{"id":5949,"date":"2026-01-04T22:44:43","date_gmt":"2026-01-04T22:44:43","guid":{"rendered":"https:\/\/protech.nu\/toode\/ingersoll-rand-st400c03r29-turbine-air-starter\/"},"modified":"2026-07-31T15:31:15","modified_gmt":"2026-07-31T13:31:15","slug":"ingersoll-rand-st400c03r29-turbine-air-starter-st400-series","status":"publish","type":"product","link":"https:\/\/protech.nu\/en\/product\/ingersoll-rand-st400c03r29-turbine-air-starter-st400-series\/","title":{"rendered":"Ingersoll Rand ST400C03R29 \u2013 turbine air starter (ST400 series)"},"content":{"rendered":"<section style=\"text-align: left !important; max-width: 1000px; margin: 0 auto 0 0; font-family: Arial, sans-serif; line-height: 1.6; padding: 10px;\">\n<h1 style=\"color: #d40000; text-align: left !important; font-weight: bold; font-size: 1.8em; margin: 0 0 15px 0; border-bottom: 3px solid #d40000; padding-bottom: 10px;\">Ingersoll Rand ST400C03R29 Turbine Air Starter (ATEX)<\/h1>\n<p style=\"text-align: left !important; font-size: 1.1em; margin-bottom: 20px;\"><strong>Ingersoll Rand ST400C03R29 turbine air starter<\/strong> is part of the ST400 series of compact, high-performance starting solutions designed for diesel and gas engines operating in demanding industrial environments. Thanks to lube-free technology and certified ATEX compliance, this starter is fully equipped for safe operation even in explosive industrial atmospheres.<\/p>\n<div style=\"margin: 15px 0; width: 100%; max-width: 400px; text-align: left !important;\">\n<figure id=\"attachment_protech_st400\" aria-describedby=\"caption-attachment-protech-st400\" style=\"width: 400px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-protech\" src=\"https:\/\/protech.nu\/wp-content\/uploads\/2026\/01\/st400-series-turbine-air-starter-12.jpg\" alt=\"Ingersoll Rand ST400C03R29 Turbine Air Starter\" width=\"400\" height=\"267\" \/><figcaption id=\"caption-attachment-protech-st400\" class=\"wp-caption-text\">Ingersoll Rand ST400C03R29 Industrial ATEX Turbine Air Starter<\/figcaption><\/figure>\n<\/div>\n<h3 style=\"text-align: left !important; margin: 25px 0 15px 0; color: #333; font-weight: bold;\">Technical Overview \u2013 ST400C03R29<\/h3>\n<p style=\"text-align: left !important; margin-bottom: 15px;\">ST400C03R29 is a <strong>pre-configured ST400 series variant<\/strong>, where the model code defines specific mounting and operating parameters:<\/p>\n<ul style=\"padding-left: 20px; text-align: left !important; margin-bottom: 25px;\">\n<li style=\"margin-bottom: 8px;\"><strong>ST400 (44% ARC):<\/strong> High-pressure series designed for working pressures up to <strong>10.3 bar<\/strong>, providing maximum starting torque and optimal air efficiency.<\/li>\n<li style=\"margin-bottom: 8px;\"><strong>C:<\/strong> Gear ratio \/ reduction gear configuration.<\/li>\n<li style=\"margin-bottom: 8px;\"><strong>03:<\/strong> Flange type (SAE 3 flange).<\/li>\n<li style=\"margin-bottom: 8px;\"><strong>R29:<\/strong> Rotation direction (clockwise \/ <em>Right-hand<\/em>) with specific pinion code R29.<\/li>\n<\/ul>\n<p style=\"text-align: left !important; margin-bottom: 15px;\">The ST400 series is based on a <strong>high-efficiency turbine motor design<\/strong>, where compressed air is directed through a high-speed rotating turbine. This design delivers strong starting torque, rapid acceleration, and an excellent power-to-weight ratio compared to traditional vane-type air starters. Turbine technology minimizes mechanical wear and is particularly well suited for applications with frequent starts and critical reliability requirements.<\/p>\n<p><!-- ATEX INFO BOX --><\/p>\n<div style=\"background: #fff8f8; border: 1px solid #ffcccc; border-left: 5px solid #d40000; padding: 18px; border-radius: 6px; margin: 25px 0; text-align: left !important;\">\n<h3 style=\"margin: 0 0 10px 0; color: #d40000; font-size: 1.15em; font-weight: bold;\">ATEX Explosion Protection Directive<\/h3>\n<p style=\"font-size: 0.95em; color: #333; margin: 0 0 10px 0;\">The starter complies with the European ATEX directive for use in potentially explosive atmospheres (as a component for incorporation):<\/p>\n<ul style=\"padding-left: 20px; margin: 0; font-size: 0.92em; color: #444;\">\n<li><strong>ATEX marking:<\/strong> Ex II 2 GD c IIB 70\u00b0C X<\/li>\n<li><strong>Classification:<\/strong> Group II, Category 2 (Gases and Dust \/ Zone 1 and 21)<\/li>\n<li><strong>Max. surface temperature:<\/strong> 70\u00b0C<\/li>\n<\/ul>\n<\/div>\n<h3 style=\"text-align: left !important; margin: 30px 0 15px 0; color: #333; font-weight: bold;\">Technical Data at 9.3 bar Working Pressure<\/h3>\n<p style=\"text-align: left !important; margin-bottom: 15px;\">Performance specifications for model <strong>ST400C03R29<\/strong> at a nominal working pressure of <strong>9.3 bar<\/strong>:<\/p>\n<div style=\"margin: 20px 0; text-align: left !important;\">\n<table style=\"width: 100%; border-collapse: collapse; max-width: 600px;\">\n<thead>\n<tr style=\"background: #f1f1f1;\">\n<th style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\">Parameter<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>Model<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">ST400C03R29<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>ATEX certification<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">Yes (Ex II 2 GD c IIB 70\u00b0C X)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>Maximum allowable pressure<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">10.3 bar (150 psi)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>Nominal working pressure<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>9.3 bar<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>Starting moment (Breakaway Torque)<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>~183 Nm<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>Maximum power<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>~22 HP<\/strong> (16.4 kW)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>Speed at max power<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">~1650 rpm<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>Air consumption (Flow)<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">~318 L\/s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3 style=\"text-align: left !important; margin: 25px 0 15px 0; color: #333; font-weight: bold;\">ARC (%) \u2013 Why it matters<\/h3>\n<p style=\"text-align: left !important; margin-bottom: 10px;\"><strong>ARC (Air Restriction Control)<\/strong> defines how much inlet air is utilized during the starting process.<\/p>\n<p style=\"text-align: left !important; margin-bottom: 15px;\">A <strong>44% ARC<\/strong> provides a balanced combination of fast response and controlled engagement, making it suitable for a wide range of industrial engines requiring smooth and repeatable starting performance.<\/p>\n<h3 style=\"text-align: left !important; margin: 25px 0 15px 0; color: #333; font-weight: bold;\">Key Benefits<\/h3>\n<ul style=\"padding-left: 20px; text-align: left !important; margin-bottom: 25px;\">\n<li style=\"margin-bottom: 8px;\"><strong>Compact and lightweight design<\/strong> \u2013 easy installation, even in confined spaces<\/li>\n<li style=\"margin-bottom: 8px;\"><strong>Turbine technology<\/strong> \u2013 excellent power-to-weight ratio<\/li>\n<li style=\"margin-bottom: 8px;\"><strong>Low maintenance requirement<\/strong> \u2013 turbine motor requires no external lubrication<\/li>\n<li style=\"margin-bottom: 8px;\"><strong>Pre-engaged starting<\/strong> \u2013 reduced shock loads and minimized gear wear<\/li>\n<li style=\"margin-bottom: 8px;\"><strong>Industrial-grade reliability<\/strong> \u2013 suitable for harsh and demanding environments<\/li>\n<\/ul>\n<h3 style=\"text-align: left !important; margin: 25px 0 15px 0; color: #333; font-weight: bold;\">Typical Applications<\/h3>\n<ul style=\"padding-left: 20px; text-align: left !important; margin-bottom: 25px;\">\n<li style=\"margin-bottom: 8px;\">Marine engines and auxiliary generators<\/li>\n<li style=\"margin-bottom: 8px;\">Power generation<\/li>\n<li style=\"margin-bottom: 8px;\">Industrial diesel and gas engines<\/li>\n<li style=\"margin-bottom: 8px;\">Stationary and off-highway applications<\/li>\n<\/ul>\n<p><!-- USP SECTION --><\/p>\n<div style=\"background: #fdfdfd; border: 1px solid #eee; border-left: 5px solid #d40000; padding: 22px; border-radius: 6px; margin: 35px 0; text-align: left !important;\">\n<h3 style=\"margin: 0 0 12px 0; color: #333; font-weight: bold; font-size: 1.25em; text-align: left !important;\">Why choose Protech?<\/h3>\n<p style=\"font-size: 0.98em; color: #444; margin: 0 0 15px 0; line-height: 1.6; text-align: left !important;\">With over <strong>20 years of experience<\/strong> in starter OEM support and service, and as the <strong>only authorized service workshop<\/strong> for air starters in the entire Nordic and Baltic region, we ensure that your equipment meets all technical and safety requirements (including ATEX).<\/p>\n<\/div>\n<div style=\"margin: 15px 0;\">\n<p style=\"font-weight: 600; margin-bottom: 8px;\">Download turbine air starter catalog:<\/p>\n<p><a style=\"display: inline-block; padding: 10px 16px; border: 2px solid #d40000; border-radius: 4px; font-weight: 600; color: #d40000; text-decoration: none;\" href=\"https:\/\/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 ST400 series and configurations<\/a>\n<\/div>\n<div style=\"background: #fdfdfd; border: 1px solid #eee; padding: 20px; border-radius: 8px; margin-top: 30px; margin-bottom: 30px; text-align: left !important;\">\n<h4 style=\"margin: 0 0 10px 0; color: #d40000; font-size: 1.1em;\">Request a quote or technical advice<\/h4>\n<p style=\"font-size: 0.95em; color: #444; margin-bottom: 15px;\">Would you like to check this model&#8217;s compatibility with your engine, or do you need spare parts and authorized service? Our technical team answers within 1 business day.<\/p>\n<div style=\"margin-top: 15px; text-align: left !important;\"><a style=\"display: inline-block; border: 2px solid #d40000; background-color: #d40000; color: #ffffff; padding: 12px 22px; border-radius: 4px; text-decoration: none; font-weight: 600; font-size: 15px; margin-right: 10px; margin-bottom: 10px;\" href=\"mailto:protech@protech.nu?subject=Quote%20Request%20ST400C03R29&amp;body=Hello!%0D%0A%0D%0AI%20would%20like%20to%20request%20a%20quote%20for%20starter%20ST400C03R29.%0D%0A%0D%0ACompany:%0D%0AName:%0D%0APhone:%0D%0A\">Request a quote<\/a><br \/>\n<a style=\"display: inline-block; border: 2px solid #d40000; color: #d40000; padding: 12px 22px; border-radius: 4px; text-decoration: none; font-weight: 600; font-size: 15px; margin-bottom: 10px;\" href=\"mailto:protech@protech.nu?subject=Technical%20Advice%20-%20ST400C03R29&amp;body=Hello!%0D%0A%0D%0AI%20need%20technical%20advice%20regarding%20model%20ST400C03R29.%0D%0A\">Technical advice<\/a><\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<div style=\"font-family: Arial, sans-serif; font-size: 0.95em; line-height: 1.5; color: #333;\">\n<p style=\"margin-bottom: 10px;\"><strong>Ingersoll Rand ST400C03R29<\/strong> is a high-performance industrial turbine air starter for medium-sized diesel and gas engines. As the only authorized service workshop in the Nordic and Baltic region with 20 years of experience, Protech guarantees safe operation, original parts, and full ATEX compliance in demanding environments.<\/p>\n<ul style=\"padding-left: 18px; margin: 0 0 10px 0;\">\n<li style=\"margin-bottom: 4px;\"><strong>Model \/ ARC:<\/strong> ST400 (44% ARC, high-pressure version)<\/li>\n<li style=\"margin-bottom: 4px;\"><strong>ATEX marking:<\/strong> Ex II 2 GD c IIB 70\u00b0C X<\/li>\n<li style=\"margin-bottom: 4px;\"><strong>Working pressure:<\/strong> Up to 10.3 bar (optimized for 9.3 bar)<\/li>\n<li style=\"margin-bottom: 4px;\"><strong>Starting torque:<\/strong> ~183 Nm (at 9.3 bar)<\/li>\n<li style=\"margin-bottom: 4px;\"><strong>Max power:<\/strong> ~16.4 kW (22 HP)<\/li>\n<li style=\"margin-bottom: 4px;\"><strong>Flange &#038; Rotation:<\/strong> SAE 3 \/ Clockwise (R29 pinion)<\/li>\n<\/ul>\n<p style=\"font-size: 0.9em; color: #666; margin: 0;\"><em>Need authorized service, spare parts, or help with ATEX installation? Contact Protech today!<\/em><\/p>\n<\/div>\n","protected":false},"featured_media":5948,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[287,5856,5776,5756],"product_tag":[],"class_list":["post-5949","product","type-product","status-publish","has-post-thumbnail","product_cat-ingersoll-rand-air-starters-and-air-motors","product_cat-st400-turbine-air-starters","product_cat-turbine-air-starters-st","product_cat-vane-and-turbine-air-starters","first","instock","taxable","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ingersoll Rand ST400C03R29 Turbine Air Starter ST400 Series<\/title>\n<meta name=\"description\" content=\"Powerful Ingersoll Rand ST400C03R29 turbine air starter from the ST400 series for heavy-duty applications. Buy at Protech!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/protech.nu\/en\/product\/ingersoll-rand-st400c03r29-turbine-air-starter-st400-series\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ingersoll Rand ST400C03R29 Turbine Air Starter ST400 Series\" \/>\n<meta property=\"og:description\" content=\"Powerful Ingersoll Rand ST400C03R29 turbine air starter from the ST400 series for heavy-duty applications. 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