{"id":51470,"date":"2022-03-30T12:18:57","date_gmt":"2022-03-30T09:18:57","guid":{"rendered":"https:\/\/unox.com.tr\/what-is-rotary-pneumatic-actuator\/"},"modified":"2023-02-15T11:06:21","modified_gmt":"2023-02-15T08:06:21","slug":"what-is-rotary-pneumatic-actuator","status":"publish","type":"post","link":"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/","title":{"rendered":"What is Rotary Pneumatic Actuator?"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Sayfa \u0130\u00e7eri\u011fi<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#What_is_Rotary_Pneumatic_Actuator_How_is_the_Working_Principle\" >What is Rotary Pneumatic Actuator? How is the Working Principle?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#What_is_the_Working_Principle_of_Quarter_Turn_Rack_Rack_Pneumatic_Actuators\" >What is the Working Principle of Quarter Turn (Rack Rack) Pneumatic Actuators?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#What_are_Double_Acting_Quarter_Turn_Pneumatic_Actuators\" >What are Double Acting Quarter Turn Pneumatic Actuators?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#What_is_a_Single_Acting_Quarter_Turn_Pneumatic_Actuator\" >What is a Single Acting Quarter Turn Pneumatic Actuator?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#Quarter_Turn_Pneumatic_Actuator_Torque_Characteristics\" >Quarter Turn Pneumatic Actuator Torque Characteristics<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#What_are_the_Standards\" >What are the Standards?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#What_is_ISO_5211_2017\" >What is ISO 5211:2017?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#NAMUR_VDIVDE_3845_2010-09_What_is_it\" >NAMUR VDI\/VDE 3845: 2010-09 What is it?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#What_is_VDIVDE_3845_Namur\" >What is VDI\/VDE 3845 (Namur)?<\/a><ul class='ez-toc-list-level-5' ><li class='ez-toc-heading-level-5'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/unox.com.tr\/en\/what-is-rotary-pneumatic-actuator\/#What_is_ISO_5211DIN3337\" >What is ISO 5211\/DIN3337?<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_Rotary_Pneumatic_Actuator_How_is_the_Working_Principle\"><\/span>What is Rotary Pneumatic Actuator? How is the Working Principle?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>Pneumatic Rotary Actuators are devices used to convert compressed air or process gas energy into rotary motion in a cylinder. These devices provide advantages such as high power, simplicity and longevity according to their durability dimensions. <strong>Rotary Pneumatic Actuators are<\/strong> collected in 3 main groups as their working principle. These are as follows:<\/p>\n\n<ol class=\"wp-block-list\"><li>Scoth Yoke (Scottish Yoke)<\/li><li>Vane (Winged)<\/li><li>Rack and Pinion<\/li><\/ol>\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"322\" height=\"196\" src=\"https:\/\/unox.com.tr\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-10.png\" alt=\"\" class=\"wp-image-9704\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-10.png 322w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-10-150x91.png 150w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-10-300x183.png 300w\" sizes=\"(max-width: 322px) 100vw, 322px\" \/><\/figure>\n\n<p>Rotary Pneumatic Actuators are generally designed to make only \u00bc turn to remotely open\/close <strong>Butterfly<\/strong> and <strong>Ball<\/strong> <strong>valves<\/strong>. For this reason, the movement in rotary actuators is limited between 0-90\u00b0 with a 5% plus-minus tolerance. Rack and Pinion pneumatic actuators are known as <strong>quarter turn pneumatic actuators.<\/strong> Butterfly and ball valves are the most known and used models in terms of cost and ease of accessibility compared to others. Rotary pneumatic actuators can be equipped with dry contact or proximity limit switch boxes for on\/off information, I\/P positioner for modulating, proportional control, and 5\/2 or 3\/2 <strong>namur directional valves<\/strong> for opening and closing.<\/p>\n\n<p>For the valve connection of the actuators, the valve connection shafts are produced in accordance with the diagonal, square, star shapes, and the connection size diameters, which are called square mile diameter connection, increase depending on the valve shaft whose diameter increases as the actuator piston diameter increases.<\/p>\n\n<p><strong>To review Pneumatic Actuators:<\/strong> <a href=\"https:\/\/www.unox.com.tr\/urun-kategorileri\/pnomatik-vanalar\/pnomatik-aktuatorler\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.unox.com.tr\/urun-categories\/pnomatik-valves\/pnomatik-aktuators\/<\/a><\/p>\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_Working_Principle_of_Quarter_Turn_Rack_Rack_Pneumatic_Actuators\"><\/span>What is the Working Principle of Quarter Turn (Rack Rack) Pneumatic Actuators?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>In pneumatic actuators, rack gear is designed to convert linear motion into rotary motion.<\/p>\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/unox.com.tr\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-11.png\" alt=\"\" class=\"wp-image-9705\" width=\"322\" height=\"196\" title=\"\"><\/figure>\n\n<p>As can be seen in the image, this very common design consists of 3 basic components: Piston, rack and pinion gear. When the chamber on one side of the piston is pressurized with compressed air, it moves the rack gear inward and the movement output rotary shaft converts this movement into rotary motion through the gear connection with the pawn gear. Double pistons are used to double the output power. In addition, this design provides a bearing and double-sided balance in the piston. Then it is provided by pressurizing the other chamber to move in the opposite direction or by placing springs in the chambers.<\/p>\n\n<p> The design formed by pressurizing both chambers in the pneumatic cylinder is defined as <strong>Double-acting<\/strong>, the design formed by placing springs in the chambers is defined as <strong>single-acting.<\/strong><\/p>\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_are_Double_Acting_Quarter_Turn_Pneumatic_Actuators\"><\/span>What are Double Acting Quarter Turn Pneumatic Actuators?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"938\" height=\"267\" src=\"https:\/\/unox.com.tr\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-12.png\" alt=\"\" class=\"wp-image-9706\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-12.png 938w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-12-150x43.png 150w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-12-600x171.png 600w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-12-300x85.png 300w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-12-768x219.png 768w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-12-640x182.png 640w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-12-400x114.png 400w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-12-367x104.png 367w\" sizes=\"(max-width: 938px) 100vw, 938px\" \/><\/figure>\n\n<p><strong>Double-acting pneumatic actuator<\/strong> can be operated with 5\/2 Directional valve. By changing the connection of the supply air, the working direction can be changed clockwise or counterclockwise. In all pneumatic actuators, it is mandatory to have a discharge so that the actuator can work in two directions and the air in the room does not block the movement in the opposite direction. Higher torque values can be obtained by increasing the air pressure and piston diameter. If requested, stroke limitation can be made in both working directions.<\/p>\n\n<p><a href=\"https:\/\/www.hepsiburada.com\/unox-cift-etkili-pnomatik-aktuator-uda050-p-HBV00000VT7FZ?magaza=UNOX%20VALF\" rel=\"nofollow noopener\" target=\"_blank\">Click<\/a> To Buy Double Acting Pneumatic Actuator<\/p>\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_Single_Acting_Quarter_Turn_Pneumatic_Actuator\"><\/span>What is a Single Acting Quarter Turn Pneumatic Actuator?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"938\" height=\"255\" src=\"https:\/\/unox.com.tr\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-13.png\" alt=\"\" class=\"wp-image-9707\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-13.png 938w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-13-150x41.png 150w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-13-600x163.png 600w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-13-300x82.png 300w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-13-768x209.png 768w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-13-640x174.png 640w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-13-400x109.png 400w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-13-367x100.png 367w\" sizes=\"(max-width: 938px) 100vw, 938px\" \/><\/figure>\n\n<p> ccw (counterclockwise) cw (clockwise)<\/p>\n\n<p>In single-acting quarter-turn pneumatic actuators, air is taken into only one chamber and is responsible for only one-way movement. Movement in the opposite direction is provided by a spring group placed in the chamber on both sides. The disadvantage of single-acting pneumatic actuators is the reduced output force throughout the entire stroke due to counter-spring forces.<\/p>\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quarter_Turn_Pneumatic_Actuator_Torque_Characteristics\"><\/span>Quarter Turn Pneumatic Actuator Torque Characteristics<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/unox.com.tr\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-14.png\" alt=\"\" class=\"wp-image-9708\" width=\"322\" height=\"196\" title=\"\"><\/figure>\n\n<p>Although a constant torque value can be obtained throughout the stroke (at 0 and 90\u00b0) in double-acting pneumatic actuators, maximum torque can be obtained at the beginning of air opening (0\u00b0) in single-acting pneumatic actuators, while at the end of the stroke (90\u00b0) it decreases due to the counter-spring force. The torque value increases from (0\u00b0) when the spring is fully tensioned (90\u00b0). For this reason, in practice, single-acting actuators are chosen with larger diameters than double-acting actuators. An important issue to be considered in practice is the selection should be made by using a value as large as 30% safety factor of the current torque value while selecting the actuator due to friction losses and tolerances of the components.<\/p>\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_are_the_Standards\"><\/span>What are the Standards?<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/unox.com.tr\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-15.png\" alt=\"\" class=\"wp-image-9709\" width=\"322\" height=\"196\" title=\"\"><\/figure>\n\n<p>Pneumatic actuators have been standardized to be compatible and interchangeable with products from various manufacturers. These standards specify the dimensions of various components such as the actuator, air ports, position indicator, accessory mounts, shaft shafts.<\/p>\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_ISO_5211_2017\"><\/span>What is ISO 5211:2017?<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n<p>It specifies the requirements for connecting actuators to industrial valves. Specifies the dimensions and torque values of flange and drive components.<\/p>\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"NAMUR_VDIVDE_3845_2010-09_What_is_it\"><\/span>NAMUR VDI\/VDE 3845: 2010-09 What is it?<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n<p>This standard includes specifications between the actuator and a process valve supplying compressed air. <strong>Namur valves<\/strong> offer a mounting application according to VDI\/VDE 3845, which includes two vents on the flat side of the valve and additional holes to secure the valve to the actuator stem.<\/p>\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/unox.com.tr\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-16.png\" alt=\"\" class=\"wp-image-9710\" width=\"322\" height=\"196\" title=\"\"><\/figure>\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_VDIVDE_3845_Namur\"><\/span>What is VDI\/VDE 3845 (Namur)?<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n<p>It covers the connection standards of the directional valves on the body.<\/p>\n\n<h5 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_ISO_5211DIN3337\"><\/span>What is ISO 5211\/DIN3337?<span class=\"ez-toc-section-end\"><\/span><\/h5>\n\n<p>It covers the connection standards of the pneumatic actuator to the process valve.<\/p>\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/unox.com.tr\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-17.png\" alt=\"\" class=\"wp-image-9711\" width=\"322\" height=\"196\" title=\"\"><\/figure>\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/unox.com.tr\/wp-content\/themes\/woodmart\/images\/lazy.svg\" data-src=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-18.png\" alt=\"\" class=\"wp-image-9712\" width=\"208\" height=\"253\" title=\"\" srcset=\"\" data-srcset=\"https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-18.png 208w, https:\/\/unox.com.tr\/wp-content\/uploads\/2022\/03\/image-18-150x182.png 150w\" sizes=\"(max-width: 208px) 100vw, 208px\" \/><figcaption>Valve Connection Types<\/figcaption><\/figure>\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Pn\u00f6matik Akt\u00fcat\u00f6rler Nedir? \u00c7al\u0131\u015fma Prensipleri Nelerdir? What Are Pneumatic Actuators? #12\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/pPg-zEwzKjs?start=1&#038;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>What is Rotary Pneumatic Actuator? What does it do? <\/p>\n","protected":false},"author":4,"featured_media":30603,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[],"tags":[],"class_list":["post-51470","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/posts\/51470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/comments?post=51470"}],"version-history":[{"count":0,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/posts\/51470\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/media\/30603"}],"wp:attachment":[{"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/media?parent=51470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/categories?post=51470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/tags?post=51470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}