The combined roller bearing is an inherently simple product, and yet it is a fundamental mechanical solution that solves a number of problems in demanding applications. When a little imagination is applied to combined roller bearings and their mating profiles, then high performance linear guidance systems can be quickly developed to meet the needs of many diverse industries and environments. So just what is a combined roller bearing? It comprises a cylindrical roller bearing - a 'maximum capacity' type (ie full of steel rollers and without a cage to separate them) - as part of a non-separable design which rotates on a weldable steel hub, known as the radial roller. Inside the hub and set at 90º to the radial roller is another bearing - a needle roller, again of 'max capacity' type. This is the axial roller. Both bearings are sealed with a hybrid rubber/metal seals. These products can solve many heavy duty linear guidance problems in a diverse range of industries and environments, carrying loads from tens of kilos up to hundreds of tonnes.