Material
Steel ( DIN-St12|ASTM-A366/A366M-97|JIS-SPCC ) +
Bronze ( CuSn8Zn3 ) +
POM
Introduction
Marginally lubricated bearings(orange POM), made of low carbon steel as base material, are produced by the process of being sintered bronze powder as medium layer and coated orange POM as layer. They are in conformity with the European RoHS environmental protection standards and widely used in the applications of truck, hydraulic transmission and engineering machinery due to the advantages of good wear resistance and good load capacity.
Usage
dry |
poor |
oil lubricated |
good |
grease lubricated |
very good |
water lubricated |
poor |
process fluid lubricated |
poor |
Physical and Mechanical Properties
thermal conductivity λ |
52 W/mK |
max. operating temperature Tmax |
+130 ℃ |
min. operating temperature Tmin |
-40 ℃ |
compressive yield strength δc |
380 N/mm |
max. static load Psta,max |
140 N/mm |
max. dynamic load Pdyn,max |
70 N/mm |
max. sliding speed v-greased |
2.5 m/s |
max. PV factor- greased |
2.8 N/mm2·m/s |
coefficient of friction f-greased |
0.06-0.12 |
shaft surface finish Ra |
≤0.4 µm |
shaft hardness-normal |
>200HB |
shaft hardness-for service life>2000 hours |
>350HB |