{"id":4554,"date":"2026-04-09T08:25:52","date_gmt":"2026-04-09T08:25:52","guid":{"rendered":"https:\/\/hydrathpower.com\/?p=4554"},"modified":"2026-04-09T08:25:52","modified_gmt":"2026-04-09T08:25:52","slug":"iso-4406-explicada-una-guia-completa-de-los-codigos-de-limpieza-del-aceite-hidraulico","status":"publish","type":"post","link":"https:\/\/hydrathpower.com\/es\/iso-4406-explained-a-complete-guide-to-hydraulic-oil-cleanliness-codes\/","title":{"rendered":"Explicaci\u00f3n de la norma ISO 4406: Gu\u00eda completa de los c\u00f3digos de limpieza del aceite hidr\u00e1ulico"},"content":{"rendered":"<p><span style=\"font-size: 1.7em; font-weight: bold;\">Introducci\u00f3n<\/span><\/p>\n<section class=\"introduction\">Los sistemas hidr\u00e1ulicos dependen de un fluido limpio para funcionar con fiabilidad. Incluso las part\u00edculas m\u00e1s peque\u00f1as -visibles s\u00f3lo al microscopio- provocan desgaste, agarrotamiento y fallos prematuros en componentes de precisi\u00f3n como servov\u00e1lvulas, bombas de pist\u00f3n y v\u00e1lvulas de control direccional. El sitio <a href=\"https:\/\/www.iso.org\/standard\/72618.html\">ISO 4406<\/a> proporciona un lenguaje universal para comunicar los niveles de limpieza de los fluidos, lo que permite a los ingenieros especificar los requisitos, controlar las condiciones y seleccionar la filtraci\u00f3n adecuada.<\/section>\n<section class=\"definition\">\n<h2>\u00bfQu\u00e9 es la norma ISO 4406?<\/h2>\n<p>ISO 4406:1999 es la norma internacional para codificar el nivel de contaminaci\u00f3n por part\u00edculas s\u00f3lidas en los fluidos hidr\u00e1ulicos. La norma utiliza un c\u00f3digo de tres n\u00fameros separados por barras, como 19\/17\/14, en el que cada n\u00famero representa un intervalo de tama\u00f1o de part\u00edcula.<\/p>\n<p>Los tres n\u00fameros corresponden a:<\/p>\n<ul>\n<li><strong>Primer n\u00famero<\/strong>: Part\u00edculas \u2265 4 \u03bcm (por mL)<\/li>\n<li><strong>Segundo n\u00famero<\/strong>: Part\u00edculas \u2265 6 \u03bcm (por mL)<\/li>\n<li><strong>Tercer n\u00famero<\/strong>: Part\u00edculas \u2265 14 \u03bcm (por mL)<\/li>\n<\/ul>\n<p>ISO 4406 mide las part\u00edculas mediante contadores de part\u00edculas l\u00e1ser. El instrumento cuenta las part\u00edculas que rompen un rayo l\u00e1ser al pasar el fluido y, a continuaci\u00f3n, clasifica los resultados en rangos de tama\u00f1o normalizados.<\/p>\n<\/section>\n<section class=\"interpretation\">\n<h2>C\u00f3mo leer los c\u00f3digos ISO 4406<\/h2>\n<p>Cada n\u00famero del c\u00f3digo ISO 4406 va de 0 a 28, lo que representa rangos de recuento de part\u00edculas y no recuentos exactos. Un c\u00f3digo de 22 significa de 20.000 a 40.000 part\u00edculas por mililitro para ese intervalo de tama\u00f1o.<\/p>\n<p>Cada incremento en el n\u00famero de c\u00f3digo duplica el rango de recuento de part\u00edculas. Esto significa que un peque\u00f1o aumento en el c\u00f3digo representa un salto significativo en el nivel de contaminaci\u00f3n.<\/p>\n<h3>Tabla de c\u00f3digos ISO 4406<\/h3>\n<table>\n<thead>\n<tr>\n<th>C\u00f3digo ISO<\/th>\n<th>Part\u00edculas por mL (Min)<\/th>\n<th>Part\u00edculas por mL (M\u00e1x)<\/th>\n<th>Nivel de limpieza<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>9<\/td>\n<td>2.5<\/td>\n<td>5<\/td>\n<td>Muy limpio<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>20<\/td>\n<td>40<\/td>\n<td>Limpiar<\/td>\n<\/tr>\n<tr>\n<td>15<\/td>\n<td>160<\/td>\n<td>320<\/td>\n<td>Aceptable<\/td>\n<\/tr>\n<tr>\n<td>18<\/td>\n<td>1,300<\/td>\n<td>2,500<\/td>\n<td>Marginal<\/td>\n<\/tr>\n<tr>\n<td>19<\/td>\n<td>2,500<\/td>\n<td>5,000<\/td>\n<td>Contaminado<\/td>\n<\/tr>\n<tr>\n<td>22<\/td>\n<td>20,000<\/td>\n<td>40,000<\/td>\n<td>Muy sucio<\/td>\n<\/tr>\n<tr>\n<td>24<\/td>\n<td>80,000<\/td>\n<td>160,000<\/td>\n<td>Muy sucio<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Ejemplo pr\u00e1ctico<\/h3>\n<p>Considere un informe de muestra de aceite que muestre el c\u00f3digo ISO 19\/17\/14:<\/p>\n<ul>\n<li><strong>19<\/strong> = 2.500 a 5.000 part\u00edculas \u2265 4 \u03bcm por mL.<\/li>\n<li><strong>17<\/strong> = 630 a 1.250 part\u00edculas \u2265 6 \u03bcm por mL.<\/li>\n<li><strong>14<\/strong> = 40 a 80 part\u00edculas \u2265 14 \u03bcm por mL.<\/li>\n<\/ul>\n<p>El c\u00f3digo 22\/18\/13 contiene cuatro veces m\u00e1s part\u00edculas que el 20\/16\/11. Peque\u00f1as diferencias en el n\u00famero de c\u00f3digo representan grandes diferencias de contaminaci\u00f3n.<\/p>\n<\/section>\n<section class=\"requirements\">\n<h2>Requisitos de limpieza de los componentes<\/h2>\n<p>Diferentes <a href=\"\/components\/\">componentes hidr\u00e1ulicos<\/a> toleran la contaminaci\u00f3n de forma diferente en funci\u00f3n de las distancias entre las superficies m\u00f3viles. Los componentes de precisi\u00f3n requieren un fluido m\u00e1s limpio.<\/p>\n<table>\n<thead>\n<tr>\n<th>Componente<\/th>\n<th>Despeje t\u00edpico<\/th>\n<th>C\u00f3digo ISO de destino<\/th>\n<th>Filtro recomendado<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Servov\u00e1lvulas<\/td>\n<td>0,5-4 \u03bcm<\/td>\n<td>14\/12\/9<\/td>\n<td>3 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td>V\u00e1lvulas proporcionales<\/td>\n<td>2-8 \u03bcm<\/td>\n<td>15\/13\/10<\/td>\n<td>5 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td>Bombas\/motores de pist\u00f3n<\/td>\n<td>0,5-5 \u03bcm<\/td>\n<td>16\/14\/11<\/td>\n<td>6 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td>Bombas\/motores de paletas<\/td>\n<td>0,5-13 \u03bcm<\/td>\n<td>17\/15\/12<\/td>\n<td>10 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td>Bombas\/motores de engranajes<\/td>\n<td>0,5-25 \u03bcm<\/td>\n<td>18\/16\/13<\/td>\n<td>12 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td>V\u00e1lvulas direccionales<\/td>\n<td>2-40 \u03bcm<\/td>\n<td>18\/16\/13<\/td>\n<td>12 \u03bcm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Los fabricantes de bombas de pist\u00f3n suelen especificar un nivel m\u00ednimo de limpieza de 19\/17\/14. El incumplimiento de este requisito anula las garant\u00edas y acelera el desgaste. El incumplimiento de este requisito anula las garant\u00edas y acelera el desgaste.<\/p>\n<\/section>\n<section class=\"standards-comparison\">\n<h2>ISO 4406 vs NAS 1638 vs GB\/T 14039<\/h2>\n<p>Tres normas regulan la limpieza de los fluidos en distintas regiones:<\/p>\n<table>\n<thead>\n<tr>\n<th>Est\u00e1ndar<\/th>\n<th>Regi\u00f3n<\/th>\n<th>Formato del c\u00f3digo<\/th>\n<th>Tama\u00f1o de las part\u00edculas<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ISO 4406<\/td>\n<td>Internacional<\/td>\n<td>XX\/AAA\/ZZ<\/td>\n<td>4, 6, 14 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td>NAS 1638<\/td>\n<td>EE.UU.<\/td>\n<td>Clase 00-12<\/td>\n<td>5, 15, 25, 50, 100 \u03bcm<\/td>\n<\/tr>\n<tr>\n<td>GB\/T 14039<\/td>\n<td>China<\/td>\n<td>Equivalente a ISO 4406<\/td>\n<td>4, 6, 14 \u03bcm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>La norma ISO 4406 se ha convertido en la norma mundial por su amplia cobertura granulom\u00e9trica y sus c\u00f3modos m\u00e9todos de detecci\u00f3n. GB\/T 14039-2022 es equivalente a ISO 4406, lo que garantiza la coherencia entre las especificaciones chinas e internacionales.<\/p>\n<\/section>\n<section class=\"implementation\">\n<h2>C\u00f3mo alcanzar el objetivo de limpieza<\/h2>\n<p>Siga estos pasos para establecer y mantener una limpieza adecuada de los fluidos:<\/p>\n<h3>Paso 1: Realizar el an\u00e1lisis del aceite<\/h3>\n<p>Conecte un contador de part\u00edculas port\u00e1til directamente a los puertos de muestreo del sistema para obtener la lectura m\u00e1s precisa. Como alternativa, utilice un kit de prueba de parche de an\u00e1lisis de aceite para una evaluaci\u00f3n visual de la contaminaci\u00f3n, o env\u00ede muestras de botellas a un laboratorio para realizar pruebas exhaustivas.<\/p>\n<p>Realice an\u00e1lisis de aceite trimestrales para realizar un seguimiento de las tendencias de limpieza a lo largo del tiempo.<\/p>\n<h3>Paso 2: Aplicar la filtraci\u00f3n<\/h3>\n<p>Seleccione la filtraci\u00f3n en funci\u00f3n de su c\u00f3digo ISO objetivo y de los requisitos de los componentes. Las opciones incluyen:<\/p>\n<ul>\n<li><strong>Paneles filtrantes espec\u00edficos<\/strong>: Acondicionamiento en l\u00ednea para sistemas en servicio<\/li>\n<li><strong>Carros filtrantes port\u00e1tiles<\/strong>: Unidades vers\u00e1tiles para transferencia y filtraci\u00f3n de emergencia<\/li>\n<li><strong>Filtros respiraderos<\/strong>: Evitar la contaminaci\u00f3n ambiental durante la respiraci\u00f3n en el dep\u00f3sito<\/li>\n<li><strong>Filtraci\u00f3n de asa renal fuera de l\u00ednea<\/strong>: Filtraci\u00f3n fina continua sin afectar al funcionamiento del sistema<\/li>\n<\/ul>\n<h3>Paso 3: Establecer un protocolo de mantenimiento<\/h3>\n<ul>\n<li>Sustituya los filtros a intervalos recomendados por el fabricante<\/li>\n<li>Supervisar la presi\u00f3n diferencial del filtro como indicador de alerta temprana<\/li>\n<li>Mantenga limpios los orificios de muestreo cuando extraiga muestras de aceite<\/li>\n<li>Guarde el fluido nuevo en recipientes limpios y f\u00edltrelo antes de a\u00f1adirlo a los sistemas<\/li>\n<\/ul>\n<\/section>\n<section class=\"faq\">\n<h2>Preguntas frecuentes<\/h2>\n<h3>\u00bfQu\u00e9 significa el c\u00f3digo de limpieza ISO 4406?<\/h3>\n<p>El c\u00f3digo ISO 4406 informa del recuento de part\u00edculas en tres rangos de tama\u00f1o. Los n\u00fameros m\u00e1s bajos indican un fluido m\u00e1s limpio. El c\u00f3digo 19\/17\/14 significa de 2.500 a 5.000 part\u00edculas de 4 \u03bcm y mayores, de 630 a 1.250 de 6 \u03bcm y mayores, y de 40 a 80 de 14 \u03bcm y mayores por mililitro.<\/p>\n<h3>\u00bfCon qu\u00e9 frecuencia debo comprobar la limpieza del aceite hidr\u00e1ulico?<\/h3>\n<p>Compruebe la limpieza del aceite trimestralmente durante el mantenimiento regular. Realice pruebas con mayor frecuencia despu\u00e9s de cualquier modificaci\u00f3n del sistema, sustituci\u00f3n de componentes o incidente de contaminaci\u00f3n. El control regular identifica las tendencias antes de que provoquen aver\u00edas.<\/p>\n<h3>\u00bfQu\u00e9 ocurre si la limpieza del aceite es peor de lo exigido?<\/h3>\n<p>El fluido contaminado acelera el desgaste de bombas, v\u00e1lvulas y cilindros. Los componentes de precisi\u00f3n, como las servov\u00e1lvulas, experimentan un comportamiento de stick-slip, degradaci\u00f3n de la precisi\u00f3n y fallos prematuros. Seg\u00fan datos del sector, aproximadamente 80% de los fallos de los sistemas hidr\u00e1ulicos est\u00e1n relacionados con la contaminaci\u00f3n.<\/p>\n<h3>\u00bfQu\u00e9 c\u00f3digo ISO debo especificar para mi sistema hidr\u00e1ulico?<\/h3>\n<p>Empiece por los requisitos de su componente m\u00e1s sensible. Las bombas de pist\u00f3n suelen requerir 19\/17\/14 como m\u00ednimo. Los sistemas de servov\u00e1lvulas necesitan un fluido mucho m\u00e1s limpio, normalmente 14\/12\/9 o mejor. Especifique un fluido m\u00e1s limpio que el requisito m\u00e1s estricto para disponer de un margen de seguridad.<\/p>\n<\/section>\n<section class=\"conclusion\">\n<h2>Conclusi\u00f3n<\/h2>\n<p>La norma ISO 4406 proporciona el lenguaje universal para la limpieza de los fluidos hidr\u00e1ulicos. Comprender c\u00f3mo leer el c\u00f3digo de tres n\u00fameros, adaptar los niveles de limpieza a los requisitos de los componentes y aplicar la filtraci\u00f3n adecuada permite a ingenieros y t\u00e9cnicos evitar fallos relacionados con la contaminaci\u00f3n y prolongar la vida \u00fatil de los equipos.<\/p>\n<p>El an\u00e1lisis peri\u00f3dico del aceite, la filtraci\u00f3n adecuada y unas pr\u00e1cticas de mantenimiento coherentes mantienen los sistemas hidr\u00e1ulicos funcionando dentro de los c\u00f3digos de limpieza objetivo. Este enfoque reduce el tiempo de inactividad, prolonga la vida \u00fatil de los componentes y protege las inversiones en equipos.<\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>Introduction Hydraulic systems depend on clean fluid to function reliably. Even small particles\u2014visible only under a microscope\u2014cause wear, seizure, and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4557,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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