Precision Flat Bearings 
for Rolling Mills 

Rolling Mills around the world have to compete against each other to improve their profitability and product quality—the goal should be to eliminate the wear and tear of the machinery.

The Problem: If the milling stand and chocks are equipped with conventional wear plates made out of C45, tool steel or bronze, the effects of abrasion, impacts and corrosion significantly damages the wear parts and decrease the liner thickness. This increased gap between housing and chock liner then allows for high levels of axial-forces, which in turn damages chocks, rolls, roller bearings, the clamping system and negatively impacts final rolled product quality.

The damage to those key parts causes mill down time for replacement and progressively worse product quality. Too much play for the roll assembly in horizontal and vertical direction causes cross rolling, hence cobbles and loss of strip are the result.

The CORTS solution: Precision flat bearings made out of CORC-g Compound Steel. Wear is minimized thanks to the very hard, abrasion and corrosion resistant bearing surface. The base material is not hardened and softer then the cast iron of mill housing and chocks. The principal hard against hard only makes sense when the mounting surfaces of liners are protected by the softer backing to absorb shocks and allow some elasticity. The hardness of the bearing surface eliminates wear and corrosion exceptionally longer then all substitutes. This is a key performance booster for all rolling mills.

The problem: A high level of wear causes the bearing gap to become greatly enlarged to a disproportionate extent, which means it is no longer possible to guarantee a precise regulation of the rolling mill. Precision flat bearing systems made out of CORC-g compound steel solve this problem. (»)