{"id":5856,"count":1,"description":"<strong>ST400 Series Turbine Air Starters<\/strong> are compact, lightweight, high-performance starting solutions for diesel and gas engines where reliable starting in harsh conditions and precise configuration flexibility are required. The ST400 Series is an excellent choice for applications where electric starting is impractical or not recommended, and where a high power-to-weight ratio, fast acceleration and stable operation are essential.\r\n\r\n<img src=\"https:\/\/2026.protech.nu\/wp-content\/uploads\/2026\/01\/st400-series-turbine-air-starter.jpg\" alt=\"ST400 Series turbine air starter (ST400, ST455, ST499) \u2013 compact high-performance starting solution for diesel and gas engines\" width=\"559\" height=\"377\" \/>\r\n\r\nThe ST400 Series is based on a <strong>turbine motor design<\/strong>, where compressed air (or suitable gas) is directed through a high-speed rotating turbine. This enables strong starting capability with lower mass and a more compact design compared to vane air starters. Turbine technology delivers rapid acceleration, smooth torque output and reduced mechanical wear.\r\n\r\n<strong>Important:<\/strong> The ST400 Series is not a single fixed model, but a <strong>configurable starter platform<\/strong>. Final suitability depends on several parameters, including:\r\n<ul>\r\n \t<li><strong>ARC type<\/strong> (Air Restriction Control)<\/li>\r\n \t<li><strong>Operating pressure<\/strong><\/li>\r\n \t<li><strong>Gear ratio<\/strong><\/li>\r\n \t<li><strong>Pinion<\/strong><\/li>\r\n \t<li><strong>Flange type<\/strong><\/li>\r\n \t<li><strong>Rotation direction<\/strong><\/li>\r\n \t<li><strong>Mounting orientation<\/strong><\/li>\r\n<\/ul>\r\nFor this reason, we always recommend selecting the ST400 configuration together with our technical team to ensure perfect engine compatibility and smooth, mechanically safe starting.\r\n<h3>ARC (%) \u2013 what does it mean?<\/h3>\r\n<strong>ARC (Air Restriction Control)<\/strong> defines how much inlet air is used during starting. Different ARC options allow fine-tuning of starter behavior:\r\n<ul>\r\n \t<li><strong>Lower ARC<\/strong> \u2013 higher airflow and more aggressive starting<\/li>\r\n \t<li><strong>Higher ARC<\/strong> \u2013 more controlled starting and better performance at lower pressure<\/li>\r\n<\/ul>\r\n<h3>ST400 Series selection overview (indicative performance)<\/h3>\r\n<ul>\r\n \t<li><strong>ST400 (44% ARC)<\/strong> \u2013 higher power capability at higher pressure<\/li>\r\n \t<li><strong>ST455 (55% ARC)<\/strong> \u2013 balanced, versatile choice for many industrial engines<\/li>\r\n \t<li><strong>ST499 (99% ARC)<\/strong> \u2013 optimized for lower-pressure systems and specific applications<\/li>\r\n<\/ul>\r\n<strong>Typical operating pressures and maximum power (indicative):<\/strong>\r\n<ul>\r\n \t<li><strong>ST400 (44% ARC):<\/strong> 6,2 \/ 8,3 \/ 10,3 bar \u2192 up to 14 \/ 19 \/ 25 HP<\/li>\r\n \t<li><strong>ST455 (55% ARC):<\/strong> 4,1 \/ 6,2 \/ 8,3 bar \u2192 up to 10 \/ 18 \/ 23 HP<\/li>\r\n \t<li><strong>ST499 (99% ARC):<\/strong> 2,1 \/ 4,1 \/ 6,2 bar \u2192 up to 7 \/ 14 \/ 26 HP<\/li>\r\n<\/ul>\r\n<p style=\"font-size: 13px;color: #666\">* Performance values are indicative. Final output depends on selected configuration parameters.<\/p>\r\n\r\n<h3>Why choose the ST400 Series turbine air starters?<\/h3>\r\n<ul>\r\n \t<li><strong>Compact and lightweight<\/strong> \u2013 easier installation<\/li>\r\n \t<li><strong>Wide configuration flexibility<\/strong> \u2013 precise engine matching<\/li>\r\n \t<li><strong>Reliable in harsh environments<\/strong><\/li>\r\n \t<li><strong>Smooth, mechanically gentle starting<\/strong><\/li>\r\n<\/ul>\r\n<strong>Download the turbine air starter catalogue:<\/strong>\r\n<div style=\"margin: 10px 0\"><a style=\"display: inline-block;padding: 10px 16px;border: 2px solid #E14A2D;border-radius: 4px;font-weight: 600;color: #e14a2d;text-decoration: none\" href=\"https:\/\/2026.protech.nu\/wp-content\/uploads\/2026\/01\/ESS-Catalogue-_2012-Forrm-IRITS-0611-031-1.pdf\" target=\"_blank\" rel=\"noopener\">ESS Air Starters Catalogue (PDF) \u2013 SS, ST and TS Series\r\n<\/a><\/div>","link":"https:\/\/protech.nu\/en\/power-tools\/ingersoll-rand-air-starters-and-air-motors\/vane-and-turbine-air-starters\/turbine-air-starters-st\/st400-turbine-air-starters\/","name":"ST400 Series Turbine Air Starters","slug":"st400-turbine-air-starters","taxonomy":"product_cat","parent":5776,"meta":[],"menu_order":0,"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ST400 Series Turbine Air Starters \u2013 Configurable Starting Solutions for Diesel and Gas Engines<\/title>\n<meta name=\"description\" content=\"ST400 Series turbine air starters deliver compact, high-performance starting for diesel and gas engines. 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