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DP4 thrust washer, fibres and PTFE lined, steel backing, maintenance-free
Sintered PTFE and Bronze on Steel Backing, surface with copper-plating or tin-plating
PTFE / Fibre + Bronze + Steel + Copper plating / tin-plating
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.
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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.
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Technical Data
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Physical and Mechanical Properties
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Usage
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Maximum Operating Temperature Tmax
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280
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°C
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dry
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good
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Minimum Operating Temperature Tmin
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-200
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°C
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oil lubricated
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very good
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Maximum Static Load Psta,max
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250
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N/mm2
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grease lubricated
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good
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Maximum Dynamic Load Pdyn,max
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140
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N/mm2
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water lubricated
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fair
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Maximum Sliding Speed V-dry
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2.5
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m/s
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process fluid lubricated
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good
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Maximum Sliding Speed V-oil lubricated
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5
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m/s
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Maximum PV Factor-dry
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1
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N/mm2 * m/s
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Maximum PV Factor-oil lubricated
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10
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N/mm2 * m/s
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Coefficient of friction f-dry
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0.04-0.25
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-
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Coefficient of friction f-oil lubricated
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0.02-0.08
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-
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Standard DP4 thrust washers --- Metric Size
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.
Other Standard DP4 Shapes
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