{"id":496,"date":"2026-09-28T20:40:05","date_gmt":"2026-09-28T20:40:05","guid":{"rendered":"https:\/\/zhuoruimech.com\/?p=496"},"modified":"2026-09-28T20:40:05","modified_gmt":"2026-09-28T20:40:05","slug":"prufung-der-saugleitung-einer-hydraulikpumpe-auf-kavitation","status":"publish","type":"post","link":"https:\/\/zhuoruimech.com\/de\/hydraulic-pump-cavitation-suction-line-checks\/","title":{"rendered":"Kavitation bei Hydraulikpumpen: \u00dcberpr\u00fcfen Sie die Saugseite, bevor Sie die Pumpe austauschen"},"content":{"rendered":"

Eine laut laufende Hydraulikpumpe wird oft ausgetauscht, bevor jemand die Einlassbedingungen misst. Wenn die Pumpe nicht gen\u00fcgend \u00d6l mit dem erforderlichen Einlassdruck erh\u00e4lt, k\u00f6nnen sich in ihrem Inneren Kavit\u00e4ten bilden und zusammenbrechen. Dies kann zu Ger\u00e4uschen und Sch\u00e4den f\u00fchren. Luft, die durch eine lockere Saugverbindung eindringt, kann \u00e4hnliche Symptome hervorrufen, sodass Ger\u00e4usche allein kein Beweis f\u00fcr Kavitation sind.<\/p>\n

Messung am Pumpeneinlass<\/h2>\n

Start with the pump manufacturer’s permitted inlet-pressure range at the relevant speed and fluid viscosity. Measure pressure or vacuum as close to the inlet port as the service procedure allows. Compare cold start, normal operation and the highest-flow phase. Bosch Rexroth emphasizes that acceptable suction pressure depends on the specific pump and that line diameter, length, lift and oil viscosity all affect inlet resistance.<\/p>\n

Den gesamten Ansaugweg \u00fcberpr\u00fcfen<\/h2>\n

\u00dcberpr\u00fcfen Sie den Mindest\u00f6lstand im Vorratsbeh\u00e4lter, verstopfte Siebe, einen eingeklemmten Saugschlauch, zu viele Bogenst\u00fccke, zu kleine Rohrleitungen sowie einen Tank, der weit unterhalb oder weit entfernt von der Pumpe angeordnet ist. Kaltes \u00d6l hat eine h\u00f6here Viskosit\u00e4t und kann den Druckverlust stark erh\u00f6hen. HYDAC weist darauf hin, dass die Ansaugelemente unterhalb des Mindest\u00f6lstands bleiben m\u00fcssen und dass eine hohe Viskosit\u00e4t beim Kaltstart den Druckabfall \u00fcber einem Schmutzf\u00e4nger erh\u00f6hen kann.<\/p>\n

Unterscheidung zwischen Kavitation und Lufteintritt<\/h2>\n

A leaking joint on a suction line may admit air without leaking much oil outward. Inspect seals, fittings and hose condition and look for persistent foam or milky oil in the reservoir. Flowing air bubbles and vapor cavities require different corrective actions. Also consider mechanical coupling faults and valve chatter when interpreting noise. If damage is suspected, follow the pump manufacturer’s inspection procedure rather than continuing to run a starved unit.<\/p>\n

Ein vern\u00fcnftiger Korrekturauftrag<\/h2>\n
    \n
  1. Notieren Sie den Einlassdruck, die Drehzahl, die \u00d6ltemperatur und den Betriebsdurchfluss.<\/li>\n
  2. \u00d6lstand \u00fcberpr\u00fcfen und den Zustand des Ansaugwegs kontrollieren.<\/li>\n
  3. Vergleichen Sie die Verluste in den verlegten Rohrleitungen, Schl\u00e4uchen und Sieben mit den Pumpendaten.<\/li>\n
  4. Beheben Sie Einschr\u00e4nkungen oder Luftlecks und wiederholen Sie anschlie\u00dfend die Messungen unter denselben Betriebsbedingungen.<\/li>\n
  5. Sollten die Symptome weiterhin bestehen, \u00fcberpr\u00fcfen Sie den Zustand der Pumpe und die Sauberkeit des \u00d6ls.<\/li>\n<\/ol>\n

    Unser Leitfaden zur \u00d6lreinheit<\/a> behandelt Filterziele; unser HPU-Gr\u00f6\u00dfentabelle<\/a> helps document the demand on the pump. Final diagnosis requires measurements and the selected pump’s limits.<\/p>\n

    Quellenangaben: Anleitung zum Umgang mit Pumpenausf\u00e4llen bei Bosch Rexroth<\/a>; HYDAC-Leitfaden f\u00fcr Ansaugfilter<\/a>. Titelbild: urspr\u00fcngliche konzeptionelle Skizze.<\/small><\/p>","protected":false},"excerpt":{"rendered":"

    Ein praktischer Leitfaden zur Diagnose von niedrigem Ansaugdruck, verengten Saugleitungen, kaltem \u00d6l und anderen Ursachen, die mit Kavitation an Hydraulikpumpen in Zusammenhang stehen.<\/p>","protected":false},"author":1,"featured_media":495,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yj_news_hero_background_id":0,"_yj_news_eyebrow":"","_yj_news_technical_topic":"","_yj_news_cta_title":"","_yj_news_cta_description":"","_yj_news_cta_label":"","_yj_news_cta_url":"","_yj_news_related_product_ids":[],"_yj_news_related_case_ids":[],"footnotes":""},"categories":[50],"tags":[],"class_list":["post-496","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-guides"],"yoast_head":"\nHydraulic Pump Cavitation: Check the Suction Side Before Replacing the Pump - Yangzhou Jiangdu Yongjian Co., Ltd<\/title>\n<meta name=\"description\" content=\"A practical guide to diagnosing low 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