Patent ID: 7282908

Claim:
Surveying device for the running parameters of a railway bearing, wherein said railway bearing is a tapered roller bearing including a rotating inner race having a rotational axis and a non-rotating outer race, the device comprising: a sealing shield mounted on the non-rotating outer race; a sealing covering integral with the shield and in contact with a sliding surface, wherein the sliding surface is integral with the rotating inner race; an annular element-shrink-fit onto the rotating inner race and comprising an emission wall defining a signal generating element generating a signal, wherein the signal generating element is integral with the sliding surface wherein the end of the emission wall is oriented towards the shield and is arranged outside the shield and provided with alternating areas with mutually opposed signals; a sensor on the outer race facing the signal generating element and reading the signal, wherein the sensor is integral with the shield and is positioned radially outward from and radially aligned with the signal generating element and outside the railway bearing wherein the railway bearings are tapered roller bearings.