{"id":3380,"date":"2026-09-19T02:47:22","date_gmt":"2026-09-18T18:47:22","guid":{"rendered":"http:\/\/www.moverscompanydubai.com\/blog\/?p=3380"},"modified":"2026-09-19T02:47:22","modified_gmt":"2026-09-18T18:47:22","slug":"what-is-the-capacity-of-a-shaftless-screw-conveyor-4ae0-a34892","status":"publish","type":"post","link":"http:\/\/www.moverscompanydubai.com\/blog\/2026\/09\/19\/what-is-the-capacity-of-a-shaftless-screw-conveyor-4ae0-a34892\/","title":{"rendered":"What is the capacity of a shaftless screw conveyor?"},"content":{"rendered":"<p>What is the capacity of a shaftless screw conveyor? That&#8217;s a question I get asked a lot as a supplier of screw conveyors. And it&#8217;s not a simple one to answer because there are several factors that can affect the capacity of these conveyors. In this blog post, I&#8217;m gonna break down what determines the capacity of a shaftless screw conveyor and how you can figure out what you need for your specific situation. <a href=\"https:\/\/www.wxconveyor.com\/conveyor\/screw-conveyor\/\">Screw Conveyor<\/a><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wxconveyor.com\/uploads\/201714443\/small\/large-u-type-spiral-tubular-screw-conveyor53585258555.jpg\"><\/p>\n<h2>Understanding Shaftless Screw Conveyors<\/h2>\n<p>First off, let me give you a quick rundown on shaftless screw conveyors. Unlike traditional screw conveyors that have a central shaft, shaftless ones have just a spiral flight. This design has a few advantages. It&#8217;s great for handling sticky, wet, or fibrous materials that might get stuck on the shaft of a regular conveyor. The open center allows these challenging materials to move more freely.<\/p>\n<h2>Factors Affecting Capacity<\/h2>\n<h3>Material Characteristics<\/h3>\n<p>The type of material you&#8217;re transporting is a big deal. Different materials have different densities, flowabilities, and particle sizes. For example, if you&#8217;re moving sand, it&#8217;s pretty dense and flows well. But if you&#8217;re dealing with sawdust or sludge, they&#8217;re much lighter and less free &#8211; flowing.<\/p>\n<ul>\n<li><strong>Density<\/strong>: Denser materials take up more space and weigh more per unit volume. A shaftless screw conveyor can move more of a dense material like gravel in a given amount of time compared to a lighter material like feathers.<\/li>\n<li><strong>Flowability<\/strong>: How well a material flows affects how easily it can be moved by the conveyor. Materials that are sticky or cohesive, like wet clay, will move more slowly through the conveyor than free &#8211; flowing materials such as grains.<\/li>\n<li><strong>Particle Size<\/strong>: Larger particles might need a bigger screw diameter or a slower speed to prevent jams. If you have large rocks, you can&#8217;t use the same settings as you would for fine powders.<\/li>\n<\/ul>\n<h3>Conveyor Design<\/h3>\n<p>The physical design of the shaftless screw conveyor also plays a crucial role in its capacity.<\/p>\n<ul>\n<li><strong>Screw Diameter<\/strong>: A larger screw diameter can generally move more material. Think of it like a bigger pipe can carry more water. If you need to move a large volume of material quickly, a larger &#8211; diameter screw is a good option.<\/li>\n<li><strong>Pitch<\/strong>: The pitch is the distance between the starts of consecutive flights. A larger pitch means that the screw can move more material per revolution. But if the pitch is too large, it might not be as efficient at moving certain materials, especially ones that are not very free &#8211; flowing.<\/li>\n<li><strong>Speed<\/strong>: The rotational speed of the screw is another important factor. Faster speeds can move more material in a shorter time, but there&#8217;s a limit. If the speed is too high, the material might not be properly conveyed and could spill or clog the conveyor.<\/li>\n<\/ul>\n<h3>Incline Angle<\/h3>\n<p>The angle at which the conveyor is set up also affects its capacity. If the conveyor is horizontal, it can move materials more easily and efficiently. But as you increase the incline angle, the capacity decreases. Moving materials uphill is harder, and the conveyor needs to work harder to overcome gravity. For a steeply inclined conveyor, you might need to adjust the screw design or speed to maintain an acceptable capacity.<\/p>\n<h2>Calculating the Capacity<\/h2>\n<p>To figure out the capacity of a shaftless screw conveyor, we usually use some pretty complex formulas. But I can give you a simplified idea of how it works.<\/p>\n<p>The basic formula for the volumetric capacity ($Q_v$) of a screw conveyor is:<\/p>\n<p>$Q_v=A\\times V\\times\\eta$<\/p>\n<p>where:<\/p>\n<ul>\n<li>$A$ is the cross &#8211; sectional area of the material being conveyed. This depends on the screw diameter and the percentage of the screw&#8217;s cross &#8211; section that is filled with material.<\/li>\n<li>$V$ is the speed of the material movement. It&#8217;s related to the rotational speed of the screw and the pitch.<\/li>\n<li>$\\eta$ is the efficiency factor, which takes into account things like the material&#8217;s flowability and the conveyor&#8217;s design.<\/li>\n<\/ul>\n<p>For example, if you have a shaftless screw conveyor with a large diameter, a high &#8211; pitched screw, and it&#8217;s moving a free &#8211; flowing material at a decent speed on a horizontal plane, you&#8217;re gonna have a high volumetric capacity.<\/p>\n<p>Let&#8217;s say you know the volumetric capacity, and you want to find the mass capacity ($Q_m$). You can use the following formula:<\/p>\n<p>$Q_m = Q_v\\times\\rho$<\/p>\n<p>where $\\rho$ is the density of the material.<\/p>\n<h2>Typical Capacity Ranges<\/h2>\n<p>In practical terms, the capacity of shaftless screw conveyors can vary widely. For small, low &#8211; speed conveyors used in things like laboratory setups or small &#8211; scale food processing, the capacity might be just a few cubic meters per hour. On the other hand, large &#8211; scale industrial conveyors used in mining or bulk material handling can have capacities of hundreds or even thousands of cubic meters per hour.<\/p>\n<p>For example, a 200 &#8211; mm diameter shaftless screw conveyor moving sand at a medium speed and on a horizontal plane might have a capacity of around 10 &#8211; 20 cubic meters per hour. But a 600 &#8211; mm diameter conveyor moving the same sand under optimal conditions could have a capacity of 100 &#8211; 200 cubic meters per hour.<\/p>\n<h2>Choosing the Right Capacity for Your Needs<\/h2>\n<p>When you&#8217;re choosing a shaftless screw conveyor for your operation, it&#8217;s important to know your material well and have a clear idea of how much material you need to move per hour. You also need to consider future expansion plans. It might be a good idea to choose a conveyor with a slightly higher capacity than you currently need to accommodate any growth in your production.<\/p>\n<p>If you&#8217;re not sure about the capacity requirements, that&#8217;s where we come in. As a screw conveyor supplier, we have a team of experts who can help you analyze your material, understand your process, and recommend the right conveyor with the appropriate capacity.<\/p>\n<h2>Why Choose Our Shaftless Screw Conveyors<\/h2>\n<p>We&#8217;ve been in the business of supplying screw conveyors for a long time, and we know what it takes to make a high &#8211; quality, reliable conveyor. Our shaftless screw conveyors are made from top &#8211; notch materials, ensuring durability and long &#8211; term performance. We customize each conveyor to meet your specific needs, whether it&#8217;s the screw diameter, pitch, or speed.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wxconveyor.com\/uploads\/201714443\/small\/grain-bucket-elevators-small-bucket-elevators03001216923.jpg\"><\/p>\n<p>We also provide excellent after &#8211; sales support. If you run into any issues with your conveyor, our team is just a call away. We&#8217;ll help you troubleshoot the problem and get your conveyor up and running as quickly as possible.<\/p>\n<h2>Let&#8217;s Talk<\/h2>\n<p><a href=\"https:\/\/www.wxconveyor.com\/conveyor\/scraper-conveyor\/\">Scraper Conveyor<\/a> If you&#8217;re interested in purchasing a shaftless screw conveyor or want to learn more about the capacity and how it can fit into your operation, don&#8217;t hesitate to reach out. We&#8217;re here to answer all your questions and help you find the perfect solution. Contact us, and let&#8217;s start a discussion about how our shaftless screw conveyors can improve your material handling processes.<\/p>\n<h3>References<\/h3>\n<ul>\n<li>&quot;Screw Conveyor Handbook&quot; by the Conveyor Equipment Manufacturers Association (CEMA)<\/li>\n<li>Technical papers on conveyor design from industry research institutes.<\/li>\n<li>Past project case studies and internal engineering reports from our company.<\/li>\n<\/ul>\n<hr>\n<p><a href=\"https:\/\/www.wxconveyor.com\/\">Wuxi Changrong Conveying Machinery Co., Ltd.<\/a><br \/>Wuxi Changrong Conveying Machinery Co., Ltd. is one of the most professional screw conveyor manufacturers and suppliers in China. Welcome to get custom screw conveyor from our factory. For price consultation, contact us now.<br \/>Address: Jiang Industrial Zone, Qianzhou Town, Huishan District, Wuxi Jiangsu Province<br \/>E-mail: changrong@changrong-jx.com<br \/>WebSite: <a href=\"https:\/\/www.wxconveyor.com\/\">https:\/\/www.wxconveyor.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is the capacity of a shaftless screw conveyor? That&#8217;s a question I get asked a &hellip; <a title=\"What is the capacity of a shaftless screw conveyor?\" class=\"hm-read-more\" href=\"http:\/\/www.moverscompanydubai.com\/blog\/2026\/09\/19\/what-is-the-capacity-of-a-shaftless-screw-conveyor-4ae0-a34892\/\"><span class=\"screen-reader-text\">What is the capacity of a shaftless screw conveyor?<\/span>Read more<\/a><\/p>\n","protected":false},"author":868,"featured_media":3380,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3343],"class_list":["post-3380","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-screw-conveyor-49ba-a3ac52"],"_links":{"self":[{"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/posts\/3380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/users\/868"}],"replies":[{"embeddable":true,"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/comments?post=3380"}],"version-history":[{"count":0,"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/posts\/3380\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/posts\/3380"}],"wp:attachment":[{"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/media?parent=3380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/categories?post=3380"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.moverscompanydubai.com\/blog\/wp-json\/wp\/v2\/tags?post=3380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}