Aluminum Alloy Bearing

The surrounding bearing rings are not directly exposed to rolling friction, they do not have to be made from steel but can consist of non-ferrous metals, cast iron or synthetic materials. In particular, UWE aluminium alloy wire-race bearings with light alloy bearing rings have gained special importance.The same load carrying capacity as that of comparable steel bearings is achieved by using an aluminium alloy of high mechanical strength as ring material.Compared to steel bearings of identical cross sections,aluminium wire-race bearings weigh approx. 60 % less.High mechanical strength of this wrought aluminium alloy means that the gearing can also be cut directly into one or more bearing rings.A light alloy wire-race bearing can be made corrosion-proof and maintenance-free by using appropriate materials for the rolling elements and races. The corrosion behaviour of aluminium bearing rings can be significantly improved by a surface treatment.Weight comparison between light alloy and steel bearings equal in size with the same load-carrying capacity and an external diameter of 2200 mm.