{"id":6577,"date":"2026-01-23T07:34:53","date_gmt":"2026-01-23T06:34:53","guid":{"rendered":"https:\/\/kammerer-gewinde.zold.at\/lexicon\/accuracy-classes\/"},"modified":"2026-04-14T14:05:32","modified_gmt":"2026-04-14T12:05:32","slug":"accuracy-classes","status":"publish","type":"lexicon","link":"https:\/\/kammerer-gewinde.zold.at\/en\/lexicon\/accuracy-classes\/","title":{"rendered":"Accuracy Classes"},"content":{"rendered":"\n<p>Accuracy classes are standardized categories that define the precision with which a mechanical component is manufactured. They specify the tolerances\u2014the permissible deviations from ideal dimensions or functions\u2014that a part may have. The smaller the tolerances, the higher the accuracy class. For thread drives (e.g., ball screws, trapezoidal screws, spindles, nuts), accuracy classes primarily define:   <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Lead accuracy (deviation of the actual lead from the ideal lead) <\/li>\n\n\n\n<li>Geometric and positional tolerances (e.g., roundness, straightness, coaxiality)<\/li>\n\n\n\n<li>Backlash or preload accuracy<\/li>\n\n\n\n<li>Axial positioning accuracy<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">Typical Accuracy Classes for Thread Drives<\/h3>\n\n<p>Manufacturers usually use internationally standardized designations. For ball screws, for example, the following classes apply: <\/p>\n\n<p><strong>IT0 \/ IT1<\/strong> extremely high precision, only a few micrometers of deviation: measuring machines, precision axes<br\/><strong>IT3<\/strong> very high accuracy: CNC machines, machine tools<br\/><strong>IT5<\/strong> medium accuracy: automation, robotics<br\/><strong>IT7 \/ IT10<\/strong> standard class: general linear movements, simple positioning<\/p>\n\n<p>The smaller the number, the more precise the spindle.<\/p>\n\n<p>Not every application requires maximum precision. For a simple lifting axis, a lower accuracy class is sufficient, whereas extremely low lead deviations are necessary in CNC machining or measuring systems. This allows designers to select components specifically based on costs and requirements.  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Accuracy classes are standardized categories that define the precision with which a mechanical component is manufactured. They specify the tolerances\u2014the permissible deviations from ideal dimensions or functions\u2014that a part may have. The smaller the tolerances, the higher the accuracy class. For thread drives (e.g., ball screws, trapezoidal screws, spindles, nuts), accuracy classes primarily define: Typical [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"lexiconkategorie":[],"class_list":["post-6577","lexicon","type-lexicon","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/kammerer-gewinde.zold.at\/en\/wp-json\/wp\/v2\/lexicon\/6577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kammerer-gewinde.zold.at\/en\/wp-json\/wp\/v2\/lexicon"}],"about":[{"href":"https:\/\/kammerer-gewinde.zold.at\/en\/wp-json\/wp\/v2\/types\/lexicon"}],"wp:attachment":[{"href":"https:\/\/kammerer-gewinde.zold.at\/en\/wp-json\/wp\/v2\/media?parent=6577"}],"wp:term":[{"taxonomy":"lexiconkategorie","embeddable":true,"href":"https:\/\/kammerer-gewinde.zold.at\/en\/wp-json\/wp\/v2\/lexiconkategorie?post=6577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}