{"id":1280,"date":"2026-09-10T06:38:41","date_gmt":"2026-09-10T06:38:41","guid":{"rendered":"https:\/\/nmcouplings.top\/how-to-measure-coupling-bore-and-keyway\/"},"modified":"2026-09-10T06:38:41","modified_gmt":"2026-09-10T06:38:41","slug":"how-to-measure-coupling-bore-and-keyway","status":"publish","type":"post","link":"https:\/\/nmcouplings.top\/fa\/how-to-measure-coupling-bore-and-keyway\/","title":{"rendered":"\u0646\u062d\u0648\u0647 \u0627\u0646\u062f\u0627\u0632\u0647\u200c\u06af\u06cc\u0631\u06cc \u0633\u0648\u0631\u0627\u062e \u06a9\u0648\u067e\u0644\u06cc\u0646\u06af \u0648 \u0634\u06cc\u0627\u0631 \u06a9\u0644\u06cc\u062f"},"content":{"rendered":"<p>For a replacement coupling, \u201csame as the old one\u201d is not a dimension. Measure the shaft or use the equipment drawing. Do this on both sides; motor and driven shafts are often different.<\/p>\n<h2>Record these dimensions<\/h2>\n<div class=\"ep-table-wrap\">\n<table class=\"ep-data-table\">\n<thead>\n<tr>\n<th>\u0645\u0648\u0631\u062f<\/th>\n<th>\u0686\u06cc \u0631\u0648 \u062a\u0627\u06cc\u06cc\u062f \u06a9\u0631\u062f\u0646<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Shaft diameter<\/td>\n<td>Measure the actual shaft; note the unit and required fit if controlled.<\/td>\n<\/tr>\n<tr>\n<td>Keyway width and depth<\/td>\n<td>Use the shaft drawing where possible. If measured, state that the values are field measurements.<\/td>\n<\/tr>\n<tr>\n<td>Hub length available<\/td>\n<td>Check shoulders, seals, guards and nearby equipment.<\/td>\n<\/tr>\n<tr>\n<td>Shaft end position<\/td>\n<td>Note how far the shaft enters the hub and any axial gap requirement.<\/td>\n<\/tr>\n<tr>\n<td>Setscrew or locking detail<\/td>\n<td>Photograph and dimension it if the replacement must match an existing arrangement.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>Why a photo is not enough<\/h2>\n<p>Perspective can make a 28 mm and 30 mm bore look identical, and an assembled guard can hide the hub length. Photos are excellent for identifying construction and damage; dimensions are what make the part fit.<\/p>\n<div class=\"ep-inline-cta\">\n<h2>\u062f\u0631\u062e\u0648\u0627\u0633\u062a \u0642\u06cc\u0645\u062a \u06a9\u0648\u067e\u0644\u06cc\u0646\u06af NM<\/h2>\n<p>\u0627\u0646\u062f\u0627\u0632\u0647\u060c \u0633\u0631\u0639\u062a\u060c \u0648\u0638\u06cc\u0641\u0647 \u0648 \u0645\u0642\u062f\u0627\u0631 \u0634\u0641\u062a \u0631\u0627 \u0627\u0631\u0633\u0627\u0644 \u06a9\u0646\u06cc\u062f. \u0645\u0627 \u0642\u0628\u0644 \u0627\u0632 \u0627\u0631\u0627\u0626\u0647 \u0642\u06cc\u0645\u062a\u060c \u0645\u062f\u0644 \u0648 \u062c\u0632\u0626\u06cc\u0627\u062a \u0645\u0627\u0634\u06cc\u0646\u06a9\u0627\u0631\u06cc \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u062e\u0648\u0627\u0647\u06cc\u0645 \u06a9\u0631\u062f.<\/p>\n<p><a class=\"ep-btn\" href=\"https:\/\/nmcouplings.top\/fa\/contact\/#rfq\">\u0627\u0631\u0633\u0627\u0644 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u0627\u0633\u062a\u0639\u0644\u0627\u0645 (RFQ)<\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>\u06cc\u06a9 \u0686\u06a9 \u0644\u06cc\u0633\u062a \u0627\u0646\u062f\u0627\u0632\u0647\u200c\u06af\u06cc\u0631\u06cc \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc \u0628\u0631\u0627\u06cc \u0633\u0648\u0631\u0627\u062e\u200c\u0647\u0627\u06cc \u06a9\u0648\u067e\u0644\u06cc\u0646\u06af\u060c \u0634\u06cc\u0627\u0631\u0647\u0627\u06cc \u06a9\u0644\u06cc\u062f \u0648 \u0641\u0636\u0627\u06cc \u062a\u0648\u067e\u06cc.<\/p>","protected":false},"author":1,"featured_media":1305,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/posts\/1280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/comments?post=1280"}],"version-history":[{"count":3,"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/posts\/1280\/revisions"}],"predecessor-version":[{"id":1426,"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/posts\/1280\/revisions\/1426"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/media\/1305"}],"wp:attachment":[{"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/media?parent=1280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/categories?post=1280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nmcouplings.top\/fa\/wp-json\/wp\/v2\/tags?post=1280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}