Material
Steel ( DIN-St12|ASTM-A366/A366M-97|JIS-SPCC ) +
Bronze ( DIN-CuPb10Sn10|SAE-797|JIS-LBC3 ) +
Graphite
Bronze Hardness 70HB-100HB
Introduction
Bimetallic bearings(CuPb10Sn10/graphite), made of low carbon steel as base material, are produced by the process of being sintered tin bronze CuPb10Sn10 powder as layer and rolled diamond oil pockets on the surface of alloy layer for storing graphite. They are widely used in the applications of automotive, truck, hydraulic transmission and engineering machinery due to the advantages of low friction coefficient, good self-lubricating and good load capacity.
Usage
dry |
good |
oil lubricated |
good |
grease lubricated |
very good |
water lubricated |
good |
process fluid lubricated |
good |
Physical and Mechanical Properties
max. operating temperature Tmax-greased |
+150 ℃ |
max. operating temperature Tmax-oil lubricated |
+250 ℃ |
min. operating temperature Tmin |
-40 ℃ |
max. static load Psta,max |
300 N/mm |
max. dynamic load Pdyn,max |
140 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 |
0.05-0.12 |
coefficient of friction f-oil lubricated |
0.04-0.12 |
shaft surface finish Ra |
≤0.8 µm |
shaft hardness-normal |
>200HB |
shaft hardness-for service life>2000 hours |
>350HB |
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