Sf-1 thrust washer
Sf-1 thrust washer
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 – High Performance
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Composite thrust gasket Self-lubricating oil bearing oil-free bushing， SF-1 WC Thrust Washer
gasket, Thrust Washer supplier
Sf-1wc oil-free bearings are made of steel plate with sintered spherical bronze powder in the middle and rolled PTFE and mixture on the surface. It has the characteristics of low friction coefficient, wear resistance, good corrosion resistance and no oil lubrication. It can reduce the cost, reduce the size of the machine, avoid the phenomenon of shaft biting and reduce the noise and other advantages. Products have been widely used in various machinery sliding parts, such as: printing press, textile machine, tobacco machinery, automobile, motorcycle and agricultural and forestry machinery….
It is generally recommended that the tolerance of seat hole is H7 and the tolerance of shaft diameter is H8
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 |
|
Usage |
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Thermal Conductivity λ |
40 |
W/mK |
dry |
good |
|
|
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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