{"id":964,"date":"2010-03-25T23:56:08","date_gmt":"2010-03-26T04:56:08","guid":{"rendered":"http:\/\/thmsblog.tedatum.com\/?p=964"},"modified":"2010-03-26T10:51:20","modified_gmt":"2010-03-26T15:51:20","slug":"boy-whata-drag","status":"publish","type":"post","link":"https:\/\/blog.thehobbyistmachineshop.com\/?p=964","title":{"rendered":"Boy! Whata&#8217; Drag"},"content":{"rendered":"<!-- index.php -->\n<div\n\tclass=\"ngg-galleryoverview ngg-ajax-pagination-none\"\n\tid=\"ngg-gallery-c2060efd4921597e68d4db5b3aacfec6-1\">\n\n    \t<div class=\"slideshowlink\">\n        <a href='https:\/\/blog.thehobbyistmachineshop.com\/index.php\/nggallery\/slideshow?p=964'>[Show as slideshow]<\/a>\n\t\t\n\t<\/div>\n\t\t\t<!-- Thumbnails -->\n\t\t\t\t<div id=\"ngg-image-0\" class=\"ngg-gallery-thumbnail-box\" >\n\t\t\t\t        <div class=\"ngg-gallery-thumbnail\">\n            <a href=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/hb2bearings\/xybearings-2.jpg\"\n               title=\"\"\n               data-src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/hb2bearings\/xybearings-2.jpg\"\n               data-thumbnail=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/hb2bearings\/thumbs\/thumbs_xybearings-2.jpg\"\n               data-image-id=\"75\"\n               data-title=\"xybearings-2\"\n               data-description=\"\"\n               data-image-slug=\"xybearings-2\"\n               class=\"ngg-fancybox\" rel=\"c2060efd4921597e68d4db5b3aacfec6\">\n                <img\n                    title=\"xybearings-2\"\n                    alt=\"xybearings-2\"\n                    src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/hb2bearings\/thumbs\/thumbs_xybearings-2.jpg\"\n                    width=\"100\"\n                    height=\"100\"\n                    style=\"max-width:100%;\"\n                \/>\n            <\/a>\n        <\/div>\n\t\t\t\t\t\t\t<\/div> \n\t\t\t\n        \n\t\t\t\t<div id=\"ngg-image-1\" class=\"ngg-gallery-thumbnail-box\" >\n\t\t\t\t        <div class=\"ngg-gallery-thumbnail\">\n            <a href=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/hb2bearings\/xybearings.jpg\"\n               title=\"\"\n               data-src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/hb2bearings\/xybearings.jpg\"\n               data-thumbnail=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/hb2bearings\/thumbs\/thumbs_xybearings.jpg\"\n               data-image-id=\"76\"\n               data-title=\"xybearings\"\n               data-description=\"\"\n               data-image-slug=\"xybearings\"\n               class=\"ngg-fancybox\" rel=\"c2060efd4921597e68d4db5b3aacfec6\">\n                <img\n                    title=\"xybearings\"\n                    alt=\"xybearings\"\n                    src=\"https:\/\/blog.thehobbyistmachineshop.com\/wp-content\/gallery\/hb2bearings\/thumbs\/thumbs_xybearings.jpg\"\n                    width=\"100\"\n                    height=\"100\"\n                    style=\"max-width:100%;\"\n                \/>\n            <\/a>\n        <\/div>\n\t\t\t\t\t\t\t<\/div> \n\t\t\t\n        \n\t\t\n\t\t<!-- Pagination -->\n\t<div class='ngg-clear'><\/div>\t<\/div>\n\n<p>Here are the pictures of both pair of Y axis bearings. The drag I suspected wasn&#8217;t on the outside\u00a0case edge but right in the middle of the shields. I most likely started this problem when I was experimenting with end thrust. I have replaced these but not tested the new bearings\u00a0yet. I&#8217;ll do that this weekend.<\/p>\n<p>I found a source for some 1\/16&#8243; \u00a0thin solid thrust washers if I have to use them. They are available in several types of material and the center hole is very accurate.<\/p>\n<p>One shield shown here\u00a0is actually dented. I don&#8217;t know what caused that but it had to be a very\u00a0hard stop or tapping on the bearing. This was also on the Y axis screw shaft that was factory supplied turned slightly undersized (loose rather than slip bearing fit.)<\/p>\n<p>I also note the scraping is not 360 degrees on the bearings. That indicates some shaft\/bearing misalignment. That is a big clue.<\/p>\n<p>The lesson learned is to keep the preload as close to zero as possible. Mine were and are now set where I can turn the holding screws at their heads\u00a0and the nylon lock nuts will turn if they are not held. I have had them a bit tighter when I first set up the machine, which I soon discovered is incorrect. A thin thrust washer may have prevented the digging in scrape. I&#8217;ll also make sure the end cover (pressure) plate holding screws are adjusted equally side to side\u00a0(a part of bearing alignment).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here are the pictures of both pair of Y axis bearings. The drag I suspected wasn&#8217;t on the outside\u00a0case edge but right in the middle of the shields. I most likely started this problem when I was experimenting with end thrust. I have replaced these but not tested the new bearings\u00a0yet. I&#8217;ll do that this [&hellip;]<\/p>\n","protected":false},"author":77778,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[35],"tags":[138,24],"_links":{"self":[{"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/posts\/964"}],"collection":[{"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/users\/77778"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=964"}],"version-history":[{"count":0,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=\/wp\/v2\/posts\/964\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.thehobbyistmachineshop.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}