Zero Crown Housing

The Sendzimir Zero Crown housing is now over 30 years old in concept and design. Nevertheless, this idea of strong side frames and a tapered top and bottom has withstood the testing of newer technical analyses available - such as finite element analysis which has further reinforced the validity of this housing structure.

The Zero Crown housing does not eliminate housing stretch under load. Rather, the design concept is to allow the housing to stretch uniformly under load. Side frame deflection and transverse slab deflection are combined in a unique way to maintain uniform force along the full length of the work rolls, thus assuring "zero-crown" contour across the entire strip width.

There have been over 80 Zero Crown Housings now built world-wide since 1975. All Sendzimir Licensees use this basic design.

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