Material
Steel ( DIN-St12|ASTM-A366/A366M-97|JIS-SPCC ) +
Bronze ( CuSn alloy ) +
Graphite film
Introduction
Dry bearings(steel/graphite film), made of low carbon steel as base material, are produced by the process of being sintered bronze powder as medium layer and coated graphite film as lubrication layer. They are in conformity with the European RoHS environmental protection standards and widely used in the applications of automotive, bicycle and hydraulic transmission due to the advantages of lead free, low friction coefficient, good self-lubricating, good wear resistance and good load capacity.
Usage
dry |
good |
oil lubricated |
very good |
grease lubricated |
good |
water lubricated |
fair |
process fluid lubricated |
good |
Physical and Mechanical Properties
thermal conductivity |
40 W/mK |
max. operating temperature Tmax |
+280 ℃ |
min. operating temperature Tmin |
-200 ℃ |
compressive yield strength δc |
350 N/mm |
max. static load Psta,max |
250 N/mm |
max. dynamic load Pdyn,max |
140 N/mm |
max. sliding speed v-dry |
2.5 m/s |
max. PV factor-dry, continuous |
1.8 N/mm*m/s |
max. PV factor-dry, intermittent |
3.5 N/mm*m/s |
coefficient of friction f-dry |
0.02-0.25 |
coefficient of friction f-oil lubricated |
0.02-0.12 |
shaft surface finish Ra-dry |
0.3-0.5 µm |
shaft hardness |
hardened/unhardened |
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