SF-2 is a kind of thin wall wrapped bearings made of triple layer composite material which consists of a low-carbon steel backing strip, a sintered porous tin bronze particles interlayer and rolling process with POM as surface layer. The covering layer has pockets to retain lubricating grease.

Suitable for slow rotational and oscillating movements and also linear movements under radial load and maintenance-free operation but also where there is a risk of errors of alignment, edge loading or moderate contamination. Initial lubrication required.