Bushing Strip
Bushing Strip
Discover our plain bearings: Flange bearings, sleeve bushings, and thrust washers. Customizable bushing materials available. Our products are wear-resistant, maintenance-free, and designed to withstand dirt, dust, and corrosion.
Self Lubricating Bearings Bushing Strips – High Performance, Coating PTFE, Design Strip material Engineering material Steel backed, according to ISO 3547 Type
Material Information Sheets
Maintenance-Free Plain Bearing BushingsTemperature range from/to(°C) -200 to +260
sliding bearings combine in an optimal manner the mechanical properties of the sintered bronze with the sliding and lubrication properties of a PTFE mixture. The structure of this composite material results in good dimensional stability and good thermal conductivity.
sliding bearings have a steel base, to which a 0.2 to 0.4 mm porous tin bronze layer is sintered. The pores of this layer are filled during a rolling process with polytetrafluoroethylene (PTFE) and other friction and wear reducing additives. A 5 to 30 μm top layer made of the same material forms the running-in layer.
| Manufacturer color | Silver/gray black |
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SF-1SP Strip Specification & Tolerance.
SF – 1 sheet strip
This product is a plain bearing made of a mixture of PTFE and filler rolled on the surface of sintered spherical bronze powder with a steel plate as substrate.
With low friction coefficient, wear resistance, corrosion resistance, oil-free lubrication, and other characteristics. Using this product can reduce the cost, reduce the volume of the machine, avoid the phenomenon of shaft blocking, reduce the noise of the machine.
Strip Size
Features
Suitable for dry running with a low coefficient of friction, low wear rate, good sliding characteristics, the transfer film created will protect the mating metal surface. Suitable for rotary and oscillating movement, high chemical resistance, lower absorption of water and reduced swelling. Also performs well with lubrication.
Structures
1. PTFE/Fibre mixture thickness 0.01~0.03mm, provides an excellent initial transfer film, which effectively coats the mating surfaces of the bearing assembly, forming an oxide type solid lubricant film.
2. Sintered bronze powder thickness 0.20-0.35mm, provides Max. thermal conductivity away from the bearing surface, also serves as a reservoir for the PTFE-Fibre mixture.
3. Low-carbon steel, gives exceptionally high load carrying capacity, excellent heat dissipation.
4. Copper/Tin plating thickness 0.002mm, provides good corrosion resistance.
Technical Data
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Physical and Mechanical Properties |
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Usage |
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Thermal Conductivity λ |
40 |
W/mK |
dry |
good |
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Maximum Operating Temperature Tmax |
280 |
°C |
oil lubricated |
good |
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Minimum Operating Temperature Tmin |
-200 |
°C |
grease lubricated |
fair |
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Compressive Yield Strength σc |
350 |
N/mm2 |
water lubricated |
fair |
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Maximum Static Load Psta,max |
250 |
N/mm2 |
process fluid lubricated |
fair |
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Maximum Dynamic Load Pdyn,max |
140 |
N/mm2 |
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Maximum Sliding Speed V-dry |
2.5 |
m/s |
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Maximum PV Factor-dry, continuous operation |
1.8 |
N/mm2 * m/s |
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Maximum PV Factor-dry, intermittent operation |
3.5 |
N/mm2 * m/s |
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Coefficient of friction f-dry |
0.02-0.25 |
– |
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Coefficient of friction f-oil lubricated |
0.02-0.12 |
– |
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Typical Applications
This material meets the demanding criteria for long life and trouble-free performance with or without lubrication.
Automotive: tractors, combines, crop sprayers, earthmovers, graders and other construction, auto machines, specific uses in power steering cylinders, steering gear thrust washers, disc brakes, calipers and pistons, shock absorbers, governor linkage, windshield wiper motor, tilt gear assemblies…
Business machines: photocopy machines, typewriters, mail sorters, postage meter systems, computer terminal printers and peripheral equipment, automatic printing devices, mail processing machinery…
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…And materials handling, marine engine, packaging, textile equipment, tools…etc.
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