{"id":11836,"date":"2026-06-26T09:02:23","date_gmt":"2026-06-26T09:02:23","guid":{"rendered":"https:\/\/www.kscranegroup.com\/?post_type=posts&#038;p=11836"},"modified":"2026-06-26T09:02:27","modified_gmt":"2026-06-26T09:02:27","slug":"overhead-crane-brake-wheel-and-brake-disc-runout-tolerances","status":"publish","type":"posts","link":"https:\/\/www.kscranegroup.com\/sv\/posts\/overhead-crane-brake-wheel-and-brake-disc-runout-tolerances\/","title":{"rendered":"Toleranser f\u00f6r kast p\u00e5 bromshjul och bromsskivor f\u00f6r traverskranar \u2014 En komplett guide efter krantyp"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Inneh\u00e5llsf\u00f6rteckning<\/p><nav><ul><li><a href=\"#1-general-gantry-and-overhead-crane-brake-wheel-and-brake-disc\">1. Bromshjul och bromsskiva f\u00f6r portal- och traverskranar<\/a><\/li><li><a href=\"#2-portal-cranes-brake-wheel-and-brake-disc\">2. Portalkranar Bromshjul och bromsskiva<\/a><\/li><li><a href=\"#3-ship-to-shore-sts-container-cranes-brake-wheel-and-brake-disc\">3. Bromshjul och bromsskiva f\u00f6r containerkranar fr\u00e5n fartyg till land (STS)<\/a><\/li><li><a href=\"#4-container-gantry-cranes-rail-mounted-and-rubber-tyred-brake-wheel-and-brake-disc\">4. Containerportalkranar (skenmonterade och gummihjulsdrivna) Bromshjul och bromsskiva<\/a><\/li><li><a href=\"#5-brake-shoe-to-wheel-and-shoe-to-disc-clearance\">5. Bromsbackspel till hjul och mellan bromsback och skiva<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Bromsarnas tillf\u00f6rlitlighet p\u00e5 traverskranar \u00e4r en direkt avg\u00f6rande faktor f\u00f6r driftss\u00e4kerheten. N\u00e4r ett bromshjul eller en bromsskiva p\u00e5 en traverskran installeras med ett kast utanf\u00f6r toleransen \u00e4r resultaten f\u00f6ruts\u00e4gbara: oj\u00e4mnt bromsbel\u00e4ggslitage, minskat bromsmoment och i allvarliga fall bromsfel under ett lyft.<\/p>\n\n\n\n<p>Denna guide sammanst\u00e4ller den till\u00e5tna radiella cirkul\u00e4ra kastl\u00e4ngden f\u00f6r bromshjul och ytkastl\u00e4ngden f\u00f6r bromsskivor f\u00f6r de viktigaste industrikranstyperna. V\u00e4rdena \u00e4r h\u00e4mtade fr\u00e5n tv\u00e5 k\u00e4llor: de typspecifika best\u00e4mmelserna i Kinas GB\/T-kranstandarder och de allm\u00e4nna toleransgraderna i GB\/T 1184-1996 (Geometrisk tolerans \u2013 Allm\u00e4nna toleranser f\u00f6r form och position).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-general-gantry-and-overhead-crane-brake-wheel-and-brake-disc\">1. Bromshjul och bromsskiva f\u00f6r portal- och traverskranar<\/h2>\n\n\n\n<p>Enligt GB\/T 14405-2011 (Allm\u00e4nt <a href=\"https:\/\/www.kscranegroup.com\/sv\/full-form-eot-crane\/\">brokranar<\/a>) och GB\/T 14406-2011 (Allm\u00e4nna portalkranar), Klausul 5.8.1 \u2014 Montering av bromshjul och bromsskivor.<\/p>\n\n\n\n<p><strong>Tabell 1 \u2014 Bromshjulets radiella cirkul\u00e4ra utkast f\u00f6r allm\u00e4nna bro- och portalkranar (k\u00e4lla: GB\/T 14405-2011, GB\/T 14406-2011)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1639\" height=\"255\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-crane-Brake-wheel-radial-circular-runout.png\" alt=\"\" class=\"wp-image-11830\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-crane-Brake-wheel-radial-circular-runout.png 1639w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-crane-Brake-wheel-radial-circular-runout-1536x239.png 1536w\" sizes=\"(max-width: 1639px) 100vw, 1639px\" \/><\/figure>\n\n\n\n<p><strong>Tabell 2 \u2014 Bromsskivornas rundg\u00e5ng f\u00f6r allm\u00e4nna bro- och portalkranar (k\u00e4lla: GB\/T 14405-2011, GB\/T 14406-2011)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2125\" height=\"382\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/2-Brake-disc-face-runout-for-general-bridge-and-gantry-cranes.png\" alt=\"\" class=\"wp-image-11831\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/2-Brake-disc-face-runout-for-general-bridge-and-gantry-cranes.png 2125w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/2-Brake-disc-face-runout-for-general-bridge-and-gantry-cranes-1536x276.png 1536w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/2-Brake-disc-face-runout-for-general-bridge-and-gantry-cranes-2048x368.png 2048w\" sizes=\"(max-width: 2125px) 100vw, 2125px\" \/><\/figure>\n\n\n\n<p><strong>Viktiga anteckningar:<\/strong><\/p>\n\n\n\n<ul>\n<li><strong>Radiell cirkul\u00e4r utkastning<\/strong> \u00e4r en sammansatt form- och positionstolerans. Den m\u00e4ter den maximala variationen av punkter p\u00e5 ett givet tv\u00e4rsnitt fr\u00e5n referensaxeln. Toleranszonen \u00e4r ett par koncentriska cirklar vinkelr\u00e4ta mot referensaxeln. Denna enda m\u00e4tning f\u00e5ngar samtidigt koaxialitetsfelet (axelf\u00f6rskjutning, lutning eller b\u00f6jning) och tv\u00e4rsnittsrundhetsfelet.<\/li>\n\n\n\n<li>1 mm = 1000 \u03bcm (t.ex. 500 \u03bcm = 0,5 mm).<\/li>\n\n\n\n<li>GB\/T 27997-2011 (Portalkranar f\u00f6r skeppsbyggnad) och GB\/T 26470-2025 (Brobyggnadsmaskiner \u2014 Allm\u00e4nna tekniska f\u00f6rh\u00e5llanden) h\u00e4nvisar till samma rundg\u00e5ngstabeller ovan.<\/li>\n<\/ul>\n\n\n\n<p><strong>Figur 1 \u2014 Exempel p\u00e5 cirkul\u00e4r toleransmarkering f\u00f6r rundkast p\u00e5 en ritning (k\u00e4lla: GB\/T 1182-2018)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"397\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/3Example-of-circular-runout-tolerance-marking-on-a-drawing.png\" alt=\"\" class=\"wp-image-11832\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-portal-cranes-brake-wheel-and-brake-disc\">2. Portalkranar Bromshjul och bromsskiva<\/h2>\n\n\n\n<p>Enligt GB\/T 29560-2013 (Portalkranar), klausul 5.9.1 \u2014 Montering av bromshjul och bromsskivor. GB\/T 29561-2013 (Fasta hamnkranar) h\u00e4nvisar till samma krav.<\/p>\n\n\n\n<p><strong>Tabell 3 \u2014 Bromshjulets radiella cirkul\u00e4rkast f\u00f6r portalkranar (i mm, k\u00e4lla: GB\/T 29560-2013)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1640\" height=\"258\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/4Brake-wheel-radial-circular-runout-for-portal-cranes.png\" alt=\"\" class=\"wp-image-11833\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/4Brake-wheel-radial-circular-runout-for-portal-cranes.png 1640w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/4Brake-wheel-radial-circular-runout-for-portal-cranes-1536x242.png 1536w\" sizes=\"(max-width: 1640px) 100vw, 1640px\" \/><\/figure>\n\n\n\n<p><strong>Tabell 4 \u2014 Bromsskivornas rundg\u00e5ng f\u00f6r portalkranar (i mm, k\u00e4lla: GB\/T 29560-2013)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2172\" height=\"310\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/5Brake-disc-face-runout-for-portal-cranes.png\" alt=\"\" class=\"wp-image-11834\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/5Brake-disc-face-runout-for-portal-cranes.png 2172w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/5Brake-disc-face-runout-for-portal-cranes-1536x219.png 1536w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/5Brake-disc-face-runout-for-portal-cranes-2048x292.png 2048w\" sizes=\"(max-width: 2172px) 100vw, 2172px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-ship-to-shore-sts-container-cranes-brake-wheel-and-brake-disc\">3. Bromshjul och bromsskiva f\u00f6r containerkranar fr\u00e5n fartyg till land (STS)<\/h2>\n\n\n\n<p>Enligt GB\/T 15361-2009 (Kajcontainerkranar), Klausul 3.6.2 \u2014 Bromshjul (eller bromsskivor) och bromsar:<\/p>\n\n\n\n<ol>\n<li>F\u00f6r bromshjul monterade direkt p\u00e5 en axel: radiellt cirkul\u00e4rt rundkast och plankast f\u00e5r inte vara l\u00e4gre \u00e4n <strong>\u00c5rskurs 9 och \u00e5rskurs 10<\/strong>, respektive, enligt specifikationerna i GB\/T 1184. Se tabell 5.<\/li>\n\n\n\n<li>F\u00f6r skivbromsskivor monterade direkt p\u00e5 en axel: bromsytans rundg\u00e5ng i f\u00f6rh\u00e5llande till axeln ska <strong>inte \u00f6verstiga 0,2 mm<\/strong>.<\/li>\n\n\n\n<li>Efter montering ska alla bromsl\u00e4nkarnas vridpunkter rotera fritt. Kontaktytan mellan bromsbel\u00e4gget (eller bromsbacken) och bromshjulet (eller bromsskivan) ska vara <strong>inte mindre \u00e4n 70% av den totala friktionsytan<\/strong>.<\/li>\n<\/ol>\n\n\n\n<p><strong>Tabell 5 \u2014 Toleransgrader f\u00f6r cirkul\u00e4r kast och ytkast (k\u00e4lla: GB\/T 1184-1996)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1543\" height=\"1019\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/6Circular-runout-and-face-runout-tolerance-grades.png\" alt=\"\" class=\"wp-image-11835\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/6Circular-runout-and-face-runout-tolerance-grades.png 1543w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/6Circular-runout-and-face-runout-tolerance-grades-1536x1014.png 1536w\" sizes=\"(max-width: 1543px) 100vw, 1543px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Notera:<\/strong> Vissa utg\u00e5vor av standardreferenstexten citerar &quot;GB\/T 1182&quot; som k\u00e4lla f\u00f6r toleransgrader. Detta verkar vara ett redaktionellt fel. GB\/T 1182-2018 t\u00e4cker geometrisk toleranssymbologi och indikation \u2013 den inneh\u00e5ller inte numeriska v\u00e4rden f\u00f6r toleransgrader. Den korrekta referensen f\u00f6r toleransgrader \u00e4r GB\/T 1184-1996. GB\/T 1182-2008 och GB\/T 1182-1996 inkluderade inte heller tabeller \u00f6ver toleransgrader.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-container-gantry-cranes-rail-mounted-and-rubber-tyred-brake-wheel-and-brake-disc\">4. Containerportalkranar (skenmonterade och gummihjulsdrivna) Bromshjul och bromsskiva<\/h2>\n\n\n\n<p>Enligt GB\/T 19683-2025 (Sp\u00e5rmonterade containerportalkranar), klausul 5.6.5, och GB\/T 14783-2009 (Containerportalkranar med gummihjul), klausul 3.6.2 \u2014 Bromsar och bromshjul (skivor):<\/p>\n\n\n\n<ol>\n<li>F\u00f6r bromsskivor monterade direkt p\u00e5 en axel: den axiella kastl\u00e4ngden i f\u00f6rh\u00e5llande till axeln ska <strong>inte \u00f6verstiga 0,2 mm<\/strong>.<\/li>\n\n\n\n<li>F\u00f6r bromshjul (eller skivor): den radiella cirkul\u00e4ra rundkastningen i f\u00f6rh\u00e5llande till utg\u00e5ngsaxeln f\u00e5r inte vara l\u00e4gre \u00e4n <strong>\u00c5rskurs 7<\/strong> enligt GB\/T 1184-1996. Se tabell 5.<\/li>\n\n\n\n<li>F\u00f6r bromshjul monterade direkt p\u00e5 en axel: den radiella cirkul\u00e4ra rundkastningen f\u00e5r inte vara l\u00e4gre \u00e4n <strong>\u00c5rskurs 9<\/strong> enligt GB\/T 1184-1996. Se tabell 5.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-brake-shoe-to-wheel-and-shoe-to-disc-clearance\">5. Bromsbackspel till hjul och mellan bromsback och skiva<\/h2>\n\n\n\n<p>De rekommenderade avst\u00e5ndsv\u00e4rdena mellan bromsbackar och bromshjul \u00e4r sammanst\u00e4llda fr\u00e5n JB\/T 6406, JB\/T 7019, JB\/T 7020, JB\/T 7685 och dokumentation fr\u00e5n tillverkare av industriella bromsar. Anv\u00e4nd som f\u00e4ltreferens:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Bromshjulets diameter (mm)<\/th><th>100<\/th><th>200<\/th><th>300<\/th><th>400, 500<\/th><th>&gt;500<\/th><\/tr><\/thead><tbody><tr><td>Frig\u00e5ng (mm)<\/td><td>0,2\u20130,4<\/td><td>0,3\u20130,5<\/td><td>0,4\u20130,7<\/td><td>0,6\u20130,9<\/td><td>0,9\u20131,1<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Bromsbackens spel mellan bromsskivor och bromsbel\u00e4gg p\u00e5 ena sidan: <strong>0,6\u20131,1 mm<\/strong>.<\/figcaption><\/figure>\n\n\n\n<p>F\u00f6r s\u00e4kerhetsbromsar med vinkelkompensation: det nominella enkelsidiga inf\u00e4llningsspelet f\u00e5r inte vara mindre \u00e4n <strong>1 mm<\/strong>F\u00f6r andra s\u00e4kerhetsbromsar: det nominella enkelsidiga inf\u00e4llningsspelet f\u00e5r inte vara mindre \u00e4n <strong>2 mm<\/strong>.<\/p>\n\n\n\n<p><strong>Refererade standarder (<a href=\"https:\/\/openstd.samr.gov.cn\/bzgk\/std\/std_list?p.p1=0&amp;p.p90=circulation_date&amp;p.p91=desc&amp;p.p2=%E8%B5%B7%E9%87%8D%E6%9C%BA\" target=\"_blank\" rel=\"noopener\">Fr\u00e5ga om kinesiska kranstandarder<\/a>):<\/strong><\/p>\n\n\n\n<ul>\n<li>GB\/T 14405-2011 Allm\u00e4nna brokranar<\/li>\n\n\n\n<li>GB\/T 14406-2011 Allm\u00e4nna portalkranar<\/li>\n\n\n\n<li>GB\/T 29560-2013 Portalkranar<\/li>\n\n\n\n<li>GB\/T 15361-2009 Kajkranar f\u00f6r container<\/li>\n\n\n\n<li>GB\/T 19683-2025 Skenmonterade containerportalkranar<\/li>\n\n\n\n<li>GB\/T 14783-2009 Gummid\u00e4ckade containerportalkranar<\/li>\n\n\n\n<li>GB\/T 27997-2011 Portalkranar f\u00f6r skeppsbyggnad<\/li>\n\n\n\n<li>GB\/T 26470-2025 Brobyggningsmaskiner \u2014 Allm\u00e4nna tekniska villkor<\/li>\n\n\n\n<li>GB\/T 1184-1996 Geometrisk tolerans \u2014 Allm\u00e4nna toleranser f\u00f6r form och position<\/li>\n\n\n\n<li>GB\/T 1182-2018 Geometrisk tolerans \u2014 Tolerans f\u00f6r form, orientering, placering och kast<\/li>\n\n\n\n<li>JB\/T 6406-2006 Elektrohydrauliska hjulbromsar<\/li>\n\n\n\n<li>JB\/T 7019-2013 Industriella bromsar \u2014 Bromshjul och bromsskivor<\/li>\n\n\n\n<li>JB\/T 7020-2006 Elektrohydrauliska skivbromsar<\/li>\n\n\n\n<li>JB\/T 7685-2006 Elektromagnetiska hjulbromsar<\/li>\n<\/ul>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"Crane brake reliability is a direct determinant of operational safety. When a brake drum or brake disc is installed with out-of-tolerance runout, the results are predictable: uneven pad wear, reduced","protected":false},"featured_media":9980,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[189],"posts_tag":[791,796,794,789,793,118,792,795,121,88],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kscranegroup.com\/sv\/wp-json\/wp\/v2\/xmxposts\/11836"}],"collection":[{"href":"https:\/\/www.kscranegroup.com\/sv\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.kscranegroup.com\/sv\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":2,"href":"https:\/\/www.kscranegroup.com\/sv\/wp-json\/wp\/v2\/xmxposts\/11836\/revisions"}],"predecessor-version":[{"id":11838,"href":"https:\/\/www.kscranegroup.com\/sv\/wp-json\/wp\/v2\/xmxposts\/11836\/revisions\/11838"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/sv\/wp-json\/wp\/v2\/media\/9980"}],"wp:attachment":[{"href":"https:\/\/www.kscranegroup.com\/sv\/wp-json\/wp\/v2\/media?parent=11836"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/sv\/wp-json\/wp\/v2\/posts_category?post=11836"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/sv\/wp-json\/wp\/v2\/posts_tag?post=11836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}