Page 11 - Dana Glacier Bearings Materials Brochure, designed and produced by Connell Marketing Associates, UK

mponent ProPdoulycmtioenr Based Materials

Glacier Vandervell has developed a range of metal-polymer based bearing materials
designed to maximise the tribological advantages of polymer materials and to give
superior performance under dry or marginally lubricated conditions.

Metal-polymer materials do not rely on the formation of a hydrodynamic film to operate
successfully and are therefore particularly suitable for oscillating, frequent stop/start or
low speed/high load conditions.

Polymer Bearing Structure

DU DP4 DX DS Hi-ex DM EP

PTFE PTFE, CaF2 + Acetal Acetal co- PEEK + PTFE PTFE, Pb Solid lubricant
Lead Aramid fibres Al mesh & fillers
co-polymer polymer + filler & Fillers

OVERLAY

INTERLAYER
BACKING

Unlike some polymer based bearing materials, Glacier Vandervell metal-polymer materials
do not absorb water or swell in the presence of moisture, so there is little danger of
seizure due to a reduction of clearance when operating in a humid atmosphere.

Metal-polymer bearings are designed to be press fitted into a housing, the thin wall of the
bearing permitting compact assemblies without the bulk required by rolling element
bearings.

DU, DX and the derivative materials The metal backing provides an The DM mesh product has been
DU-B, DP, DP4, Hi-eX and DS each underlying strength, while the developed to meet the needs of
consist of a composite material in bronze interlayer provides a strong applications such as hinges where
which a porous bronze layer is mechanical bond for the polymer a bearing capable of assembly
bonded to a metal backing and lining, and promotes dimensional and operation with zero clearance
impregnated and lined with a stability. It also improves thermal is required.
polymer surface. It is the choice of conductivity, thereby reducing
this polymer which imparts to each temperatures at the bearing
material its particular bearing surface.
properties.
The solid polymer bearing material
EP is homogenous and derives its
bearing, physical and mechanical
properties from the base polymer
and the filler formulation.

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