An industrial environment background noise reduction technique used in the measurements of the tapered roller bearings

Abstract. This paper investigates the feasibility of noise measurements for automotive tapered roller bearings in an industrial production facility. The European Union regulations regarding the NVH have indirectly led to improvements in the field of the bearings industry, affecting both industrial and automotive markets. To achieve the improvements of the bearings in terms of NVH, a new relevant study methodology must be explored. The goal of this study is to examine the technical possibilities of reducing industrial background noise by defining a relevant noise measurement in the production environment for tapered roller bearings. Each roller bearing production site has different sources of noise coming from various machines. Successfully measuring noise in automotive tapered roller bearings in production requires an enclosure where the production assemblies are not influenced by the background noise of the plant. The enclosure must be covered with isolation materials. Foams and sponges must be selected to achieve the desired noise attenuation in the target range of frequencies.