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 Antifriction graphite-fluoroplastic materials


Graphite-fluoroplastic material of the grade KB
Is used to manufacture shells for thrust and radial slipping bearings operating in the stream of fluids (antifreeze, sea and fresh water, oil products, spirit, etc.) at high sliding speeds and pressure.

Size of moulds, mm
 Diameter:  
 External  70  100  115  130  140  175  230  285  325
 Internal  24  34  50  50  50  100  150  215  260
 Hight  25-150  25-150  25-150  25-150  25-150  25-150  25-150  25-150  25-150

Phisico-mechanical and thermal properties
  Density, kg/m3 (g/cm3), min.   2100 (2.10)
  Hardness, Mpa (kgc/mm2), min.   34.3 (3.5)
  Nominal yield compressive stress, MPa (kgc/cm3), min.   13.7 (140)
  Thermal coefficient of linear expansion in the interval
  of temperatures 293-473K (20-200∞ C),
  10 1/K parallel to the pressing axis
  14

Operating life of thrust and radial slipping bearings of electric pumps made of the material KB at the loads up to 6 MPa and sliding speed up to 15 m/s amounts to 7000 hours, and at the loads up to 4 Mpa Ц 10000 hours.

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