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This product has the same structure as SF-11 and is a special bearing for gear oil pumps. Specially formulated products designed according to the high PV value conditions of gear oil pumps. It has the characteristics of small and stable friction coefficie……


Performance   Data
The name of the material Carbon Steel+Copper Powder/Bronze+(PTFE+Filler/Filler)
Maximum Load-Bearing Pressure P (Dry Friction) Static load N/mm2 250
  Dynamic load N/mm2 140
  Swing N/mm2 60
Maximum linear velocity V Dry friction m/s 2.5
  Oil lubrication m/s >5
Highest PV value Dry friction N/mm2·m/s 1.0
  Oil-lubricated N/mm2·m/s 10
Coefficient of friction u Dry rubbing 0.08~0.25
  Oil lubrication 0.02~0.08
Matching shaft diameter Hardness HRC >220
  Roughness Ra 0.4~1.25
Operating temperature °C -200~+280
Thermal conductivity W/m·K 40
Coefficient of linear expansion (axial) 11×10-6/k
Exterior surface coating Copper or tin