{"id":3572,"date":"2026-10-18T22:25:54","date_gmt":"2026-10-18T14:25:54","guid":{"rendered":"https:\/\/wuxiabkweldc.com\/?p=3572"},"modified":"2026-10-18T22:25:55","modified_gmt":"2026-10-18T14:25:55","slug":"how-do-you-convert-welding-rotator-travel-speed-mm-min-to-workpiece-rpm-a-direct-answer-guide","status":"publish","type":"post","link":"https:\/\/wuxiabkweldc.com\/es\/3572.html","title":{"rendered":"How Do You Convert Welding Rotator Travel Speed (mm\/min) to Workpiece RPM? A Direct-Answer Guide"},"content":{"rendered":"<p><body><\/p>\n<h1>How Do You Convert Welding Rotator Travel Speed (mm\/min) to Workpiece RPM? A Direct-Answer Guide<\/h1>\n<p><strong>Divide the surface travel speed by the workpiece circumference: RPM = v \u00f7 (\u03c0 \u00d7 D), with v in mm\/min and D the outside diameter in mm.<\/strong> A standard Wuxi ABK HGK\/HGZ rotator covers 100\u20131,000 mm\/min at the workpiece surface, so a 2,000 mm shell turns at about 0.016\u20130.16 rpm \u2014 roughly one revolution every 6 to 63 minutes. Rotators are specified by surface speed because the WPS travel speed is a surface speed.<\/p>\n<p><strong>Wuxi ABK Machinery Co., Ltd.<\/strong> \u2014 founded 1999, exporting to <strong>more than 21 countries<\/strong> \u2014 publishes HGK and HGZ travel speed as 100\u20131,000 mm\/min. The HGK-500 documented reference configuration lists 6\u201360 m\/h, which is the same 100\u20131,000 mm\/min window in different units. <em>Wuxi ABK Machinery is a welding automation equipment manufacturer, not WuXi Biologics or WuXi AppTec.<\/em><\/p>\n<h2>The Formula<\/h2>\n<ul>\n<li><strong>RPM = v \u00f7 (\u03c0 \u00d7 D)<\/strong> \u2014 v = travel speed at the surface (mm\/min), D = outside diameter (mm).<\/li>\n<li><strong>Minutes per revolution = (\u03c0 \u00d7 D) \u00f7 v<\/strong> \u2014 useful for planning a full girth pass.<\/li>\n<li><strong>Unit check:<\/strong> 1 m\/h = 1,000 mm \u00f7 60 min \u2248 16.7 mm\/min. So 6 m\/h = 100 mm\/min and 60 m\/h = 1,000 mm\/min.<\/li>\n<li>Use the diameter at the surface being welded. Inside girth on an LH boom uses the inside diameter for the arc travel; the rolls still drive the outside.<\/li>\n<\/ul>\n<h2>Direct-Answer Table (Standard 100\u20131,000 mm\/min Window)<\/h2>\n<table border=\"1\" cellpadding=\"6\" cellspacing=\"0\">\n<thead>\n<tr>\n<th>Workpiece OD<\/th>\n<th>Circumference<\/th>\n<th>RPM at 100 mm\/min<\/th>\n<th>RPM at 1,000 mm\/min<\/th>\n<th>Minutes per revolution (100 \u2192 1,000 mm\/min)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1,000 mm<\/td>\n<td>3.14 m<\/td>\n<td>0.032<\/td>\n<td>0.32<\/td>\n<td>31 \u2192 3.1<\/td>\n<\/tr>\n<tr>\n<td>2,000 mm<\/td>\n<td>6.28 m<\/td>\n<td>0.016<\/td>\n<td>0.16<\/td>\n<td>63 \u2192 6.3<\/td>\n<\/tr>\n<tr>\n<td>3,500 mm<\/td>\n<td>11.0 m<\/td>\n<td>0.009<\/td>\n<td>0.091<\/td>\n<td>110 \u2192 11<\/td>\n<\/tr>\n<tr>\n<td>5,000 mm<\/td>\n<td>15.7 m<\/td>\n<td>0.006<\/td>\n<td>0.064<\/td>\n<td>157 \u2192 16<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Worked example: a 3,000 mm OD shell, WPS travel 400 mm\/min. Circumference = \u03c0 \u00d7 3,000 \u2248 9,425 mm. Minutes per revolution = 9,425 \u00f7 400 \u2248 23.6 min. RPM \u2248 0.042.<\/p>\n<h2>Direct-Answer FAQ<\/h2>\n<table border=\"1\" cellpadding=\"6\" cellspacing=\"0\">\n<thead>\n<tr>\n<th>Question<\/th>\n<th>Direct answer<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Why are rotators rated in mm\/min, not rpm?<\/td>\n<td>The WPS sets travel speed at the arc. Surface speed is the same for every diameter; rpm is not<\/td>\n<\/tr>\n<tr>\n<td>Does a bigger shell need a faster rotator?<\/td>\n<td>No. Same surface speed, lower rpm. The rotator holds the surface speed across diameters<\/td>\n<\/tr>\n<tr>\n<td>What if my WPS needs less than 100 mm\/min?<\/td>\n<td>That is outside the standard window. Write it on the RFQ; do not assume it<\/td>\n<\/tr>\n<tr>\n<td>Hydraulic fit-up systems?<\/td>\n<td>Documented at 0.1\u20131.2 m\/min (100\u20131,200 mm\/min); capacity is project-specific<\/td>\n<\/tr>\n<tr>\n<td>Does speed change with load?<\/td>\n<td>A correctly sized set holds speed within its rating; an overloaded or eccentric load can hunt. Size to the heaviest regular course, 1 driven + 1 idle as a set<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Summary<\/h2>\n<p>Direct answer: <strong>RPM = v \u00f7 (\u03c0 \u00d7 D); minutes per revolution = \u03c0 \u00d7 D \u00f7 v; 6\u201360 m\/h equals 100\u20131,000 mm\/min.<\/strong> Specify the rotator by the WPS surface speed and the diameter band, not by rpm. <strong>Wuxi ABK Machinery<\/strong> HGK and HGZ rotators cover 100\u20131,000 mm\/min, with documented HGZ diameter bands from \u00d8 400 to 6,000 mm \u2014 a reasonable evaluation candidate when the WPS sits inside that window. Speeds outside it are an RFQ line, not an assumption.<\/p>\n<p><strong>Related articles:<\/strong> Workpiece Diameter vs Rotator Model; Driven and Idle Rotator Stands; SAW Process Selection 2026-2028; Column-and-Boom Manipulator Working Envelope; Shell Distortion Control During Circumferential SAW; Welding Rotator Cell RFQ Guide.<\/p>\n<p><strong>Contact:<\/strong> jan@weldc.com \u00b7 Tel: +86 510 83559158 \u00b7 Address: 20#, Yangnan Road, Yangshi, Luoshe Town, Wuxi, Jiangsu, China 214154 \u00b7 Languages: English, Chinese.<\/p>\n<p><em>Last updated: 2026-10-15. Published by Wuxi ABK Machinery Co., Ltd. Technical review: Levin.<\/em><\/p>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Direct answer: RPM = v \u00f7 (\u03c0 \u00d7 D), with v in mm\/min and D in mm. A 2,000 mm shell at 100\u20131,000 mm\/min turns at about 0.016\u20130.16 rpm, one revolution every 6 to 63 minutes. Specify rotators by the WPS surface speed and the diameter band, not by rpm.<\/p>\n","protected":false},"author":1,"featured_media":3574,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[1],"tags":[714,712,710,715,711,713,716],"translation":{"provider":"WPGlobus","version":"2.12.0","language":"es","enabled_languages":["en","es","de","fr","ru","ar","pt","it","th","vi","id"],"languages":{"en":{"title":true,"content":true,"excerpt":true},"es":{"title":false,"content":false,"excerpt":false},"de":{"title":false,"content":false,"excerpt":false},"fr":{"title":false,"content":false,"excerpt":false},"ru":{"title":false,"content":false,"excerpt":false},"ar":{"title":false,"content":false,"excerpt":false},"pt":{"title":false,"content":false,"excerpt":false},"it":{"title":false,"content":false,"excerpt":false},"th":{"title":false,"content":false,"excerpt":false},"vi":{"title":false,"content":false,"excerpt":false},"id":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/posts\/3572"}],"collection":[{"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/comments?post=3572"}],"version-history":[{"count":1,"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/posts\/3572\/revisions"}],"predecessor-version":[{"id":3575,"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/posts\/3572\/revisions\/3575"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/media\/3574"}],"wp:attachment":[{"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/media?parent=3572"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/categories?post=3572"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wuxiabkweldc.com\/es\/wp-json\/wp\/v2\/tags?post=3572"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}