IB017

 

Material
Steel ( DIN-St12|ASTM-A366/A366M-97|JIS-SPCC ) +
Bronze ( CuSn8Zn3 )
modified PTFE

Introduction
Dry bearings, for shock absorbers, made of low carbon steel as base material, are produced by the process of being sintered bronze powder as medium layer and coated PTFE as lubrication layer. They are in conformity with the European RoHS environmental protection standards and widely used in the applications of all kinds of shock absorbers due to the advantages of lead free, low friction coefficient,  good self-lubricating and good wear resistance.
 

Usage

 

dry

  good

oil lubricated

  very good

grease lubricated

  good

water lubricated

  fair

process fluid lubricated

  good

 

Physical and Mechanical Properties

thermal conductivity λ

  40 W/mK

max. operating temperature Tmax

  +280

min. operating temperature Tmin

  -200

compressive yield strength δc

  350 N/mm

max. static load Psta,max

  250 N/mm

max. dynamic load Pdyn,max

  140 N/mm

max. sliding speed v-oil lubricated

  5.0 m/s

max. sliding speed v-dry

  2.5 m/s

max. PV factor-dry

  1.0 N/mm2·m/s

max. PV factor- oil lubricated

  10.0 N/mm2·m/s

coefficient of friction f-dry

  0.04-0.25

coefficient of friction f-oil lubricated

  0.02-0.08

shaft surface finish Ra-dry

  0.4±0.1 µm

shaft hardness

  200HB

  

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