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This paper presents the use of plastics in the construction of hydraulic device components, with particular emphasis on pumps. Particular attention was paid to the POM (polyoxymethylene) material, which, due to its high stiffness, low abrasion and good dimensional stability, is widely used in the construction of rotors, bearings and moving parts of pumps. The advantages of using plastics in hydraulic applications in the context of operational durability, production efficiency and resistance to aggressive working environments were also indicated. The aim of the paper was to analyze the effect of rotational speed and pressure force on friction resistance between a plastic element and a steel counter-element under conditions of mixed lubrication with Renolin VG46 hydraulic oil. The tests were carried out using the T-11 tribotester in a ball-on-disc configuration. The obtained results were used to develop a mathematical model describing the friction force as a function of load and speed. The second-order regression model is characterized by high agreement with experimental data (R2 = 0.916). The obtained results allow for a better understanding of the tribological properties of POM and their impact on the efficiency and durability of pump components, which is important in the context of designing and optimizing hydraulic systems.

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Analysis of Friction Resistance of POM Material for Use as a Sickle Insert in an Internal Gear Pump

  • 会议论文

  • 发表日期：

    2026年

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  • Tadeusz Leśniewski,
  • Krzysztof Towarnicki,
  • Justyna Krawczyk,
  • Grzegorz Wszelaczyński

摘要

This paper presents the use of plastics in the construction of hydraulic device components, with particular emphasis on pumps. Particular attention was paid to the POM (polyoxymethylene) material, which, due to its high stiffness, low abrasion and good dimensional stability, is widely used in the construction of rotors, bearings and moving parts of pumps. The advantages of using plastics in hydraulic applications in the context of operational durability, production efficiency and resistance to aggressive working environments were also indicated. The aim of the paper was to analyze the effect of rotational speed and pressure force on friction resistance between a plastic element and a steel counter-element under conditions of mixed lubrication with Renolin VG46 hydraulic oil. The tests were carried out using the T-11 tribotester in a ball-on-disc configuration. The obtained results were used to develop a mathematical model describing the friction force as a function of load and speed. The second-order regression model is characterized by high agreement with experimental data (R2 = 0.916). The obtained results allow for a better understanding of the tribological properties of POM and their impact on the efficiency and durability of pump components, which is important in the context of designing and optimizing hydraulic systems.