David from Canada
    Our company import the bronze gleitlager from viiplus china,viiplus professional team makes sure customs clearance is always smooth. They provide an accurate bronze bushing classification, handle all the paperwork,We have received the self-lubricating bronze bushings. They look well done and the high quality.
    Valerie from California
    We import the bronze gleitlager from China to under the incoterm FOB shanghai, sometimes by Air. viiplus is a very good bronze gleitlager supplier, they are very professional and patient, after we inform the new order, they will manufacturer bronze gleitlager in time and give us the schedule , and then we just need to receive the bronze parts
  • Daisy From Germany
    The best surface finishes for Sleeve Bearing, tighter concentricity, and bronze bushings material uniformity. The good supplier of standard inch and metric sleeve bearings and bushings from china.
Contact Person : Tiffany
Phone Number : +86 18258386757
WhatsApp : +8618258386757

DU-B Metal-Polymer Bronze Backed PTFE Plain Bearing

Place of Origin oilless bushing
Certification Bronze Back + Porous Bronze Sinter + PTFE + Lead
Minimum Order Quantity 1000 Piece/Pieces (Min. Order)
Price $0.20 - $10.00 / Pieces
Packaging Details Wooden pallets for standard export packing cartons
Delivery Time 10~15 work days
Payment Terms T/T PREPARD, T/T, L/C, D/A, D/P
Supply Ability plug graphite bearings, China, manufacturers, suppliers, factory, wholesale, Metal Journal Bearing, DU Self Lubricating Bearing, Composite Thrust Bearing, Composite Self Lubricating Bushings, Graphite Alloy Bearing, Flange Cast Iron Bearing
Product Details
Material Bronze Back + Porous Bronze Sinter + PTFE + Lead Plating Tin Or Copper
Characteristic Low-maintenance And Maintenance-free Plain Bearings Type Bushes, Collar Bushes, Washers, Strips Or Special Designs
Size Standard Size Available,inch Size Customization Application Textile Machinery Spare Parts
Feature Split Type Characteristics Flanged Housings
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Bronze Backed PTFE Plain Bearing


DU-B PTFE Plain Bearing

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Product Description

PB, PBF, PBF WITHOUT LEAD. lagerbuchse DU-B Metal-Polymer Bronze Backed PTFE Plain Bearing, Butt Joint

A wide variety of ina bushings options are available to you, bushes, maintenance-free, with bronze backing.


PTFE bushing bearing, self lubricating bushing Material Features It is a new type bushing without lead composition which is developed aiming at increasing demands on environmental protection.welcome to ask a quote.


Steel and Steel/Bronze Plain Bearings


Plain bearing and rod end designs that require maintenance with steel/steel and steel/bronze material pairs are easy to maintain, cost effective, and excellently suited to alternating loads. Plain bushes, washers, and strips employ the low-maintenance metal-polymer composite E50. The sliding layer features lubricant pockets, which means that an initial lubrication is sufficient in most cases.


We stand behind the quality of our Cylindrical Bushes in Metal-Polymer Composite Material Bronze Back + Porous Bronze Sinter +PTFE + Lead products .




DU bushing is of high safety factor,it is particularly suit for the working condition of high temperature and where no oil can be added or wherethe machine must work successively for long time.The bushing is widely used in steel metallurgy industry including sliding ways of successive casting machines,cement grouting pumps and spiraling conveyers for cement.It can also be pressed into a steel housing and work as an assembly;it can also be made as flange type which can move both in radial and axial directions.

Wear plate made from DU bushing material can be used in sliding part of bridge underprop.It can stand pressure of 130N/mm2 if we use a thicker wear layer and can be substitute of pure PTFE plate.




  • Very good wear and low friction performance over a wide range of loads, speeds and temperatures in dry running conditions

  • Suitable for lubricated applications

  • Suitable for linear, oscillating and rotating movements

  • Bronze back offers improved corrosion resistance in humid/saline environments

  • Approved to standard EN 1337-2 for structural bearings for civil engineering


Material Structure

dub bushing


DUB PTFE Coated Bronze Bushing DIN1494(ISO 3547) the size is like DU-B Bushing, PAP bushing MU-B series.


1. PTFE/Pb composition, anti-abrasion material, which will form a lubricating film during operation.

2. Bronze powder layer, which further strengthen the combination of the bronze plate and PTFE layer and transfer the heat more quickly.

3. Bronze plate, bear high load and transfer heat, anti-corrosion.


Technical Data


Max Load Static Load 250N/mm2 friction coefficient 0.03~0.20
  Low-speed Rotation 140N/mm2 max linear velocity dry friction 2m/s
  Rotation,Oscillation 60N/mm2   liquid lubrication >2m/s
Max PV
(Dry Friction)
intermittent operation 3.6N/mm2.m/s Thermal Conductivity 70W(m.K)-1
  long-time operation 1.8N/mm2.m/s Coefficient of thermal expansion 17x11-6K
Operation Temp. -195℃~+300℃    



Bearing forms available in standard dimensions

dub bushing


Bearing forms made to order: standard forms in special dimensions, thrust washers, flanged thrust washers, half-bearings, special shapes obtained by stamping or deep drawing, customized bearing designs



DU-B bushings offer very good wear and low friction performance over a wide range of loads, speeds and temperatures in dry running conditions
Bushing material suitable for lubricated applications
Anti-friction bearing suitable for linear, oscillating and rotating movements.


Low carton oilless bush  bearing low friction composite dry bush thin wall steel bushings



dub bushing


Typical Applications

typical application

This bearing bushing material meets the demanding criteria for long life and trouble-free performance with or without lubricant, of high safety factor even.

The bronze backing provides a high corrosion resistance, anti magnetic properties and a good thermal conductivity, The bearings are particularly appropriate for high temperature environment where no oil is efficient and the machine must be under successive long period working condition. The typical applications covered steel metallurgy industry such as bushes for roller grooves of successive casting machines, cement grouting pumps and screw conveyers for cement and so on.


Operating Performance



Dry Very Good
Oil lubricated Good
Grease lubricated Fair
Water lubricated Good
Process fluid lubricated Fair


For Superior / Lead-Free Performance


Dry DP4-B
Oil lubricated DP4-B
Grease lubricated DP4-B
Water lubricated DP4-B
Process fluid lubricated DP4-B




Shaft surface roughness, Ra





0.3 - 0.5

≤ 0.05 - 0.4 *

Shaft surface hardness Unhardened acceptable, improved bearing life > 200 HB
Material Backing Bearing Lining Operating Temperature
Maximum Load plim
[N/mm2 ]
Minimum Maximum
DU Steel PTFE+Lead -200 280 250
DUB Bronze PTFE+Lead -200 280 140



Physical, Mechanical and Electrical Properties


Characteristic Symbol Value Unit Comments
Physical Properties Thermal Conductivity λ 40 60 W/mK after running in
Coefficient of linear thermal expansion : measured on strip
1.9 mm thick.
parallel to surface α1 11 18 1/10^6 K  
normal to surface α2 30 36 1/10^6 K  
Maximum Operating Temperature Tmax 280 280 °C  
Minimum Operating Temperature Tmin -200 -200 °C  
Mechanical Properties Compressive Yield Strength σc 350 N/mm²   measured on disc 25 mm
diameter x 2.44 mm thick.
Maximum Load   250 N/mm²    
Static psta,max        
Dynamic pdyn,max 140 N/mm²    
Electrical Properties Surface Resistance ROB 1 – 10 1 – 12 depends on applied
pressure and contact area
Maximum Thermal Neutron dose DNth 2 x 10^15 2 x 10^15 nvt nvt = thermal
neutron flux
Maximum gamma ray dose 10^6 10^6 Gy = J/kg

1 Gray = 1 J/kg



The standard range of DU-B bushing is very comprehensive and covers almost every standard size. This range comprises straight and flanged bushings and strips.

DU-B Composite bearing standard sizes list for your reference

We are a professional supply on various kind of bearings in China


self-lubricating bearing