{"id":3730,"date":"2021-01-21T10:50:25","date_gmt":"2021-01-21T09:50:25","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=3730"},"modified":"2025-09-29T13:15:15","modified_gmt":"2025-09-29T11:15:15","slug":"esferas-de-rubi","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/es\/productos\/bolas-de-rubi-y-zafiro\/esferas-de-rubi\/","title":{"rendered":"Bolas de rub\u00ed"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Corundum\">Bolas de rub\u00ed \u2013 Componentes de precisi\u00f3n de alto rendimiento<\/a><\/h2>\n<p>Las bolas de rub\u00ed son esferas de precisi\u00f3n fabricadas en rub\u00ed sint\u00e9tico (Al\u2082O\u2083:Cr), una forma cristalina del corind\u00f3n dopada con cromo. Reconocidas por su dureza excepcional \u2014solo superada por el diamante\u2014 y su notable resistencia al desgaste, son indispensables cuando se requiere durabilidad, estabilidad dimensional y resistencia a condiciones extremas. Sus propiedades \u00fanicas las hacen ideales para aeroespacial, instrumentaci\u00f3n biom\u00e9dica e ingenier\u00eda de alto vac\u00edo.<\/p>\n<h3>\ud83d\udd27 Especificaciones t\u00e9cnicas clave<\/h3>\n<ul>\n<li><strong>Estructura cristalina<\/strong>: Monocristal hexagonal rombo\u00e9drico<\/li>\n<li><strong>Composici\u00f3n<\/strong>: Al\u2082O\u2083:Cr (rub\u00ed sint\u00e9tico)<\/li>\n<li><strong>Pureza<\/strong>: 99,99%<\/li>\n<li><strong>Densidad<\/strong>: ~3,99 g\/cm\u00b3<\/li>\n<li><strong>Dureza Mohs<\/strong>: 9<\/li>\n<li><strong>Dureza Knoop<\/strong>: ~2200 (eje C), ~1800 (perpendicular al eje C)<\/li>\n<li><strong>M\u00f3dulo de Young<\/strong>: ~440 GPa<\/li>\n<li><strong>Punto de fusi\u00f3n<\/strong>: ~2050 \u00b0C<\/li>\n<li><strong>Conductividad t\u00e9rmica<\/strong>: ~40 W\/m\u00b7K a 300 K<\/li>\n<li><strong>Expansi\u00f3n t\u00e9rmica<\/strong>: 6,2 \u00d7 10\u207b\u2076 \/\u00b0C (paralela al eje C), 5,4 \u00d7 10\u207b\u2076 \/\u00b0C (perpendicular)<\/li>\n<li><strong>Resistividad el\u00e9ctrica<\/strong>: &gt;10\u00b9\u00b2 \u03a9\u00b7cm (aislante)<\/li>\n<li><strong>Constante diel\u00e9ctrica<\/strong>: 10,6 (paralela al eje C), 8,6 (perpendicular)<\/li>\n<\/ul>\n<h3>\u2705 Ventajas<\/h3>\n<ul>\n<li><strong>Dureza y resistencia al desgaste excepcionales<\/strong>: Larga vida \u00fatil en entornos de alta fricci\u00f3n.<\/li>\n<li><strong>Alta estabilidad t\u00e9rmica<\/strong>: Opera eficazmente hasta ~2050 \u00b0C.<\/li>\n<li><strong>Inercia qu\u00edmica de las Bolas de Rub\u00ed<\/strong>: Resistentes a la mayor\u00eda de los \u00e1cidos y \u00e1lcalis.<\/li>\n<li><strong>Estabilidad dimensional<\/strong>: Mantienen la forma bajo esfuerzos mec\u00e1nicos y t\u00e9rmicos.<\/li>\n<li><strong>Aislamiento el\u00e9ctrico<\/strong>: Ideales cuando se requieren materiales no conductores.<\/li>\n<li><strong>Claridad \u00f3ptica<\/strong>: \u00datiles cuando la transparencia es esencial.<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Aplicaciones de las Bolas de Rub\u00ed<\/h3>\n<p>Las bolas de rub\u00ed se utilizan en diversas aplicaciones de alta precisi\u00f3n, entre ellas:<\/p>\n<ul>\n<li><strong>Cojinetes de precisi\u00f3n<\/strong>: Relojes mec\u00e1nicos, giroscopios y otros instrumentos de baja fricci\u00f3n.<\/li>\n<li><strong>Sistemas \u00f3pticos<\/strong>: Conectores de fibra \u00f3ptica, sistemas l\u00e1ser y dispositivos de alineaci\u00f3n \u00f3ptica.<\/li>\n<li><strong>Instrumentos de medici\u00f3n<\/strong>: Caudal\u00edmetros, lectores de c\u00f3digos de barras y otros equipos de metrolog\u00eda.<\/li>\n<li><strong>Dispositivos aeroespaciales y biom\u00e9dicos<\/strong>: Entornos que exigen alta fiabilidad y rendimiento.<\/li>\n<\/ul>\n<h3>\ud83d\udce6 Grados y tama\u00f1os disponibles<\/h3>\n<p>Las bolas de rub\u00ed est\u00e1n disponibles en varios grados y tama\u00f1os para satisfacer requisitos espec\u00edficos:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>Grados<\/strong>: G1, G2, G3, G5, G10 hasta G25<\/a><\/li>\n<li><strong>Tama\u00f1os<\/strong>: Di\u00e1metros de 0,16 mm a 10 mm; tama\u00f1os a medida bajo pedido.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Bolas de rub\u00ed \u2013 Componentes de precisi\u00f3n de alto rendimiento Las bolas de rub\u00ed son esferas de precisi\u00f3n fabricadas en rub\u00ed sint\u00e9tico (Al\u2082O\u2083:Cr), una forma cristalina del corind\u00f3n dopada con cromo. Reconocidas por su dureza excepcional \u2014solo superada por el diamante\u2014 y su notable resistencia al desgaste, son indispensables cuando se requiere durabilidad, estabilidad [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9236,"parent":3728,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3730","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Bolas de rub\u00ed \u2013 dureza y estabilidad dimensional<\/title>\n<meta name=\"description\" content=\"Bolas de rub\u00ed destacan por su extrema dureza, resistencia al desgaste y precisi\u00f3n en aplicaciones \u00f3pticas, de medici\u00f3n e industriales.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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