretensioned.
Solution: The
press was modified. The existing columns were checked and can be
reused. On both sides the columns are stretched by Superbolt patented
Multi-Jackbolt Tensioners. The higher preload can now safely take
up the heavy loads of the machine. Since the press has been modified,
there has not been one failure.
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