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

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

Suitable for dry running, low coefficient of friction, lower wear, good sliding characteristics, the transfer
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.


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



Maximum Operating Temperature Tmax





Minimum Operating Temperature Tmin



oil lubricated

very good

Maximum Static Load Psta,max



grease lubricated


Maximum Dynamic Load Pdyn,max



water lubricated


Maximum Sliding Speed V-dry



process fluid lubricated


Maximum Sliding Speed V-oil lubricated




Maximum PV Factor-dry


N/mm2 * m/s

Maximum PV Factor-oil lubricated


N/mm2 * m/s

Coefficient of friction f-dry



Coefficient of friction f-oil lubricated



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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