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DP4B bearing, fibres and PTFE lined, BRONZE backing, composite dry bush

 
DP4-B
Specifications
 
DP4-B cylindrical bushings
Metric Sizes
 
         
          

  DP4B bearing, fibres and PTFE lined, BRONZE backing, composite dry bush  

Sintered PTFE and Polymer Fibres mixture and Bronze Powder  on Bronze Backing
PTFE / Polymer Fibres +
 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 surfaces, suitable for rotating and oscillating movement, high chemical resistance, low absorption of water and swelling. SBP4B materieal improved the friction and
much good wear 
resistance over the common SBU bearing range under lubricated operation.


Structures

1. PTFE/Polymer fibres mixture thickness 0.01~0.03mm. Lead-free bearing layer 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 mixture.
3. Bronze backing, provides exceptional high load carrying capacity, excellent heat dissipation and very good corrosion resistance.


Technical Data

Physical and Mechanical Properties

 

Usage

Maximum Operating Temperature Tmax

280

°C

dry

good

Minimum Operating Temperature Tmin

-200

°C

oil lubricated

very good

Maximum Static Load Psta,max

250

N/mm2

grease lubricated

good

Maximum Dynamic Load Pdyn,max

140

N/mm2

water lubricated

fair

Maximum Sliding Speed V-dry

2.5

m/s

process fluid lubricated

good

Maximum Sliding Speed V-oil lubricated

5

m/s

 

Maximum PV Factor-dry

1

N/mm2 * m/s

Maximum PV Factor-oil lubricated

10

N/mm2 * m/s

Coefficient of friction f-dry

0.04-0.25

-

Coefficient of friction f-oil lubricated

0.02-0.08

-


Typical Applications

DP4B is developed for high duty, oil lubricated, hydraulic applications...Automotive suspension struts, shock absorbers guide bushing, hydraulic cylinders, gear pumps, motors, axial and radial piston pumps & motors.
DP4B is 
designed mainly for using under lubricated conditions and it performs excellent wear resistance and low static/dynamic friction coefficient.


DP4B bearing, fibres and PTFE lined, BRONZE backing, composite dry bush  


Other Standard DP4B Shapes

         

 

 

DP4B bush & DP4B bearing

       
0203SBP4B | 2x3.5x3 mm        

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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