Stamped metal cages
Sheet steel cages
The majority of stamped sheet steel cages are made of continuously hot-rolled low carbon steel in accordance with EN 10111:2008. These lightweight cages have relatively high strength and can be surface treated to further reduce friction and wear.
Stamped cages normally used in stainless steel bearings are made of X5CrNi18-10 stainless steel, in accordance with EN 10088‑1:2005.
Sheet brass cages
Stamped sheet brass cages are used for some small and medium-size bearings. The brass used for these cages is in accordance with EN 1652:1998. In applications like refrigeration compressors that use ammonia, season cracking in sheet brass might occur, therefore machined brass or steel cages should be used instead.