SF-1 Self-lubricating Bearing Bushing

Image:

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Metallography:

1.PTFE+Filler;

2.Porous bronze sinter;

3.Steel backing;

4.Copper-plating/tin-plating.

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Structure Characteristics:

    Metal-polymer self-lubricating composite materials consist of metal backing sintered porous bronze with PTFE polymer as working layer. The metal backing provides mechanical strength, while the bronze sintered layer provides a strong mechanical  bonding between the backing and the bearing lining, the PTFE polymer offers exceptional low friction even under dry condition and the thermoplastic polymer is generally designed to operate with marginal lubrication. The construction promotes  dimensional stability and improves the thermal conductivity. This material meets the demanding criteria for long life and trouble-free performance with or without lubrication.

Application:

      Automotive: tractors, crop sprayers, earthmovers, auto machines,  specific uses in power steering cylinders, steering gear thrust washers, disc brakes, shock absorbers, windshield wiper motor……

      Hydraulics and valves: pumps including gear, rotary, water, axial piston, and other types, ball, butterfly, poppet steam, and other  valves and valve trunnions……

      Home appliances: tape recorders, refrigerators, air conditioners,  cleaners, polishers, sewing machines, ovens, dishwashers, clothes  washing machines……

    

DataGradeSF-1SF-1BSF-1SSF-1TSF-1PSF-1D
MaterialSteel+   Bronze+ PTFE+Pb+FillerBronze+   PTFE+Pb+FillerStainless   steel+ Bronze+ PTFE+Pb+ FillerSteel+   Bronze+ PTFE+Pb+ FillerSteel+   Bronze+ PTFE+Pb+ FillerSteel+   Bronze+ PTFE+Pb+ Filler
We can also develop according to customers special request while   out of this tableblob.pngblob.pngblob.pngblob.pngblob.pngblob.png
Typical   application
printing,

woven, 

tobacco,

gymnastic
machinery

metallurgical industry,

continuous 

casting,

rolling mill, concrete

machinery,

spiral

conveyers

corrosion

resistant part in

dyeing 

machinery

and ocean industry

medium,   high

pressure

gear pump,
ram pump, vane
pumps

shock  

absorber 

of

automobiles,

motorcycles and

pneumatic cylinder

Printing   machinery

,woven, 

tobacco,

gymnastic
machinery, shock absorber
Dry friction Load capacity P (N/mm²)Static   load                           250250250250250250
Dynamic load140140140140140140
Oscoill-ation Load606060606060
Max line speed V (m/s)Dry   friction2.52.52.52.522.5
Oil lubrica-tion>5>5>5>5>5>5
PV value limit      (N/mm²·m/s)Dry   friction1.81.81.81.01.81.8
Oil lubrica-tion3.63.63.6103.63.6
Friction coef uDry   friction0.08~0.200.08~0.200.08~0.200.08~0.250.08~0.200.08~0.20
Oil lubrica-tion0.02~0.120.02~0.120.02~0.120.02~0.080.02~0.080.02~0.08
Mating shaftHardness>220>220>220>220>220>220
Roughness0.4~1.250.4~1.250.4~1.250.4~1.250.4~1.250.4~1.25
Working temperature (℃)(-200,   +280)(-200,   +280)(-200,   +280)(-200,   +280)(-200,   +280)(-200,   +280)
Thermal conductivity (W/mk)406040404040
Coefficient   of linear expansion11×10-6/K18×10-6/K11×10-6/K11×10-6/K11×10-6/K11×10-6/K
Outside   surface PlatingCopper/
    Tin
NoNoCopper/TinCopper/TinCopper/Tin