Group Products Bearings, ... Plain... C omposite dry ... General General F W bushing materials
fig 1
FW bushing materials
FW bushings (fig 1) are produced by a winding technique from a self-lubricating composite. The sliding layer consists of strands of high-strength polyester and reinforced PTFE (polytetrafluoroethylene) in an epoxy resin matrix. The shell or backing is made of wound high-strength tensioned glass fibre also in an epoxy resin matrix. The sliding and backing layers are firmly anchored to each other.
Both layers are produced by winding endless strands in a criss-cross pattern.
Modern filament winding technology has made it possible to combine the special mechanical properties of glass fibre with the excellent tribological properties of high-strength thermoplastic and PTFE fibres embedded in epoxy resin to
produce a new, innovative bearing material. The defined position of the strands in the criss-cross pattern and the intensive binding between the strands and the resin provide very high load carrying capacity and wear resistance.
The basic technical data are given in the table.