{"id":2647,"date":"2025-10-22T12:56:30","date_gmt":"2025-10-22T12:56:30","guid":{"rendered":"https:\/\/re.leffer.de\/produkt\/hydraulische-abfangschellen\/"},"modified":"2026-02-11T07:24:52","modified_gmt":"2026-02-11T07:24:52","slug":"hydraulic-retaining-clamps","status":"publish","type":"products","link":"https:\/\/re.leffer.de\/en\/product\/hydraulic-retaining-clamps\/","title":{"rendered":"Hydraulic retaining clamps"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Retaining clamps are used in the rotary drilling process to prevent the drill string from slipping when the casing is pulled after uncoupling from the adapter. The hydraulic retaining clamp SPA can be supplied via a carrier unit or via a separate hydraulic power pack powered electrically (E-PP 5\/5) or by diesel (PP 10\/6). The clamping cylinder with load holding valve ensures that the casing string is held securely.\u00a0<\/p>\n\n\n\n    <div productsclass=\"singlepost wp-block-fbo-singlepost\" id=\"6a62020dbebff\">\n\n        \n<a href=\"https:\/\/re.leffer.de\/wp-content\/uploads\/2025\/12\/Abfangschellen.pdf\" target=\"_blank\"  class=\"postarchive__download icon icon-download\">\n   <p class=\"download__title\">Hydraulic Retaining Clamp Type SPA<\/p>\n   <div class=\"download__data\">\n        <span class=\"download__size\">239.76 KB<\/span>\n        <span class=\"download__type\">(pdf)<\/span>\n    <\/div>\n\n<\/a>\n    <\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Retaining clamps are used in the rotary drilling process to prevent the drill string from slipping when the casing is pulled after uncoupling from the adapter. The hydraulic retaining clamp SPA can be supplied via a carrier unit or via a separate hydraulic power pack powered electrically (E-PP 5\/5) or by diesel (PP 10\/6). The [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":4,"template":"","meta":{"_acf_changed":false,"featuredimage_focalpoint":[],"footnotes":""},"products-category":[125,120,119],"class_list":["post-2647","products","type-products","status-publish","hentry","products-category-hydraulische-abfangschellen-en","products-category-kellybohrverfahren-en","products-category-maschinenbau-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hydraulic retaining clamps - Leffer - Stahl- und Apparatebau<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hydraulic retaining clamps - Leffer - Stahl- und Apparatebau\" \/>\n<meta property=\"og:description\" content=\"Retaining clamps are used in the rotary drilling process to prevent the drill string from slipping when the casing is pulled after uncoupling from the adapter. The hydraulic retaining clamp SPA can be supplied via a carrier unit or via a separate hydraulic power pack powered electrically (E-PP 5\/5) or by diesel (PP 10\/6). The [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/re.leffer.de\/en\/product\/hydraulic-retaining-clamps\/\" \/>\n<meta property=\"og:site_name\" content=\"Leffer - Stahl- und Apparatebau\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-11T07:24:52+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/re.leffer.de\/en\/product\/hydraulic-retaining-clamps\/\",\"url\":\"https:\/\/re.leffer.de\/en\/product\/hydraulic-retaining-clamps\/\",\"name\":\"Hydraulic retaining clamps - Leffer - Stahl- und Apparatebau\",\"isPartOf\":{\"@id\":\"https:\/\/re.leffer.de\/#website\"},\"datePublished\":\"2025-10-22T12:56:30+00:00\",\"dateModified\":\"2026-02-11T07:24:52+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/re.leffer.de\/en\/product\/hydraulic-retaining-clamps\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/re.leffer.de\/en\/product\/hydraulic-retaining-clamps\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/re.leffer.de\/en\/product\/hydraulic-retaining-clamps\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\/\/re.leffer.de\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hydraulic retaining clamps\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/re.leffer.de\/#website\",\"url\":\"https:\/\/re.leffer.de\/\",\"name\":\"Leffer - Stahl- und Apparatebau\",\"description\":\"Stahl- und Apparatebau\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/re.leffer.de\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Hydraulic retaining clamps - Leffer - Stahl- und Apparatebau","robots":{"index":"noindex","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"en_US","og_type":"article","og_title":"Hydraulic retaining clamps - Leffer - Stahl- und Apparatebau","og_description":"Retaining clamps are used in the rotary drilling process to prevent the drill string from slipping when the casing is pulled after uncoupling from the adapter. The hydraulic retaining clamp SPA can be supplied via a carrier unit or via a separate hydraulic power pack powered electrically (E-PP 5\/5) or by diesel (PP 10\/6). 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