{"id":3481,"date":"2026-05-25T15:32:42","date_gmt":"2026-05-25T15:32:42","guid":{"rendered":"https:\/\/spm-macchine.com\/filtro\/filtro-aria-motore\/"},"modified":"2026-09-04T09:43:03","modified_gmt":"2026-09-04T09:43:03","slug":"engine-air-filter","status":"publish","type":"filtro","link":"https:\/\/spm-macchine.com\/en\/filters\/air-gas\/engine-air-filter\/","title":{"rendered":"Engine Air Filter"},"content":{"rendered":"<p><strong>Two Formats, Two Line Configurations<\/strong><\/p>\n<p>SPM manufactures machines for engine air filters in both panel and cylindrical formats.<\/p>\n<p>For panel filters, the line is based on the 91XPR roller pleating machine, also available in the TP version with side sealing for trapezoidal-section filters. Downstream, it can be combined with 120, 200 or 300 casting lines and TMAT\/CMAT curing stages. For cylindrical filters, the process starts with 92XTS multilayer pre-cutting, followed by pleating, cross-cutting with edge gluing, and finally casting on Line 100, 120 Double, 304 or 400.<\/p>\n<p><strong>OEM or Aftermarket: Same Technology, Different Automation<\/strong><\/p>\n<p>Production rates vary depending on the format and level of automation. Small cylindrical filters can reach 600 units\/hour, while larger formats achieve approximately 120 units\/hour. For panel filters, the most automated lines can reach 480 filters\/hour, while manually controlled lines achieve around 180 filters\/hour.<\/p>\n<p>The difference between OEM and aftermarket customers lies in the level of automation. OEMs focus on continuous production and high volumes. The aftermarket prioritizes flexibility: multiple product codes, short batches and rapid format changes without long machine downtimes.<\/p>\n<p><strong>The Right Metric Is Not Millimeters: It Is Repeatability<\/strong><\/p>\n<p>When it comes to end-cap dimensional tolerances, SPM approaches the issue differently from the customer. The final geometry mainly depends on the mold and material, rather than on the machine itself.<\/p>\n<p>What the line guarantees is repeatability: the same process, batch after batch. The typical scrap rate is below 4%. In real-world production, this metric is more useful than any millimetric tolerance stated in a catalog.<\/p>\n","protected":false},"featured_media":3315,"template":"","meta":{"_acf_changed":false,"content-type":""},"categoria-filtro":[68],"class_list":["post-3481","filtro","type-filtro","status-publish","has-post-thumbnail","hentry","categoria-filtro-air-gas"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Engine Air Filter Machines | SPM<\/title>\n<meta name=\"description\" content=\"SPM manufactures machines for cylindrical and panel engine air filters, with production rates from 120 to 600 filters\/hour, designed for automated OEM production or flexible aftermarket manufacturing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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