{"id":420,"date":"2020-08-13T02:07:49","date_gmt":"2020-08-13T02:07:49","guid":{"rendered":"https:\/\/parfaite.com\/?page_id=420"},"modified":"2026-06-18T09:51:03","modified_gmt":"2026-06-18T01:51:03","slug":"taper-accuracy","status":"publish","type":"page","link":"https:\/\/parfaite.com\/en\/technology-center\/taper-accuracy\/","title":{"rendered":"TAPER ACCURACY"},"content":{"rendered":"<p>Shank accuracy refers to the close tolerance of the shank of the tool holder and the inner hole of the spindle. This tolerance level is divided into 12 levels from AT 1 to AT 12. The higher the shank tolerance level, the closer the shank of the tool holder is to the inner hole of the spindle. For example, AT3, which has an area of 85%, is better than AT4. According to the standard recommendation of ISO1947, AT3 is the most basic requirement for the shank of a tool holder.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u67c4\u90e8\u7cbe\u5ea6\u662f\u6307\u5200\u67c4\u67c4\u90e8\u8207\u4e3b\u8ef8\u5167\u5b54\u4e4b\u5bc6\u5408\u5ea6\u516c\u5dee\uff0c\u6b64\u516c\u5dee\u7b49\u7d1a\u5171\u5206\u70ba AT 1 \u81f3 AT 12 \u5171 12 \u7b49\u7d1a\u3002 \u67c4\u90e8 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3987,"parent":324,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"single-technology-center.blade.php","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"class_list":["post-420","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u67c4\u90e8\u7cbe\u5ea6 - \u666e\u6167 Parfaite Tools<\/title>\n<meta name=\"description\" content=\"\u6df1\u5165\u4e86\u89e3\u4e3b\u8ef8\u9310\u5ea6\u7cbe\u5ea6\u5728 CNC \u52a0\u5de5\u4e2d\u7684\u91cd\u8981\u6027\u3002\u9032\u4e00\u6b65\u63a2\u7d22\u666e\u6167\uff08PARFAITE\uff09\u5982\u4f55\u78ba\u4fdd\u5200\u687f\u9054\u5230\u6700\u4f73\u63a5\u89f8\u9762\u8207\u525b\u6027\u8868\u73fe\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/parfaite.com\/en\/technology-center\/taper-accuracy\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u67c4\u90e8\u7cbe\u5ea6 - 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