{"id":3672,"date":"2026-08-05T09:52:16","date_gmt":"2026-08-05T07:52:16","guid":{"rendered":"https:\/\/www.tecnoforsrl.com\/?p=3672"},"modified":"2026-08-05T10:01:57","modified_gmt":"2026-08-05T08:01:57","slug":"case-study-cross-member","status":"publish","type":"post","link":"https:\/\/www.tecnoforsrl.com\/en\/case-study-cross-member\/","title":{"rendered":"Case Study &#8211; Cross Member"},"content":{"rendered":"<h2>Rear engine support bolted to the main frame<\/h2>\n<h3>PRODUCT: ENGINE CROSS MEMBER RR \u2013 Rear engine support<\/h3>\n<p>Structural aluminum component designed as the <b>rear engine support,<\/b><span style=\"font-weight: 400;\"> bolted directly to the vehicle\u2019s main frame. The part is produced as a cast aluminum component with variable wall thickness and requires strict control of porosity, roughness and geometric stability. <\/span><\/p>\n<p><b>Mass:<\/b> ~6,5 Kg Dimension: ~400 \u00d7 130 \u00d7 80 mm<br \/>\n<b>Material: <\/b>Aluminum alloy EN 1706 \u2013 AC-43100 ST6<br \/>\n<b>Raw part obtained per: <\/b>Gravity \/ shell casting with porosity control (Porosity class 1.2 \u2013 DBL 4949)<br \/>\n<b>Finished part obtained via:<\/b> Machining + Deburring (shot-blasting or fine grinding allowed) + Dimensional and roughness inspection (Rz 100)<br \/>\n<b>Challenge: <\/b>ensure crack-free casting and geometric stability over lengths &gt; 350 mm<br \/>\n<b>OEM:<\/b><span style=\"font-weight: 400;\"> Mercedes-Benz (ENGINE CROSS MEMBER RR \u2013 MOTORQUERTRAEGER HI)<\/span><\/p>\n<h3><b>PROJECT OVERVIEW<\/b><\/h3>\n<p>The Cross Member is a <b>rear engine support<\/b>, responsible for transferring loads to the main frame and ensuring stability of the powertrain assembly.<\/p>\n<p><span style=\"font-weight: 400;\">Throughout the project TECNOFOR managed:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">development of the <b>AC-43100 ST6 aluminum casting process<\/b> with controlled porosity (Porosity class 1.2)<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">compliance with <b>ISO 2768-m tolerances<\/b> and shape specifications (3\u00b0 draft angle, raised form up to 0.5 mm allowed)<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>machining operations<\/b> on complex geometries and long dimensions (>350 mm)<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>deburring and finishing<\/b> (shot-blasting or fine grinding allowed)<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">control of <b>surface roughness Rz 100<\/b> on functional areas<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">integration of <b>MBN 10435 markings<\/b> and identification requirements (Smaragd, EVT, SAG 82321)<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The result is a robust engine support, fully compliant with Mercedes-Benz specifications and ready for installation on the main frame.<\/span><\/p>\n<h3><b>PRODUCT EXAMPLES<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Engine supports and structural aluminum components developed and validated with European Tier1 and OEM manufacturers.<\/span><\/p>\n<h3><b>NEXT PROJECT<\/b><\/h3>\n<p><a href=\"https:\/\/www.tecnoforsrl.com\/en\/case-study-battery-pack-structural-cross-member\/\"><span style=\"font-weight: 400;\">Battery Box Plates \u2013 Internal reinforcement for heavy-duty battery housings<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rear engine support bolted to the main frame PRODUCT: ENGINE CROSS MEMBER RR \u2013 Rear engine support Structural aluminum component designed as the rear engine support, bolted directly to the&#8230;<\/p>\n","protected":false},"author":2,"featured_media":3674,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[31],"tags":[],"table_tags":[],"class_list":["post-3672","post","type-post","status-publish","format-standard","has-post-thumbnail","category-case-study-en"],"_links":{"self":[{"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/posts\/3672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/comments?post=3672"}],"version-history":[{"count":2,"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/posts\/3672\/revisions"}],"predecessor-version":[{"id":3703,"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/posts\/3672\/revisions\/3703"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/media\/3674"}],"wp:attachment":[{"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/media?parent=3672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/categories?post=3672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/tags?post=3672"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/www.tecnoforsrl.com\/en\/wp-json\/wp\/v2\/table_tags?post=3672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}