du bushing is composed of a specially designed surface layer of
PTFE formulation and is specifically applied for the high PV bushes
of gear oil pumps. It is to be used in hydrodynamic or boundary
lubricating condition of medium or high pressure gear oil pumps
such as P=16-25 Mpa, V=3.5-5 m/s. It shows the benefits of low
friction coefficient, wear resistant and anti-impact properties. At
hydrodynamic lubrication, the PV limit reaches to 120N/mm2..m/s. It is a best choice for the bushes of various kinds of gear
pumps as well as plunger pumps, vane pumps and so on.
Bush Technical Parameters
|Load capacity||Static||N/m m²||250||Max line speed V||m/s||10|
|Dynamic||N/m m²||140||Temp. limit||℃||-195~+270|
|Oscillating||N/m m²||60||Friction Coef.||u||0.03~0.18|
|Max PV limit||Oil||N/m m².m/s||60||Thermal conductivity||W/m.K||13|
|Dry||N/m m².m/s||4.3||Linear expansion||11x10-6/k|
Bush O.D Tolerances Table
Bush Application Feature
1. Small friction coefficient and stable under the condition of oil
2. Good wear resistance, good impact resistance.
3. PV value can reach 120N/mm².m/s under the condition of fluid
4. Has been widely used in all kinds of gear pump, piston pump,
vane pump and other occasions, especially applied in the middle and
high pressure gear pump under the conditions of fluid lubrication
or boundary lubrication.