<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2223-4861</journal-id>
<journal-title><![CDATA[Centro Azúcar]]></journal-title>
<abbrev-journal-title><![CDATA[cen. az.]]></abbrev-journal-title>
<issn>2223-4861</issn>
<publisher>
<publisher-name><![CDATA[Editorial Feijóo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2223-48612020000300047</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[ESTUDIO TEÓRICO SOBRE LA POSIBILIDAD DE LOGRAR LUBRICACIÓN HIDRODINÁMICA EN LOS ÁRBOLES DE LOS MOLINOS DE CAÑA]]></article-title>
<article-title xml:lang="en"><![CDATA[THEORETICAL STUDY ABOUT THE POSSIBILITY OF ACHIEVING HYDRODYNAMIC LUBRICATION IN THE SHAFTS OF THE CANE MILLS]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Ortega]]></surname>
<given-names><![CDATA[Robert]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández-Castañeda]]></surname>
<given-names><![CDATA[Feliberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad de Ingeniería Mecánica e Industrial Departamento de Ingeniería Mecánica]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<volume>47</volume>
<numero>3</numero>
<fpage>47</fpage>
<lpage>57</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2223-48612020000300047&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2223-48612020000300047&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2223-48612020000300047&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La lubricación hidrodinámica se produce cuando se forma una película lubricante lo suficientemente gruesa que evita el contacto entre las superficies deslizantes. La obtención de este régimen de lubricación en los apoyos de los árboles de los molinos de caña disminuiría el coeficiente de fricción lo que aumentaría la eficiencia de estos equipos.  Objetivo:  Determinar la posibilidad de lograr lubricación hidrodinámica en los apoyos de los árboles de los molinos de caña.  Materiales y Métodos:  Se desarrolla una hoja de cálculo que proporciona la dependencia del espesor mínimo de la película lubricante de la holgura diametral entre el árbol y el casquillo. Al comparar la función obtenida con el espesor mínimo admisible que se recomienda en la bibliografía se obtiene el intervalo de holgura diametral en que se alcanza lubricación hidrodinámica. Se comprueba además, que la extensión de este intervalo sea suficiente para contener las tolerancias de fabricación del árbol y el casquillo.  Resultados y Discusión:  El estudio realizado muestra que se puede lograr lubricación hidrodinámica, en todas las mazas del tándem, excepto la superior del cuarto y quinto molinos.  Conclusiones:  Se concluye que es posible mejorar significativamente la eficiencia del tándem de los ingenios azucareros realizando las modificaciones necesarias al diseño del mismo de manera que se garantice un flujo suficiente de lubricante a la zona de contacto de las superficies deslizantes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Hydrodynamic lubrication occurs when a sufficiently thick lubricant film is formed that prevents contact between the sliding surfaces. This physical phenomenon is characterized by a low friction coefficient that improves machine efficiency and reduces the wear of its elements.  Objective:  A theoretical study is carried out to determine the possibility of achieving this lubrication regime in cane mills supports.  Materials and Methods:  To achieve this objective, a spreadsheet is developed that provides the dependence of the minimum lubricating film thickness on the diametric clearance between the shaft and the bushing. When comparing the obtained function with the minimum permissible thickness recommended in literature, the diametric clearance interval in which hydrodynamic lubrication is achieved is obtained. It is also verified that this interval is sufficient to contain shaft and bush manufacturing tolerances.  Results and Discussion:  The result of carried out calculation shows that hydrodynamic lubrication can be achieved in all the tandem rolls, except for the upper one of fourth and fifth mills.  Conclusions:  In this way, it is concluded that it is possible to significantly improve the efficiency of the tandem of the sugar mills by making the necessary modifications to its design in such a way that a constant supply of lubricant to the contact area of the sliding surfaces is guaranteed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[árboles]]></kwd>
<kwd lng="es"><![CDATA[lubricación hidrodinámica]]></kwd>
<kwd lng="es"><![CDATA[molinos de caña]]></kwd>
<kwd lng="es"><![CDATA[tándem.]]></kwd>
<kwd lng="en"><![CDATA[shafts]]></kwd>
<kwd lng="en"><![CDATA[hydrodynamic lubrication]]></kwd>
<kwd lng="en"><![CDATA[cane mills]]></kwd>
<kwd lng="en"><![CDATA[tandem.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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