IB021

 

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

Introduction
Marginally lubricated bearings(blue POM), made of low carbon steel as base material, are produced by the process of being sintered bronze powder as medium layer and coated blue POM as layer. They are in conformity with the European RoHS environmental protection standards and widely used in the applications of truck, hydraulic transmission and engineering machinery due to the advantages of good wear resistance and good load capacity.

Usage

dry

  poor

oil lubricated

  good

grease lubricated

  very good

water lubricated

  poor

process fluid lubricated

  poor

 

Physical and Mechanical Properties

thermal conductivity λ

  52 W/mK

max. operating temperature Tmax

  +130

min. operating temperature Tmin

  -40

compressive yield strength δc

  380 N/mm

max. static load Psta,max

  140 N/mm

max. dynamic load Pdyn,max

  70 N/mm

max. sliding speed v-greased

  2.5 m/s

max. PV factor- greased

  2.8 N/mm2·m/s

coefficient of friction f-greased

  0.06-0.12

shaft surface finish Ra

  0.4 µm

shaft hardness-normal

  200HB

shaft hardness-for service life2000 hours

  350HB

 

 

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