{"id":6161,"date":"2023-09-09T18:25:23","date_gmt":"2023-09-09T23:25:23","guid":{"rendered":"https:\/\/www.summet.com\/blog\/?p=6161"},"modified":"2023-09-09T18:25:23","modified_gmt":"2023-09-09T23:25:23","slug":"bearing-replacement-on-an-ioptron-cube-e-8500-alt-az-telescope-mount","status":"publish","type":"post","link":"https:\/\/www.summet.com\/blog\/2023\/09\/09\/bearing-replacement-on-an-ioptron-cube-e-8500-alt-az-telescope-mount\/","title":{"rendered":"Bearing Replacement on an iOptron Cube E 8500 Alt\/Az Telescope mount"},"content":{"rendered":"<p>I had to replace one of the Alt bearings in my Cube E mount (it was &#8220;grinding&#8221; and causing star trails at 1-5 second exposure times due to vibration).\u00a0 I made a video of the procedure here:<\/p>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/TrKLkgV_WYM?si=TkryptkhAwRj_Wcm\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><a class=\"bbc_url\" title=\"External link\" href=\"https:\/\/www.youtube.com\/watch?v=TrKLkgV_WYM\" rel=\"nofollow external\">https:\/\/www.youtube&#8230;.h?v=TrKLkgV_WYM<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>The iOptron Cube E 8500 that I have uses 2 sizes of bearings:<\/p>\n<p>&nbsp;<\/p>\n<p>1x\u00a0\u00a0 6804z bearing (20x32x7mm) for the Alt axle closest to the telescope.<\/p>\n<p>3x\u00a0 6803z bearings (17x26x5mm) for the ALT axle nearest the &#8220;lock&#8221; handscrew<br \/>\nand for both the top and bottom of the AZ axis in the bottom.<\/p>\n<p>I purchased and used <a href=\"https:\/\/amzn.to\/3r6kWvY\">this NSK brand bearing<\/a>.<\/p>\n<p>You&#8217;ll also want a 14mm or 9\/16th box end wrench to remove the AZ axis bolt head if you need to access the bottom.<\/p>\n<p>Before\/After results (click to enlarge):<\/p>\n<p><a href=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/10-sec-exposures-before-and-after.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-6162\" src=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/10-sec-exposures-before-and-after-1024x576.jpg\" alt=\"\" width=\"584\" height=\"329\" srcset=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/10-sec-exposures-before-and-after-1024x576.jpg 1024w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/10-sec-exposures-before-and-after-300x169.jpg 300w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/10-sec-exposures-before-and-after-768x432.jpg 768w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/10-sec-exposures-before-and-after-1536x864.jpg 1536w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/10-sec-exposures-before-and-after-500x281.jpg 500w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/10-sec-exposures-before-and-after.jpg 1920w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/5-sec-exposures-before-and-after.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-6163\" src=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/5-sec-exposures-before-and-after-1024x576.jpg\" alt=\"\" width=\"584\" height=\"329\" srcset=\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/5-sec-exposures-before-and-after-1024x576.jpg 1024w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/5-sec-exposures-before-and-after-300x169.jpg 300w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/5-sec-exposures-before-and-after-768x432.jpg 768w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/5-sec-exposures-before-and-after-1536x864.jpg 1536w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/5-sec-exposures-before-and-after-500x281.jpg 500w, https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2023\/09\/5-sec-exposures-before-and-after.jpg 1920w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><span hidden class=\"__iawmlf-post-loop-links\" data-iawmlf-links=\"[{&quot;id&quot;:75,&quot;href&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=TrKLkgV_WYM&quot;,&quot;archived_href&quot;:&quot;https:\\\/\\\/web-wp.archive.org\\\/web\\\/20260415025316\\\/https:\\\/\\\/www.youtube.com\\\/watch?v=TrKLkgV_WYM&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[{&quot;date&quot;:&quot;2026-04-15 21:12:32&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-04-29 15:00:55&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-04 04:35:26&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-12 13:45:13&quot;,&quot;http_code&quot;:206},{&quot;date&quot;:&quot;2026-05-16 11:25:10&quot;,&quot;http_code&quot;:206}],&quot;broken&quot;:false,&quot;last_checked&quot;:{&quot;date&quot;:&quot;2026-05-16 11:25:10&quot;,&quot;http_code&quot;:206},&quot;process&quot;:&quot;done&quot;},{&quot;id&quot;:76,&quot;href&quot;:&quot;https:\\\/\\\/amzn.to\\\/3r6kWvY&quot;,&quot;archived_href&quot;:&quot;&quot;,&quot;redirect_href&quot;:&quot;https:\\\/\\\/www.amazon.com\\\/gp\\\/product\\\/B0964WZHVL?ie=UTF8\\u0026psc=1\\u0026linkCode=sl1\\u0026tag=burningorg-20\\u0026linkId=1c9fe27023594ee363c0fa3847ebe450\\u0026language=en_US\\u0026ref_=as_li_ss_tl&quot;,&quot;checks&quot;:[],&quot;broken&quot;:false,&quot;last_checked&quot;:null,&quot;process&quot;:&quot;done&quot;}]\"><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I had to replace one of the Alt bearings in my Cube E mount (it was &#8220;grinding&#8221; and causing star trails at 1-5 second exposure times due to vibration).\u00a0 I made a video of the procedure here: https:\/\/www.youtube&#8230;.h?v=TrKLkgV_WYM &nbsp; The &hellip; <a href=\"https:\/\/www.summet.com\/blog\/2023\/09\/09\/bearing-replacement-on-an-ioptron-cube-e-8500-alt-az-telescope-mount\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[151],"class_list":["post-6161","post","type-post","status-publish","format-standard","hentry","category-projects","tag-ioptron"],"_links":{"self":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts\/6161","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/comments?post=6161"}],"version-history":[{"count":1,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts\/6161\/revisions"}],"predecessor-version":[{"id":6164,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/posts\/6161\/revisions\/6164"}],"wp:attachment":[{"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/media?parent=6161"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/categories?post=6161"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.summet.com\/blog\/wp-json\/wp\/v2\/tags?post=6161"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}