{"id":4071,"date":"2026-11-08T09:23:06","date_gmt":"2026-11-08T08:23:06","guid":{"rendered":"https:\/\/mo-di-tec.fr\/?p=4071"},"modified":"2026-11-08T15:22:21","modified_gmt":"2026-11-08T14:22:21","slug":"low-speed-or-high-speed-granulator","status":"publish","type":"post","link":"https:\/\/mo-di-tec.fr\/en\/low-speed-or-high-speed-granulator\/","title":{"rendered":"Low-speed or high-speed granulator: how to choose?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">To recycle sprues and rejected parts beside the press, there are two technologies: the conventional high-speed granulator, whose rotor turns at several hundred rpm above a screen, and the low-speed granulator, which turns at 25\u201330 rpm with high torque. Here is what sets them apart.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The principle: torque rather than speed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A high-speed granulator works on speed and inertia. The screen sets a maximum size: material keeps circulating in the chamber until it can pass through. That is what causes heat, dust and fines.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A low-speed granulator works on torque, delivered by a geared motor. There is no screen: the material is cut in a single pass, and the tooth geometry of the roller sets the regrind size (from about 5 to 10 mm depending on the tooth profile).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What it changes on the shop floor<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Better regrind<\/strong>: consistent granule size, no long granules, very few fines, little heating. The regrind goes back into production more easily.<\/li>\n\n\n\n<li><strong>Less wear<\/strong>: at low speed, cutting parts wear slowly. Fewer interventions and fewer parts to replace.<\/li>\n\n\n\n<li><strong>Less energy<\/strong>: the torque comes from the gearbox, not from motor speed. At MO-DI-TEC, installed power ranges from 0.55 kW to 2 \u00d7 4 kW.<\/li>\n\n\n\n<li><strong>Less noise<\/strong>: under 70 dB(A) depending on the material, so the granulator can sit beside the press without an enclosure.<\/li>\n\n\n\n<li><strong>Restart under load<\/strong>: with no inertia to rebuild, the granulator restarts with a full chamber. No hopper to empty after a stop.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Which materials?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Low speed makes the most sense on hard, brittle or filled engineering materials: PEEK, ABS, glass-filled PA, PC, PBT, POM, glass- or carbon-filled polymers. The harder the material, the wider the gap with a high-speed granulator.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Three common misconceptions<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u201cA high-speed granulator has more throughput.\u201d<\/strong> Beside the press, the useful throughput is the press\u2019s own. Our low-speed granulators cover roughly 2 to 200 kg\/h depending on model and material.<\/li>\n\n\n\n<li><strong>\u201cMy parts are too big for a slow granulator.\u201d<\/strong> The Titan ranges handle bumpers, housings and massive parts.<\/li>\n\n\n\n<li><strong>\u201cIt costs more.\u201d<\/strong> Think total cost: lower installed power, slow wear, regrind returned to production.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What about high-speed granulators?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">They remain the right choice for some applications. MO-DI-TEC also offers conventional-speed granulators, the Mini BM and BM ranges. What matters is to start from your material, your part size and your throughput.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Not sure? We can run a grinding test on your material. Contact: <a href=\"mailto:commercial@mo-di-tec.fr\">commercial@mo-di-tec.fr<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Torque versus speed: what sets a low-speed granulator apart from a high-speed one, and when to choose each.<\/p>\n","protected":false},"author":2,"featured_media":3755,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-4071","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Low-speed or high-speed granulator: how to choose? - Moditec<\/title>\n<meta name=\"description\" content=\"Torque versus speed: what sets a low-speed granulator apart from a high-speed one, and how to choose for your materials and applications beside the press.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mo-di-tec.fr\/en\/low-speed-or-high-speed-granulator\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Low-speed or high-speed granulator: how to choose? 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