{"id":1776,"date":"2025-09-23T15:56:50","date_gmt":"2025-09-23T06:56:50","guid":{"rendered":"https:\/\/www.sungilfa.co.kr\/?page_id=1776"},"modified":"2026-01-30T17:05:43","modified_gmt":"2026-01-30T08:05:43","slug":"sk1","status":"publish","type":"page","link":"https:\/\/www.sungilfa.co.kr\/en\/products\/coupling\/sk\/sk1\/","title":{"rendered":"Radial offset"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background fusion-parallax-none subtop prosubtop nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:70px;--awb-padding-bottom:30px;--awb-margin-bottom:0px;--awb-min-height:370px;--awb-background-image:url(&quot;http:\/\/www.sungilfa.co.kr\/wp-content\/uploads\/2025\/11\/coupling_bg.jpg&quot;);--awb-background-size:cover;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1497.6px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><div class=\"subtoptitle\">\n<h3>Shaft Coupling<\/h3>\n<div class=\"subbgline\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2025\/11\/Line-3.png\"><\/div>\n<p>Coupling is a core component that transmits power and motion<br \/>\nfrom the driving shaft to the driven part while absorbing misalignment<br \/>\nand any possible factors that could reduce efficiency of machines<br \/>\n(e.g. vibration, noise, electric current, etc.)\n<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:40px;--awb-padding-bottom:70px;--awb-margin-bottom:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1497.6px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 awb-sticky awb-sticky-small awb-sticky-medium awb-sticky-large fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-2\"><div class=\"pro_top\">\n<ul>\n<li><a href=\"\/en\/products\/coupling\/why-couplings\">Why Couplings?<\/a><\/li>\n<li><a href=\"\/en\/products\/coupling\/installation-guide\">Installation Guide<\/a><\/li>\n<li><a href=\"\/en\/products\/coupling\/selection-guide\">Selection Guide<\/a><\/li>\n<li><a href=\"\/en\/products\/coupling\/customer-friendly-services\">Customer-friendly Services<\/a><\/li>\n<li><a href=\"\/en\/products\/coupling\/made-to-order-process\">Made-To-Order Process<\/a><\/li>\n<li><a href=\"\/en\/products\/coupling\/varieties-for-special-environments\">Varieties for Special Environments<\/a><\/li>\n<li><a href=\"\/en\/products\/coupling\/balancing-correction\">Balancing Correction<\/a><\/li>\n<li><a href=\"\/en\/technical-data\/engineering-change-notice\/\">Engineering Change Notice<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 awb-sticky awb-sticky-small awb-sticky-medium awb-sticky-large fusion_builder_column_1_4 1_4 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:25%;--awb-margin-top-large:0px;--awb-spacing-right-large:7.68%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:7.68%;--awb-width-medium:25%;--awb-order-medium:0;--awb-spacing-right-medium:7.68%;--awb-spacing-left-medium:7.68%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;--awb-sticky-offset:200px;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-widget-area awb-widget-area-element fusion-widget-area-1 fusion-content-widget-area\" style=\"--awb-title-color:#000000;--awb-padding:0px 0px 0px 0px;\"><style type=\"text\/css\" data-id=\"avada-vertical-menu-widget-5\">#avada-vertical-menu-widget-5 > ul.menu { margin-top: -8px; }<\/style><div id=\"avada-vertical-menu-widget-5\" class=\"widget 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class=\"link-text\"> Go back to [Main Products]<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/nav><\/div><div class=\"fusion-additional-widget-content\"><\/div><\/div><div class=\"custom-select\">\n  <select onchange=\"window.open(value,'_self');\">\n    <option value=\"0\">SK Series <span class=\"desc\">(Schmidt)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/\">Shaft Coupling <span class=\"desc\">(Index)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/shr\">SHR Series <span class=\"desc\">(High Performance Rubber)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/sd\">SD Series <span class=\"desc\">(Disk)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/sad\">SAD Series <span class=\"desc\">(Advanced Disk)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/shd\">SHD Series <span class=\"desc\">(High Torque Disk)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/scd\">SCD Series <span class=\"desc\">(Concentricity Disk)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/sjc\">SJC Series <span class=\"desc\">(Jaw)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/soh\">SOH Series <span class=\"desc\">(Oldham)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/srb\">SRB Series <span class=\"desc\">(Radial Beam)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/srg\">SRG Series <span class=\"desc\">(Rigid)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/scj\">SCJ Series <span class=\"desc\">(Cross Joint)<\/span><\/option>\n    <option value=\"\/en\/products\/coupling\/sfc\">SFC Series <span class=\"desc\">(Urethane Flexible)<\/span><\/option>\n  <option value=\"\/en\/products\/coupling\/sk\">SK Series <span class=\"desc\">(Schmidt)<\/span><\/option>\n <option value=\"\/en\/products\">Go back to [Main Products]<\/option>\n  <\/select>\n<\/div>\n<\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 awb-sticky awb-sticky-small awb-sticky-medium awb-sticky-large fusion_builder_column_3_4 3_4 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:75%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.56%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2.56%;--awb-width-medium:75%;--awb-order-medium:0;--awb-spacing-right-medium:2.56%;--awb-spacing-left-medium:2.56%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-3\"><div class=\"subtitle proseriestitle\">\n<h3>SK Series <\/h3>\n<\/div>\n<\/div><div class=\"fusion-text fusion-text-4\"><div class=\"bootitle\">\n<h4>Schmidt-Kupplung Coupling <span class=\"titlemark\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2025\/09\/RoHS-reach.jpg\" \/><\/span><\/h4>\n<\/div>\n<\/div><div class=\"fusion-text fusion-text-5\"><ul class=\"tab_wrap2 tab3long\">\n<li class=\"on\"><a href=\"\/en\/products\/coupling\/sk\/\">Product Overview<\/a><\/li>\n<li>\n<p class=\"notabllink\">Dimensions \/ Performance \/ CAD<\/p>\n<div class=\"subsublink subsublink3\"><a class=\"on\" href=\"\/en\/products\/coupling\/sk\/sk1\">Radial offset<\/a><a href=\"\/en\/products\/coupling\/sk\/sk2\">Selection sequence<\/a><a href=\"\/en\/products\/coupling\/sk\/sk3\">Dimensions \/ Performance \/ CAD<\/a><\/div>\n<\/li>\n<\/ul>\n<\/div><div class=\"fusion-text fusion-text-6\"><div class=\"toplinetxt notoplinetxt\">\n<h5>Radial offset<\/h5>\n<div class=\"greybox greyboxblue\">The Schmidt-Kupplung coupling can be radially offset within the relevant pivoting range. Please note the limits specified in the tables of values for maximum allowable offset, maximum displacement and minimum required offset. Compliance with these values ensures that the shafts of the coupling do not run in an inadmissible alignment or in extended position.<\/div>\n<\/div>\n<\/div><div class=\"fusion-separator fusion-full-width-sep spacebar\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:15px;margin-bottom:15px;width:100%;\"><\/div><div class=\"fusion-text fusion-text-7\"><div class=\"toplinetxt blackbarbox\">\n<h6>Minimal Radial Offset \u25b3K<sub>r min<\/sub><\/h6>\n<p>The coupling may not operate in alignment position K<sub>r<\/sub>=0. In alignment position, the center disc would have no definite position in space but would be stimulated to its own movement. Therefore, a minimal required radial offset \u25b3K<sub>r min<\/sub> must be provided for both shafts to be connected. To this end, the output shaft must be moved horizontally (Figure 1) or vertically to achieve this minimum offset.<\/p>\n<p>The figure below illustrates the installation position of the coupling when selecting \u25b3K<sub>r min<\/sub> in the lateral, horizontal direction. The center disc can be located above (Figure 2a) or below (Figure 2b).<\/p>\n<p>For the relevant value of the minimum required radial offset \u25b3K<sub>r min<\/sub> for a coupling size, please refer to the technical data.<\/p>\n<\/div>\n<\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-0 fusion_builder_column_inner_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-8\"><div class=\"pronormalimg\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2025\/09\/coupling-p10-2_img01.jpg\" \/><\/div>\n<div class=\"greyfig\">\n<dl>\n<dt>Figure 1.<\/dt>\n<dd>Output shaft moved in the lateral, horizontal direction to achieve the minimum required radial offset<\/dd>\n<\/dl>\n<\/div>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-1 fusion_builder_column_inner_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-9\"><div class=\"pronormalimg\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2025\/09\/coupling-p10-2_img2.jpg\" \/><\/div>\n<div class=\"greyfig\">\n<dl>\n<dt>Figure 2.<\/dt>\n<dd>Alternative location of the center disc when selecting \u25b3K<sub>r min<\/sub> in horizontal direction<\/dd>\n<\/dl>\n<\/div>\n<\/div><\/div><\/div><\/div><div class=\"fusion-separator fusion-full-width-sep spacebar\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:15px;margin-bottom:15px;width:100%;\"><\/div><div class=\"fusion-text fusion-text-10\"><div class=\"toplinetxt blackbarbox\">\n<h6>Maximum Radial Offset \u25b3K<sub>r<\/sub><\/h6>\n<p>The Schmidt-Kupplung coupling is a compactly built coupling for precise torque transmission of extremely radially offset shafts. The height of the maximum permissible radial displacement is dependent on the length\/depth gauge of the coupling elements used for the relevant coupling size.<\/p>\n<p>The maximum permissible radial offset results from the sum \u25b3K<sub>r min<\/sub> and the adjustment range (Figure 3).  For the relevant value of the maximum permissible radial offset \u25b3K<sub>r<\/sub> for a coupling size, please refer to the technical data.<\/p>\n<p>Figure 4 shows the path of the centre disc of the Schmidt-Kupplung coupling with adjusting movements starting at \u25b3K<sub>r min<\/sub> to \u25b3K<sub>r<\/sub>. Here, the center disc moves on a circular portion defined by the length\/pitches of the coupling elements and thus always has a definite position.<\/p>\n<p>To determine the exact position of the center disc for required installation space our application engineers will be pleased to assist you.<\/p>\n<\/div>\n<\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-2 fusion_builder_column_inner_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-11\"><div class=\"pronormalimg\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2025\/09\/coupling-p10-2_img3.jpg\" \/><\/div>\n<div class=\"greyfig\">\n<dl>\n<dt>Figure 3.<\/dt>\n<dd>Maximum Radial Offset<\/dd>\n<\/dl>\n<\/div>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-3 fusion_builder_column_inner_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-12\"><div class=\"pronormalimg\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2025\/09\/coupling-p10-2_img4.jpg\" \/><\/div>\n<div class=\"greyfig\">\n<dl>\n<dt>Figure 2.<\/dt>\n<dd>Path of the center disc with adjusting movements starting at \u25b3K<sub>r min<\/sub>  to \u25b3K<sub>r<\/sub><\/dd>\n<\/dl>\n<\/div>\n<\/div><\/div><\/div><\/div><div class=\"fusion-separator fusion-full-width-sep spacebar\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:25px;margin-bottom:25px;width:100%;\"><\/div><div class=\"fusion-text fusion-text-13\"><div class=\"toplinetxt blackbarbox\">\n<h6>Maximum Linear Range of Coupling \u25b3K<sub>v<\/sub><\/h6>\n<div class=\"pronormalimg\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2025\/09\/coupling-p10-2_img5.jpg\"><\/div>\n<\/div>\n<\/div><div class=\"fusion-separator fusion-full-width-sep spacebar\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:25px;margin-bottom:25px;width:100%;\"><\/div><div class=\"fusion-text fusion-text-14\"><div class=\"toplinetxt blackbarbox\">\n<h6>Two installation situations are not permitted<\/h6>\n<div class=\"numli\">\n<ol>\n<li><strong>Inadmissible alignment<\/strong><br \/>\n\t\t\t\t\t\t\t\t\tThe coupling may not operate in alignment position K<sub>r<\/sub>=0 (recognizable in that the coupling elements of link level 1 are parallel to the coupling elements in level 2). In alignment position, the center disc would have no definite position in space but would be stimulated to its own movement. For this reason, the aforementioned minimum required radial offset must be provided for every Schmidt-Kupplung coupling.\n\t\t\t\t\t\t\t\t<\/li>\n<li><strong>Inadmissible extended position<\/strong><br \/>\n\t\t\t\t\t\t\t\t\tThe coupling may not operate in extended position (recognizable in that the coupling elements of link level 1 are parallel to the coupling elements in level 2).\n\t\t\t\t\t\t\t\t<\/li>\n<\/ol>\n<\/div>\n<div class=\"pronormalimg\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2025\/09\/coupling-p10-2_img6.jpg\"><\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"parent":968,"menu_order":12,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-1776","page","type-page","status-publish","hentry"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.sungilfa.co.kr\/en\/wp-json\/wp\/v2\/pages\/1776","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sungilfa.co.kr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.sungilfa.co.kr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.sungilfa.co.kr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sungilfa.co.kr\/en\/wp-json\/wp\/v2\/comments?post=1776"}],"version-history":[{"count":11,"href":"https:\/\/www.sungilfa.co.kr\/en\/wp-json\/wp\/v2\/pages\/1776\/revisions"}],"predecessor-version":[{"id":9563,"href":"https:\/\/www.sungilfa.co.kr\/en\/wp-json\/wp\/v2\/pages\/1776\/revisions\/9563"}],"up":[{"embeddable":true,"href":"https:\/\/www.sungilfa.co.kr\/en\/wp-json\/wp\/v2\/pages\/968"}],"wp:attachment":[{"href":"https:\/\/www.sungilfa.co.kr\/en\/wp-json\/wp\/v2\/media?parent=1776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}