What are the assembly methods for cylindrical roller bearings?
But in the actual assembly process, found the problem of cage buckle into the base, (1): not a roller completely fall into the pocket, need to re adjust the display position to complete part of the roller; (2) for the long cylindrical roller is placed to dump, to repeatedly placed, in addition to the high precision (II above) roller, easy to damage. Therefore, the placement of the roller can not be placed in the correct position at once. The placement of the roller can be determined by human visual inspection, so that the assembly efficiency is low, and it is only suitable for small batch products. But for mass production or constant line products, the assembly efficiency is greatly restricted, and even the production schedule is affected.
Among them, the roller and cage and ferrule matching, that is, the installation of roller process, is the assembly process is one of the most important, and its labor volume accounts for about 30% of the total assembly labor, so assembly efficiency is particularly important.Usually installed roller method: a cage placed in the outer ring (or inner ring) end face, first with three roller spacing 120 degrees will ring pad, the remaining roller according to the cage pocket hole corresponding position one by one. Then buckle directly with the base of the other cage until the roller completely falls into the correct position of the pocket, then turn back the bearing and buckle into the support post with the holder end cover.
Cylindrical roller bearings are usually separable from one of the ferrule components and become separable bearings,The typical common structure form is mainly divided into three types: N, NJ, NU, the assembly process: cleaning, sorting ring raceway size deviation, roller holder and the supporting ring - cage riveting assembly to form a ferrule assembly with another ring with clearance, sleeve, finished the inspection: demagnetization cleaning and oiling - packaging.
