{"id":20171,"date":"2020-11-25T06:09:34","date_gmt":"2020-11-25T06:09:34","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=20171"},"modified":"2020-11-25T06:09:45","modified_gmt":"2020-11-25T06:09:45","slug":"peering-the-world-of-bearings-from-the-perspective-of-numbers","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/ko\/peering-the-world-of-bearings-from-the-perspective-of-numbers\/","title":{"rendered":"\uc22b\uc790\uc758 \uad00\uc810\uc5d0\uc11c \ubca0\uc5b4\ub9c1\uc758 \uc138\uacc4 \ub4e4\uc5ec\ub2e4\ubcf4\uae30"},"content":{"rendered":"

\ud06c\uae30\ub294 2mm\uc5d0\uc11c 6m\uae4c\uc9c0 \ub2e4\uc591\ud569\ub2c8\ub2e4.<\/strong><\/strong><\/h2>

Bearings vary in size from small to large. The smallest “miniature bearing” in the world is 0.6 mm in inner diameter, 2.0 mm in outer diameter and 0.8 mm in thickness. Large bearings, with an outer diameter of 6 meters and a weight of more than 15 tons, are used in large shield machines for tunneling. This type of shield machine was used in the excavation of a cross sea tunnel under the Dover Strait, which connects Britain and France, and this large bearing was used.<\/strong><\/strong><\/p>

400000rpm<\/strong><\/strong><\/h2>

Dental drill (commonly known as dental handpiece) is equipped with a bearing that can rotate at a super high speed. These are two ultra precision bearings with inner diameter of 3.0 mm \u00d7 outer diameter of 6.0 mm \u00d7 width of 2 mm and steel ball diameter of 1.0 mm. They can rotate at an amazing speed of “400000 revolutions per minute”, which greatly reduces the vibration of dental handpieces and greatly reduces the pain of patients during treatment.<\/strong><\/strong><\/p>

\"\"<\/figure>

\uc1e0\uad6c\uc2ac\uc758 \uc18d\ub3c4\ub294 \ucd08\uc18d 160\ubbf8\ud130<\/strong><\/strong><\/h2>

\uad6d\uc81c \uc5ec\uac1d\uae30\uc758 V2500 \uc81c\ud2b8 \uc5d4\uc9c4\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uc8fc\ucd95 \ubca0\uc5b4\ub9c1\uc740 \ud68c\uc804 \uc18d\ub3c4\uac00 \ucd08\ub2f9 160m\ub85c \uc2dc\uc18d 580km\uc5d0 \ud574\ub2f9\ud569\ub2c8\ub2e4. \uace0\uc131\ub2a5 \uace0\uc18d\ubca0\uc5b4\ub9c1\uc744 \uc0ac\uc6a9\ud588\uae30 \ub54c\ubb38\uc5d0 \uc5d4\uc9c4\uc774 \uc624\ub7ab\ub3d9\uc548 \uc548\uc804\ud558\uac8c \uc791\ub3d9\ud558\uace0 \uc2b9\uac1d\uc744 \uc138\uacc4 \uacf3\uacf3\uc73c\ub85c \uc548\uc804\ud558\uac8c \uc218\uc1a1\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/strong><\/strong><\/p>

100nm \ubbf8\ub9cc\uc758 \uc9c4\ud3ed<\/strong><\/strong><\/h2>

It is no exaggeration that “the accuracy of the machine depends on the rotation accuracy of the bearing”. The two ends of the rotating shaft are supported by two bearings. If the shaking of the axis is large, the mechanical performance cannot be improved. Wechat of metal processing has good content and deserves attention. The “hard disk”, a computer external storage device with ultra precision bearings, has an axial amplitude of less than 100 nm (1 nm = 1 \/ 1000000 mm). The key to achieve such ultra-high precision is the accuracy of rolling elements such as “steel ball” and “roller”.<\/strong><\/strong><\/p>

\"\"<\/figure>

15\ub144 \ub3d9\uc548 \uc6b0\uc8fc\uc5d0\uc11c \uc77c\ud558\ub2e4<\/strong><\/strong><\/h2>

\uc6b0\uc8fc\uc758 \ubc1c\uc804\uc740 \ubca0\uc5b4\ub9c1\uacfc \ubd88\uac00\ubd84\uc758 \uad00\uacc4\uc785\ub2c8\ub2e4. \uc77c\uae30 \uc608\ubcf4, \uc704\uc131 \ub77c\ub514\uc624 \ubc0f \ud154\ub808\ube44\uc804 \uc2e0\ud638, \uc790\ub3d9\ucc28 \uc704\uc131 \uc704\uce58 \uc815\ubcf4 \ub4f1\uc740 \uc9c0\uad6c \uc8fc\uc704\ub97c \ube44\ud589\ud558\ub294 \uc704\uc131\uc5d0 \uc758\ud574 \uc81c\uacf5\ub429\ub2c8\ub2e4. \uc704\uc131\uc5d0\ub294 \uc704\uc131\uc758 \uc790\uc138\uc640 \uc9c4\ub85c\ub97c \uc720\uc9c0\ud558\uae30 \uc704\ud55c \uc790\uc774\ub85c\uc2a4\ucf54\ud504\uac00 \uc7a5\ucc29\ub418\uc5b4 \uc788\uc73c\uba70, \uc790\uc774\ub85c\uc2a4\ucf54\ud504\uc5d0\ub294 \ucd08\uc815\ubc00 \ubca0\uc5b4\ub9c1\uc774 \uc7a5\ucc29\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc885\ub958\uc758 \ubca0\uc5b4\ub9c1\uc740 15\ub144 \ub3d9\uc548 \uc6b0\uc8fc\uc5d0\uc11c \uc9c0\uc18d\uc801\uc73c\ub85c \uc791\ub3d9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/strong><\/strong><\/p>

\uc601\ud558 253\ub3c4\uc5d0\uc11c \uc601\ud558 500\ub3c4\uc758 \uc138\uacc4<\/strong><\/strong><\/h2>

\uc6b0\uc8fc \ub85c\ucf13\uc758 \uc561\uccb4 \uc5f0\ub8cc \ud38c\ud504\uc758 \ubca0\uc5b4\ub9c1\uc740 \uc628\ub3c4\uac00 \uac00\uc7a5 \ub0ae\uc740 \ubca0\uc5b4\ub9c1\uc785\ub2c8\ub2e4. \ubca0\uc5b4\ub9c1\uc740 \uc601\ud558 253\u2103\uc758 \uc561\uccb4 \uc218\uc18c\uc5d0\uc11c \uc791\ub3d9\ud569\ub2c8\ub2e4. \uc758\ub8cc\uc6a9 CT \uc2a4\uce90\ub108\uc5d0 \uc0ac\uc6a9\ub418\ub294 \ud2b9\uc218 \uace0\uc131\ub2a5 \ubca0\uc5b4\ub9c1\uc740 \uace0\uc628 \ud658\uacbd\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \ub300\ud45c\uc801\uc778 \ubca0\uc5b4\ub9c1\uc785\ub2c8\ub2e4. \ucd5c\ub300 300~500\u2103\uc758 X\uc120 \uc9c4\uacf5\uad00\uc5d0\uc11c \ubca0\uc5b4\ub9c1\ub3c4 \uacc4\uc18d \uc791\ub3d9\ud558\uc5ec \uc6b0\ub9ac\uc758 \uac74\uac15\uc744 \ubcf4\ud638\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/strong><\/strong><\/p>

\"\"<\/figure>

<\/p><\/div>","protected":false},"excerpt":{"rendered":"

Sizes range from 2 mm to 6 m Bearings vary in size from small to large. The smallest “miniature bearing” in the world is 0.6 mm in inner diameter, 2.0 mm in outer diameter and 0.8 mm in thickness. Large bearings, with an outer diameter of 6 meters and a weight of more than 15…<\/p>","protected":false},"author":2,"featured_media":20174,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"class_list":["post-20171","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-weekly"],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2020\/11\/\u56fe\u72476.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/posts\/20171","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/comments?post=20171"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/posts\/20171\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/media\/20174"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/media?parent=20171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/categories?post=20171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ko\/wp-json\/wp\/v2\/tags?post=20171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}