Abstract: The invention relates to a radial roller bearing, having an outer bearing ring and an inner bearing ring, and rolling bodies located between the rings. Some of the rollers are formed by individual hollow rollers of a shape memory alloy. The cross-section of the shape memory alloy rollers is deformed during the assembly of the radial roller bearing to fit the dimensions of the free space between the rims of the rings. The rollers are introduced into the radial roller bearing through the free space between the rims of the bearing rings. After introduction into the radial roller bearing and once they have reached a specific temperature, the rollers independently regain their original shape.

Abstract: The invention relates to a measuring device for measuring changes in the position of the edge of a body of a component. Said measuring device contains a sensor which reacts to the changes, a light source, a measuring edge fixed in relation to the edge of the body, and a light emitted from the light source. From the change in position, information about the deformation caused by a force F (for example, in the case of bearings) can be obtained, a weight or an imbalance can be determined, and joints and press fits can be monitored. The measurement is carried out by reflection or transmission, preferably using optical waveguides.