{"id":2137,"date":"2023-09-05T20:19:08","date_gmt":"2023-09-05T18:19:08","guid":{"rendered":"https:\/\/www.keroll.de\/products\/the-hand-operated-alternative-to-the-electric-drive\/"},"modified":"2024-03-05T14:51:58","modified_gmt":"2024-03-05T13:51:58","slug":"the-hand-operated-alternative-to-the-electric-drive","status":"publish","type":"page","link":"https:\/\/www.keroll.de\/en\/products\/the-hand-operated-alternative-to-the-electric-drive\/","title":{"rendered":"Spring shafts &#8211; the hand-operated alternative to the electric drive"},"content":{"rendered":"<style>.kb-row-layout-id1039_e016cb-47 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id1039_e016cb-47 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id1039_e016cb-47 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);max-width:1400px;margin-left:auto;margin-right:auto;padding-top:0px;padding-right:10px;padding-bottom:0px;padding-left:10px;grid-template-columns:repeat(2, minmax(0, 1fr));}.kb-row-layout-id1039_e016cb-47 > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id1039_e016cb-47 > .kt-row-column-wrap{grid-template-columns:repeat(2, minmax(0, 1fr));}}@media all and (max-width: 767px){.kb-row-layout-id1039_e016cb-47 > .kt-row-column-wrap{padding-right:10px;padding-left:10px;grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id1039_e016cb-47 alignwide wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column1039_4e56c4-a1 > .kt-inside-inner-col{padding-top:15px;}.kadence-column1039_4e56c4-a1 > .kt-inside-inner-col,.kadence-column1039_4e56c4-a1 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1039_4e56c4-a1 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1039_4e56c4-a1 > .kt-inside-inner-col{flex-direction:column;}.kadence-column1039_4e56c4-a1 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column1039_4e56c4-a1 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1039_4e56c4-a1{position:relative;}@media all and (max-width: 1024px){.kadence-column1039_4e56c4-a1 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column1039_4e56c4-a1 > .kt-inside-inner-col{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1039_4e56c4-a1 inner-column-1\"><div class=\"kt-inside-inner-col\">\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"466\" src=\"https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/09\/Keroll-Kerger-Federwelle-1-768x466-1.jpg\" alt=\"\" class=\"wp-image-1051\" srcset=\"https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/09\/Keroll-Kerger-Federwelle-1-768x466-1.jpg 768w, https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/09\/Keroll-Kerger-Federwelle-1-768x466-1-300x182.jpg 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n<\/div><\/div>\n\n\n<style>.kadence-column1039_874957-77 > .kt-inside-inner-col{padding-top:15px;}.kadence-column1039_874957-77 > .kt-inside-inner-col,.kadence-column1039_874957-77 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1039_874957-77 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1039_874957-77 > .kt-inside-inner-col{flex-direction:column;}.kadence-column1039_874957-77 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column1039_874957-77 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1039_874957-77{position:relative;}@media all and (max-width: 1024px){.kadence-column1039_874957-77 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column1039_874957-77 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1039_874957-77 inner-column-2\"><div class=\"kt-inside-inner-col\">\n<h1 class=\"wp-block-heading\">Spring shafts<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">The hand-operated alternative to the electric drive<\/h2>\n\n\n\n<p>Local conditions do not always allow the installation of electrically powered roller shutters. So that interested parties do not have to forego the protection of a rolling grille or rolling shutter, we at Keroll Kerger GmbH not only offer high-quality rolling shutters with electric drives, but also gates that can be opened and closed by hand using <strong>spring shafts<\/strong>.<\/p>\n\n\n\n<p>If there is no electrical connection on site or there is little space for installing a rolling gate with a drive, as is often the case with entrance doors to shops, hand-operated gates with spring shafts represent a convincing alternative. Also from an economic point of view &#8211; after all, no electricity is required to operate the gates. And since assembly is particularly quick and easy, additional costs can be saved here. When it comes to safety, manually operated roller shutters are in no way inferior to those with electric drives. A Basquille lock, which is installed at hand height or, if desired, in the end bar, protects against unauthorized lifting of the grille.<\/p>\n<\/div><\/div>\n\n<\/div><\/div><style>.kb-row-layout-id1039_8f548d-60 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id1039_8f548d-60 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id1039_8f548d-60 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id1039_8f548d-60{border-top:2px solid #aee2f7;border-right:2px solid #aee2f7;border-bottom:2px solid #aee2f7;border-left:2px solid #aee2f7;}.kb-row-layout-id1039_8f548d-60{background-color:#fbfeff;}.kb-row-layout-id1039_8f548d-60 > .kt-row-layout-overlay{opacity:0.30;}.kb-row-layout-id1039_8f548d-60 .kt-row-layout-bottom-sep{height:100px;}.kb-row-layout-id1039_8f548d-60 .kt-row-layout-bottom-sep svg{width:100%;}.kb-row-layout-id1039_8f548d-60 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){.kb-row-layout-id1039_8f548d-60 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 1024px){.kb-row-layout-id1039_8f548d-60{border-top:2px solid #aee2f7;border-right:2px solid #aee2f7;border-bottom:2px solid #aee2f7;border-left:2px solid #aee2f7;}}@media all and (max-width: 1024px){.kb-row-layout-id1039_8f548d-60 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){.kb-row-layout-id1039_8f548d-60 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){.kb-row-layout-id1039_8f548d-60 > .kt-row-column-wrap{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id1039_8f548d-60{border-top:2px solid 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1rem);}.kadence-column1039_0612bd-dd > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_0612bd-dd > .kt-inside-inner-col > .aligncenter{width:100%;}.kt-row-column-wrap > .kadence-column1039_0612bd-dd{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_0612bd-dd{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_0612bd-dd > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_0612bd-dd > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1039_0612bd-dd{position:relative;}.kadence-column1039_0612bd-dd, .kt-inside-inner-col > .kadence-column1039_0612bd-dd:not(.specificity){margin-right:0px;margin-left:0px;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column1039_0612bd-dd{align-self:flex-end;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_0612bd-dd{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_0612bd-dd > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 1024px){.kadence-column1039_0612bd-dd > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 767px){.kadence-column1039_0612bd-dd > .kt-inside-inner-col{padding-top:0px;padding-right:10px;padding-bottom:0px;padding-left:10px;flex-direction:column;justify-content:flex-end;}.kt-row-column-wrap > .kadence-column1039_0612bd-dd{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_0612bd-dd{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_0612bd-dd > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1039_0612bd-dd kb-section-dir-vertical inner-column-1\"><div class=\"kt-inside-inner-col\">\n<h2 class=\"wp-block-heading\">Benefits of keroll spring shafts at a glance:<\/h2>\n\n\n\n<p>Keroll Kerger GmbH is your specialist for rolling doors, rolling and scissor grilles. We have been manufacturing safety-relevant quality products for over 100 years, which include not only the gates and grilles themselves, but also controls and drives. For manual opening and closing of the gates, we recommend our spring shafts, which are characterized by the following excellent properties:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>simple installation<\/li>\n\n\n\n<li>robust longevity<\/li>\n\n\n\n<li>low-wear plain bearings<\/li>\n\n\n\n<li>reliable spring fastening<\/li>\n\n\n\n<li>high-quality spring band steel<\/li>\n<\/ul>\n\n\n\n<p>In addition, each spring shaft is designed exactly for the armor weight of the respective roller shutter. In this way, ideal weight balance and the associated low hand strength can be achieved. The only thing to note is that the armored weight of the gate does not exceed the limit of 100 kg in order to avoid exceeding the permissible manual forces in accordance with DIN EN 12604. For this reason, the drive using spring shafts is particularly suitable for smaller rolling grilles and roller shutters.<\/p>\n<\/div><\/div>\n\n<\/div><\/div><style>.kb-row-layout-id1039_3a1b0a-a3 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id1039_3a1b0a-a3 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id1039_3a1b0a-a3 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-lg, 3rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-lg, 3rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id1039_3a1b0a-a3 > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id1039_3a1b0a-a3 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id1039_3a1b0a-a3 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id1039_3a1b0a-a3 alignwide wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column1039_f78c10-f6 > .kt-inside-inner-col{display:flex;}.kadence-column1039_f78c10-f6 > .kt-inside-inner-col{padding-right:0px;padding-left:0px;}.kadence-column1039_f78c10-f6 > .kt-inside-inner-col,.kadence-column1039_f78c10-f6 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1039_f78c10-f6 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1039_f78c10-f6 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_f78c10-f6 > .kt-inside-inner-col > .aligncenter{width:100%;}.kt-row-column-wrap > .kadence-column1039_f78c10-f6{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_f78c10-f6{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_f78c10-f6 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_f78c10-f6 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1039_f78c10-f6{position:relative;}.kadence-column1039_f78c10-f6, .kt-inside-inner-col > .kadence-column1039_f78c10-f6:not(.specificity){margin-right:0px;margin-left:0px;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column1039_f78c10-f6{align-self:flex-end;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_f78c10-f6{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_f78c10-f6 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 1024px){.kadence-column1039_f78c10-f6 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 767px){.kadence-column1039_f78c10-f6 > .kt-inside-inner-col{padding-top:0px;padding-right:10px;padding-bottom:0px;padding-left:10px;flex-direction:column;justify-content:flex-end;}.kt-row-column-wrap > .kadence-column1039_f78c10-f6{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_f78c10-f6{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_f78c10-f6 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1039_f78c10-f6 kb-section-dir-vertical inner-column-1\"><div class=\"kt-inside-inner-col\">\n<h1 class=\"wp-block-heading\">Technical information<\/h1>\n\n\n<style>.kt-accordion-id1039_c75d50-e4 .kt-accordion-inner-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:8px;}.kt-accordion-id1039_c75d50-e4 .kt-accordion-panel-inner{padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);}.kt-accordion-id1039_c75d50-e4 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{background:#34b6ea;color:#ffffff;padding-top:var(--global-kb-spacing-md, 2rem);padding-right:var(--global-kb-spacing-xs, 1rem);padding-bottom:var(--global-kb-spacing-md, 2rem);padding-left:var(--global-kb-spacing-xs, 1rem);}.kt-accordion-id1039_c75d50-e4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1039_c75d50-e4:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:before{background:#ffffff;}.kt-accordion-id1039_c75d50-e4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger{background:#ffffff;}.kt-accordion-id1039_c75d50-e4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id1039_c75d50-e4:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:before{background:#34b6ea;}@media all and (max-width: 767px){.kt-accordion-id1039_c75d50-e4 .kt-accordion-inner-wrap{display:block;}.kt-accordion-id1039_c75d50-e4 .kt-accordion-inner-wrap .kt-accordion-pane:not(:first-child){margin-top:8px;}}<\/style>\n<div class=\"wp-block-kadence-accordion alignnone\"><div class=\"kt-accordion-wrap kt-accordion-id1039_c75d50-e4 kt-accordion-has-6-panes kt-active-pane-0 kt-accordion-block kt-pane-header-alignment-left kt-accodion-icon-style-basic kt-accodion-icon-side-right\" style=\"max-width:none\"><div class=\"kt-accordion-inner-wrap\" data-allow-multiple-open=\"false\" data-start-open=\"none\">\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-1 kt-pane1039_215e72-44\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\"><span class=\"collapseomatic colomat-close colomat-visited\" id=\"id64f73f17d66cc\" tabindex=\"0\" title=\"Construction\">Federgeh\u00e4use<\/span><\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-feder.jpg\" alt=\"\" class=\"wp-image-1637\"\/><\/figure>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-2 kt-pane1039_dcf7cd-a3\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">H\u00f6henschnitt &amp; Grundriss<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"546\" src=\"https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-hoehenschnitt.jpg\" alt=\"\" class=\"wp-image-1638\" srcset=\"https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-hoehenschnitt.jpg 1200w, https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-hoehenschnitt-300x137.jpg 300w, https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-hoehenschnitt-1024x466.jpg 1024w, https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-hoehenschnitt-768x349.jpg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-6 kt-pane1039_8f57b4-f7\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Montageanleitung<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"244\" src=\"https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-montageanleitung-1024x244.jpg\" alt=\"\" class=\"wp-image-1639\" srcset=\"https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-montageanleitung-1024x244.jpg 1024w, https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-montageanleitung-300x72.jpg 300w, https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-montageanleitung-768x183.jpg 768w, https:\/\/www.keroll.de\/wp-content\/uploads\/2023\/10\/keroll-kerger-federwellen-techn-infos-montageanleitung.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n<style>.kb-row-layout-wrap.wp-block-kadence-rowlayout.kb-row-layout-id1039_9e1d43-7c{margin-top:var(--global-kb-spacing-xs, 1rem);margin-bottom:var(--global-kb-spacing-xs, 1rem);}.kb-row-layout-id1039_9e1d43-7c > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id1039_9e1d43-7c > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id1039_9e1d43-7c > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:0px;padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:repeat(2, minmax(0, 1fr));}.kb-row-layout-id1039_9e1d43-7c > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id1039_9e1d43-7c > .kt-row-column-wrap{grid-template-columns:repeat(2, minmax(0, 1fr));}}@media all and (max-width: 767px){.kb-row-layout-id1039_9e1d43-7c > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id1039_9e1d43-7c alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{display:flex;}.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.kadence-column1039_b21aaa-15 > .kt-inside-inner-col,.kadence-column1039_b21aaa-15 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_b21aaa-15 > .kt-inside-inner-col > .aligncenter{width:100%;}.kt-row-column-wrap > .kadence-column1039_b21aaa-15{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_b21aaa-15{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{background-color:#34b6ea;}.kadence-column1039_b21aaa-15 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1039_b21aaa-15{position:relative;}.kadence-column1039_b21aaa-15, .kt-inside-inner-col > .kadence-column1039_b21aaa-15:not(.specificity){margin-right:0px;margin-left:0px;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column1039_b21aaa-15{align-self:flex-end;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_b21aaa-15{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 1024px){.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 767px){.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{padding-top:0px;padding-right:10px;padding-bottom:0px;padding-left:10px;flex-direction:column;justify-content:flex-end;}.kt-row-column-wrap > .kadence-column1039_b21aaa-15{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_b21aaa-15{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_b21aaa-15 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1039_b21aaa-15 kb-section-dir-vertical inner-column-1\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedbtn.kb-btns1039_2231f6-85{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:flex-start;align-items:center;}.kt-btns1039_2231f6-85 .kt-button{font-weight:normal;font-style:normal;}.kt-btns1039_2231f6-85 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns1039_2231f6-85 .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns1039_2231f6-85 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns1039_2231f6-85 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns1039_2231f6-85 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns1039_2231f6-85 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns1039_2231f6-85 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns1039_2231f6-85\"><style>ul.menu .wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button{width:initial;}.wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button{color:#ffffff;background:#34b6ea;border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);}.wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button:focus{color:#ffffff;background:#444;border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}@media all and (max-width: 1024px){.wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button{border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}}@media all and (max-width: 1024px){.wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button:focus{border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button{border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}.wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn1039_3e8c97-95.kb-button:focus{border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}}<\/style><a class=\"kb-button kt-button button kb-btn1039_3e8c97-95 kt-btn-size-standard kt-btn-width-type-full kb-btn-global-fill  kt-btn-has-text-true kt-btn-has-svg-false  wp-block-kadence-singlebtn\" href=\"https:\/\/www.keroll.de\/wp-content\/uploads\/2016\/09\/Federwelle-Bestellanleitung.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"kt-btn-inner-text\">Federwellen Bestellformular<\/span><\/a><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column1039_82f323-f5 > .kt-inside-inner-col{display:flex;}.kadence-column1039_82f323-f5 > .kt-inside-inner-col{padding-right:0px;padding-left:0px;}.kadence-column1039_82f323-f5 > .kt-inside-inner-col,.kadence-column1039_82f323-f5 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1039_82f323-f5 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1039_82f323-f5 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_82f323-f5 > .kt-inside-inner-col > .aligncenter{width:100%;}.kt-row-column-wrap > .kadence-column1039_82f323-f5{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_82f323-f5{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_82f323-f5 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_82f323-f5 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1039_82f323-f5{position:relative;}.kadence-column1039_82f323-f5, .kt-inside-inner-col > .kadence-column1039_82f323-f5:not(.specificity){margin-right:0px;margin-left:0px;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column1039_82f323-f5{align-self:flex-end;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_82f323-f5{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_82f323-f5 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 1024px){.kadence-column1039_82f323-f5 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 767px){.kadence-column1039_82f323-f5 > .kt-inside-inner-col{padding-top:0px;padding-right:10px;padding-bottom:0px;padding-left:10px;flex-direction:column;justify-content:flex-end;}.kt-row-column-wrap > .kadence-column1039_82f323-f5{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_82f323-f5{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_82f323-f5 > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1039_82f323-f5 kb-section-dir-vertical inner-column-1\"><div class=\"kt-inside-inner-col\"><style>.kadence-column1039_afdc79-ce > .kt-inside-inner-col{display:flex;}.kadence-column1039_afdc79-ce > .kt-inside-inner-col{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.kadence-column1039_afdc79-ce > .kt-inside-inner-col,.kadence-column1039_afdc79-ce > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1039_afdc79-ce > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1039_afdc79-ce > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_afdc79-ce > .kt-inside-inner-col > .aligncenter{width:100%;}.kt-row-column-wrap > .kadence-column1039_afdc79-ce{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_afdc79-ce{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_afdc79-ce > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}.kadence-column1039_afdc79-ce > .kt-inside-inner-col{background-color:#34b6ea;}.kadence-column1039_afdc79-ce > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1039_afdc79-ce{position:relative;}.kadence-column1039_afdc79-ce, .kt-inside-inner-col > .kadence-column1039_afdc79-ce:not(.specificity){margin-right:0px;margin-left:0px;}@media all and (max-width: 1024px){.kt-row-column-wrap > .kadence-column1039_afdc79-ce{align-self:flex-end;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_afdc79-ce{align-self:auto;}}@media all and (max-width: 1024px){.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_afdc79-ce > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 1024px){.kadence-column1039_afdc79-ce > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}@media all and (max-width: 767px){.kadence-column1039_afdc79-ce > .kt-inside-inner-col{padding-top:0px;padding-right:10px;padding-bottom:0px;padding-left:10px;flex-direction:column;justify-content:flex-end;}.kt-row-column-wrap > .kadence-column1039_afdc79-ce{align-self:flex-end;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_afdc79-ce{align-self:auto;}.kt-inner-column-height-full:not(.kt-has-1-columns) > .wp-block-kadence-column.kadence-column1039_afdc79-ce > .kt-inside-inner-col{flex-direction:column;justify-content:flex-end;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1039_afdc79-ce kb-section-dir-vertical inner-column-1\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedbtn.kb-btns1039_c22d89-b5{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:flex-start;align-items:center;}.kt-btns1039_c22d89-b5 .kt-button{font-weight:normal;font-style:normal;}.kt-btns1039_c22d89-b5 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns1039_c22d89-b5 .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns1039_c22d89-b5 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns1039_c22d89-b5 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns1039_c22d89-b5 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns1039_c22d89-b5 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns1039_c22d89-b5 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns1039_c22d89-b5\"><style>ul.menu .wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button{width:initial;}.wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button{color:#ffffff;background:#34b6ea;border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);}.wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button:focus{color:#ffffff;background:#444;border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}@media all and (max-width: 1024px){.wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button{border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}}@media all and (max-width: 1024px){.wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button:focus{border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button{border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}.wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button:hover, .wp-block-kadence-advancedbtn .kb-btn1039_c32d25-b7.kb-button:focus{border-top:0px solid;border-right:0px solid;border-bottom:0px solid;border-left:0px solid;}}<\/style><span class=\"kb-button kt-button button kb-btn1039_c32d25-b7 kt-btn-size-standard kt-btn-width-type-full kb-btn-global-fill  kt-btn-has-text-true kt-btn-has-svg-false  wp-block-kadence-singlebtn\"><span class=\"kt-btn-inner-text\">Download flyer spring shafts<\/span><\/span><\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n<\/div><\/div><style>.kb-row-layout-id1039_29af42-bc > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id1039_29af42-bc > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id1039_29af42-bc > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:34px;padding-bottom:50px;grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id1039_29af42-bc{background-color:#34b6ea;}.kb-row-layout-id1039_29af42-bc > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id1039_29af42-bc > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id1039_29af42-bc > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id1039_29af42-bc alignfull kt-row-has-bg wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column1039_7c3665-dd > .kt-inside-inner-col,.kadence-column1039_7c3665-dd > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1039_7c3665-dd > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1039_7c3665-dd > .kt-inside-inner-col{flex-direction:column;}.kadence-column1039_7c3665-dd > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column1039_7c3665-dd > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1039_7c3665-dd{position:relative;}@media all and (max-width: 1024px){.kadence-column1039_7c3665-dd > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column1039_7c3665-dd > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1039_7c3665-dd inner-column-1\"><div class=\"kt-inside-inner-col\">\n<h3 class=\"wp-block-heading has-text-align-center has-white-color has-text-color\">Would you also like to benefit from our many years of expertise <br\/>or do you perhaps have a question or two about our quality products? <\/h3>\n\n\n\n<p class=\"has-text-align-center has-white-color has-text-color\">Whether spring shafts, roller shutters or <a href=\"https:\/\/www.keroll.de\/en\/products\/folding-grilles\/\">scissor gates<\/a> for the door &#8211; we will be happy to advise you in detail about your options.arenten roller shutters?<\/p>\n\n\n\n<p class=\"has-text-align-center has-white-color has-text-color\">Get in touch with us \u2013 our team will be happy to help you at any time.<br\/>You can reach us by phone on +49 (0) 2 02 \u2013 2 46 57 0, via our contact form and by email. <\/p>\n\n\n\n<p class=\"has-text-align-center has-white-color has-text-color\">We look forward to your inquiry!<br\/><\/p>\n<\/div><\/div>\n\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Spring shafts The hand-operated alternative to the electric drive Local conditions do not always allow the installation of electrically powered roller shutters. So that interested parties do not have to forego the protection of a rolling grille or rolling shutter, we at Keroll Kerger GmbH not only offer high-quality rolling shutters with electric drives, but [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2135,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","footnotes":""},"class_list":["post-2137","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Spring shafts - the hand-operated alternative to the electric drive - Keroll Kerger GmbH<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.keroll.de\/en\/products\/the-hand-operated-alternative-to-the-electric-drive\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Spring shafts - the hand-operated alternative to the electric drive - Keroll Kerger GmbH\" \/>\n<meta property=\"og:description\" content=\"Spring shafts The hand-operated alternative to the electric drive Local conditions do not always allow the installation of electrically powered roller shutters. 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