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Research Article | Open Access

Impact of surface roughness on the coefficient of friction of polymer-on-polymer contacts for deflection pulley-rope systems in the lift industry

Ainhoa GUINEA1, Andrea AGINAGALDE1, Wilson TATO1, Iñigo LLAVORI1, Pablo GARCIA2, Leire ARRAIAGO2, Alaitz ZABALA1( )
Mechanical and Industrial Production Department, Mondragon Unibertsitatea, Mondragon 20500, Spain
Orona EIC, Orona Ideo, Hernani 20120, Spain
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Abstract

The coefficient of friction (CoF) between the deflection pulley and rope in a lift strongly affects the life span of the rope. Although surface roughness is a key factor affecting the metallic pulley–rope CoF, its effect on polymeric pulleys is unknown. The present study analyses the effect of roughness and working conditions on cast polyamide 6 (PA6G) deflection pulley–thermoplastic polyurethane (TPU)-coated rope contacts. The statistical analysis revealed that the effect of surface roughness on the CoF for low-load tests was significant. The present study contributes significantly to parameter selection in deflection pulley machining to minimise friction between the pulley and rope.

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Keywords

polymer-on-polymerfrictionroughnessdry sliding

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Friction
Volume 12 Issue 9,
September 2024
Pages 2126-2138
DOI: 10.1007/s40544-024-0881-8

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GUINEA A, AGINAGALDE A, TATO W, et al. Impact of surface roughness on the coefficient of friction of polymer-on-polymer contacts for deflection pulley-rope systems in the lift industry. Friction, 2024, 12(9): 2126-2138. https://doi.org/10.1007/s40544-024-0881-8

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Received: 05 January 2023
Revised: 17 May 2023
Accepted: 03 February 2024
Published: 01 July 2024
© The author(s) 2024.

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