{"id":916,"date":"2026-09-10T04:02:02","date_gmt":"2026-09-10T04:02:02","guid":{"rendered":"https:\/\/nm-coupling.net\/blog\/how-to-read-nm-coupling-dimensions\/"},"modified":"2026-09-10T06:14:07","modified_gmt":"2026-09-10T06:14:07","slug":"how-to-read-nm-coupling-dimensions","status":"publish","type":"ep_nm_article","link":"https:\/\/nm-coupling.net\/nl\/blog\/how-to-read-nm-coupling-dimensions\/","title":{"rendered":"How to Read NM Coupling Dimensions: D, D1, d max, L and S"},"content":{"rendered":"<p>Technical tables become more useful once every dimension is attached to a decision. On an NM coupling, D and D1 help describe the outside envelope and hub geometry, d max limits the specified bore capacity, L controls axial space, and S gives the model-specific separation value used during assembly.<\/p>\n<h2>d max is usually the first interface check.<\/h2>\n<p>Both shafts have to fit. If one exceeds the specified d max, the model is not a clean candidate even when its torque rating looks comfortable. Moving up a size requires a new envelope check because D and L also increase.<\/p>\n<h2>S belongs in installation, not only in the drawing.<\/h2>\n<p>Use the model\u2019s S value when positioning the hubs. An arbitrary gap can change how the flexible ring sits and can reduce the value of the specified alignment limits. After tightening the machines, re-check the gap and alignment.<\/p>\n<p><a class=\"ep-text-link\" href=\"https:\/\/nm-coupling.net\/nl\/products\/\">Open the complete NM dimension table \u2192<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>The NM dimension letters answer different fit questions: outside envelope, hub diameter, bore capacity, axial length and assembly separation.<\/p>","protected":false},"featured_media":0,"template":"","class_list":["post-916","ep_nm_article","type-ep_nm_article","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/nm-coupling.net\/nl\/wp-json\/wp\/v2\/ep_nm_article\/916","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nm-coupling.net\/nl\/wp-json\/wp\/v2\/ep_nm_article"}],"about":[{"href":"https:\/\/nm-coupling.net\/nl\/wp-json\/wp\/v2\/types\/ep_nm_article"}],"wp:attachment":[{"href":"https:\/\/nm-coupling.net\/nl\/wp-json\/wp\/v2\/media?parent=916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}