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

Guinea, Ainhoa; Aginagalde, Andrea; Tato, Wilson; Llavori, Inigo; Zabala, Alaitz

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Title

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

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Orona

Version

http://purl.org/coar/version/c_970fb48d4fbd8a85

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Access

http://purl.org/coar/access_right/c_abf2

URI

https://hdl.handle.net/20.500.11984/6650

Publisher’s version

https://doi.org/10.1007/s40544-024-0881-8

Published at

Friction Vol. 12. Pp. 2126-2138, 2024

Publisher

Springer

Keywords

polymer-on-polymer
Friction
Roughness
Sliding

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. [-]