Home > PE PTFE Composite Bearing
is wrapped by steel backing, Sintering bronze inter layer and PTFE(Teflon) composite anti-wear inner surface. Also it is name SF-1 bushing in China and DU, DP4, PAP P10 overseas. It is wildly used in hydraulic gear pumps, oil cylinder, oil Damping bushes and piston rings for automobiles and motorcycles and textile, food-stuff machines, etc.
PTFE oilless dry bearing bushing is in carbon steel backing with sintered bronze intermediate layer, then PTFE (teflon) composite inner coated.PE model code means carbon steel in cylinder type bushing
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1.PTFE composite 0.01~0.03mm as sliding layer* 2.Porous bronze 0.2~0.3mm 3.Stainless Steel backing 0.7~2.3mm** 4. (without further plating) *Normally it is without lead, customized can add it. ** Metal can be in carbon steel, bronze or stainless steel.
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Performance |
Data (*According to steel backing) |
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Load capacity P (Dry friction) |
Static load |
250N/mm2 |
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Dynamic load |
140N/mm2 |
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Max linear speed V |
Dry friction |
2.5m/s |
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Oil lubrication |
5m/s |
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PV value limit |
Dry friction |
3.6N/mm2.m/s |
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Oil lubrication |
50N/mm2.m/s |
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Friction coef u |
Dry friction |
0.08~0.20 |
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Oil lubrication |
0.02~0.07 |
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Working temperature |
-200oC~+280oC |
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Thermal conductivity |
40W/mk |
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Linear expansion |
12*10 -6/K |
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Products Standard: ISO3547 (Replaces DIN1494)
Click here to download:
Catalogue of PE PTFE composite bearing
DP4 Specifications(sizes) List
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