Hace algunas semanas se publicó un consejo acerca de sellos hidráulicos de émbolo de cilindro. (Una equivocación popular acerca de cilindros hidráulicos es que si el sello de émbolo se sale, el cilindro puede arrastrarse hacia abajo.) La merma del sello del émbolo puede ser probada tapando la tapa el puerto final, y aplicando aire comprimido o líquido hidráulico a la barra del puerto final. (Nota - Utiliza el medio que el sistema se diseña para usar - los sellos para aplicaciones hidráulicas pueden ser diferentes a los sellos para aplicaciones neumáticas. También, observe los límites de la presión para operar el sistema para prevenir sobre presión)

Si los sellos gotean bastante por la barra para mover bajo la carga, la barra DEBE EXTENDERSE durante esta prueba. (Esto es a causa de la diferencia entre el área del émbolo expuesta a la presión - el lado de la barra tiene menos área, por lo tanto la fuerza aplicada es más pequeña.) Porque la barra no se mueve no puede eliminar los sellos malos de émbolo, pero si la barra se mueve al exterior, los sellos se evitan.

Consejo enviado por nuestro lector Edward Allen
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