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DUB thrust washer, PTFE lined, BRONZE backing, Maintenance-free (SF-1B)

 
DU-B
Material Specifications
 
DU-B thrust washers
Metric Sizes
 
     
   

  DUB thrust washer, PTFE lined, BRONZE backing (SF-1B)  

Sintered PTFE and Bronze on Bronze Backing (Maintenance-free Material)
PTFE / Fibre + Bronze + Bronze Backing

Features
Suitable for dry running, low coefficient of friction, lower wear, good sliding characteristics, the transfer film created can protect the mating metal surface, suitable for rotary and oscillating movement. Very high chemical resistance, low absorption of water and swelling, also performs very good lubrication feature, the bronze backing provides the improved corrosion resistance comparing with SBU bearings.


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. Bronze backing, provides exceptionally high load carrying capacity, excellent heat dissipation and very good corrosion resistance.


Technical Data

Physical and Mechanical Properties

Usage

Thermal Conductivity λ

60

W/mK

dry

very good

Maximum Operating Temperature Tmax

280

°C

oil lubricated

good

Minimum Operating Temperature Tmin

-200

°C

grease lubricated

fair

Compressive Yield Strength σc

300

N/mm2

water lubricated

good

Maximum Static Load Psta,max

140

N/mm2

process fluid lubricated

fair

Maximum Dynamic Load Pdyn,max

140

N/mm2

 

Maximum Sliding Speed V-dry

2.5

m/s

Maximum PV Factor-dry, continuous operation

1.8

N/mm2 * m/s

Maximum PV Factor-dry, intermittent operation

3.5

N/mm2 * m/s

Coefficient of friction f-dry

0.02-0.25

 

 

Coefficient of friction f-oil lubricated

0.02-0.12

 

 


Typical Applications

This 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.


Other Standard DU-B Shapes

   

 


DU-B bearing & DU-B thrust washers (SF-1B series)
 

         
WC24SBUB | 26x44x1.5 mm   WC26SBUB | 28x48x1.5 mm        

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WC08DUB  WC10DUB  WC12DUB  WC14DUB  WC16DUB  WC18DUB  WC20DUB  WC22DUB  WC24DUB  WC25DUB  WC30DUB  WC35DUB  WC40DUB  WC45DUB  WC50DUB  WC60DUB

DUB06  DUB07  DUB08  DUB09  DUB10  DUB11  DUB12  DUB14  DUB16  DUB18  DUB20  DUB22  DUB24  DUB26  DUB28  DUB30  DUB32