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In the past, Krones AG relied on conventional metallic ball bearings, but these did not run smoothly enough and were too heavy. In addition, the rollers stopped sometimes and the label tape could not be attached correctly on the bottle. Downtimes increased, resulting in additional costs. The problem was in finding lightweight and maintenance-free ball bearing solutions that could ensure smooth running in the guide rollers.
Due to the decisive advantage of the smooth running, the xiros guide rollers from igus were approved. Depending on the size of the film storage device of the Sleevematic labelling machine, between 12 and 36 guide rollers are used. Two xiros fixed flange ball bearings are used per guide roller. Due to the low mass, the freedom from maintenance and the best coefficients of friction and wear of the plastic solution, the problems with metallic ball bearings have become a thing of the past.
