Material
Bronze ( DIN-CuSn7Zn4Pb7 ) +
Graphite
Introduction
Solid lubricating bearings(CuSn7Zn4Pb7), made of tin bronze CuSn7Zn4Pb7 as base material, are produced by the process of being distributed special solid lubrication with certain angle and density. They are widely used in the applications of mold, metallurgy and engineering machinery due to the advantages of low friction coefficient, good self-lubricating,high working temperature and long life.
Chemical Composition%
|
Material
|
Cu
|
Ni
|
P
|
Pb
|
Sn
|
Zn
|
Al
|
Fe
|
S
|
Sb
|
Si
|
|
CuSn7Zn4Pb7
|
81-85
|
≤2
|
≤0.1
|
5-8
|
6-8
|
2-5
|
≤
0.01
|
≤
0.2
|
≤
0.1
|
≤
0.3
|
≤
0.01
|
Physical and Mechanical Properties
|
max. operating temperature Tmax
|
+300 ℃
|
|
min. operating temperature Tmin
|
-40 ℃
|
|
max. load p max
|
40 N/mm2
|
|
tensile strength
|
230 N/mm2
|
|
elongation
|
12-15 %
|
|
hardness
|
60-70 HB
|
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