{"id":4939,"date":"2024-03-15T04:10:22","date_gmt":"2024-03-14T20:10:22","guid":{"rendered":"https:\/\/www.xzballbearing.com\/?p=4939"},"modified":"2024-04-12T14:18:00","modified_gmt":"2024-04-12T06:18:00","slug":"2024-march-3rd-week-xbrz-news-recommendation-ntn-supplies-bearings-to-h3-launch-vehicle","status":"publish","type":"post","link":"https:\/\/www.xzballbearing.com\/it\/2024-march-3rd-week-xbrz-news-recommendation-ntn-supplies-bearings-to-h3-launch-vehicle\/","title":{"rendered":"2024\u00a0March 3rd\u00a0Week XZBRG News Recommendation\u00a0– NTN Supplies Bearings to \u201cH3 Launch Vehicle\u201d"},"content":{"rendered":"
\n

Supply all bearings for turbo pumps with ultra-high speed rotational performance under cryogenic environment<\/p>\n

NTN Corporation (hereafter, NTN) supplies all bearings for turbo pumps of engine in the second H3 Launch Vehicle (H3TF2: Test Flight No.2) launched from Tanegashima Space Center at 9:22:55 (JST) on February 17.<\/p>\n

In order for a rocket mounted with satellites or other objects to fly, it is necessary to burn liquid hydrogen and liquid oxygen at high pressure to inject a large amount of gas. Turbo pumps feed fuel of liquid hydrogen and oxidizer of liquid oxygen oxidizer into the combustion chamber of the engine by rotating inner impeller at high speed.<\/p>\n

Bearings used in the impeller support ultra-high speed rotation of rocket that is comparable to a jet aircraft with a dmn value*1 of approx. 2.8 million even in cryogenic environment of liquid hydrogen (-253\u2103) and liquid oxygen (-183\u2103). General lubricants including oil and grease got frozen at cryogenic temperatures, so the bearings adopt NTN’s proprietary solid lubricant that demonstrates lubricating performance even at cryogenic temperatures. In addition, the bearings also use high-strength retainer made from reinforced fiberglass to meet these harsh environment.<\/p>\n

The engine of the \u201cH3 Launch Vehicle\u201d has a higher driving force than one of the preceding model of \u201cH-IIA Launch Vehicle,\u201d in order to launch satellites of various sizes. Thus, each component is required to have high rigidity, and the bearings for \u201cH3 Launch Vehicle\u201d turbo pumps are also designed to have larger diameters so that they can receive greater preload. As bearings become larger in diameter, the centrifugal force of balls used in bearings becomes larger. For this reason, NTN applies rolling elements (balls) made from ceramics for bearings. It is the first time to apply ceramics balls for commercial rockets produced in Japan. The use of ceramics balls, which is more lightweight than balls made from metal, suppresses the centrifugal force of balls during rotating and achieves high speed rotational performance with dmn value 2.88 million.<\/p>\n

NTN has been supplying bearings to a number of rockets produced in Japan for many years, including \u201cH-I Launch Vehicle\u201d launched in 1986, \u201cH-II Launch Vehicle\u201d and \u201cH-IIA Launch Vehicle.\u201d As NTN products are highly evaluated in the aviation field as well, NTN has been supplying bearings to major global jet engine manufacturers.<\/p>\n

NTN will continue to contribute to the development of the aerospace field by developing and providing high quality and high performance products used in space.<\/p>\n

An indicator that expresses the rotational performance of bearings and it is multiplied bearing pitch circle diameter (mm) by rotational speed (min-1)<\/p>\n

NTN’s history in aerospace field<\/p>\n

1986<\/p>\n

NTN constructed Japan’s first plant exclusively for aerospace bearings (Kuwana Works, in Mie Prefecture)<\/p>\n

\u201cH-I Launch Vehicle\u201d No.1 was launched (adopting NTN’s bearings)<\/p>\n

1994<\/p>\n

\u201cH-II Launch Vehicle\u201d No.1 was launched (adopting NTN’s bearings)<\/p>\n

2001<\/p>\n

\u201cH-IIA Launch Vehicle\u201d No.1 was launched (adopting NTN’s bearings)<\/p>\n

2003<\/p>\n

NTN acquired aerospace quality management standard JIS Q 9100 for the first time as Japanese bearing manufacturer<\/p>\n

Asteroid probe \u201cHayabusa (MUSES-C)\u201d was launched (adopting NTN’s bearings)<\/p>\n

2006<\/p>\n

\u201cH-IIA Launch Vehicle\u201d No.11 mounted with Engineering Test Satellite \u201cKiku No.8\u201d was launched (both \u201cKiku No.8\u201d and \u201cH-IIA Launch Vehicle\u201d adopt NTN’s bearings)<\/p>\n

2009<\/p>\n

\u201cH-IIB Launch Vehicle\u201d No.1 was launched (adopting NTN’s bearings)<\/p>\n

2010<\/p>\n

Asteroid probe \u201cHayabusa (MUSES-C)\u201d returned to the earth, and NTN awarded a certificate of gratitude from the Minister of Education, Culture, Sports, Science and Technology in recognition of project success<\/p>\n

2014<\/p>\n

\u201cH-IIA Launch Vehicle\u201d No.26 mounted with Asteroid probe \u201cHayabusa2\u201d was launched (both \u201cHayabusa2\u201d and \u201cH-IIA Launch Vehicle\u201d adopt NTN’s bearings)<\/p>\n

2024<\/p>\n

The second \u201cH3 Launch Vehicle (H3TF2: Test Flight No.2)\u201d was launched (adopting NTN’s bearings)<\/p>\n

 <\/p>\n<\/div>\n

(https:\/\/www.ntnglobal.com)<\/span><\/div>\n

\u00a0<\/b><\/strong><\/h1>\n

More About <\/b><\/strong>XZBRG<\/b><\/u><\/strong><\/a>:<\/b><\/strong><\/p>\n

Xinzhou Bearing Industrial Inc.\u00a0is one of the Custom Bearing Manufacturer and world wide Distributors of all types of Bearings,specializing in Ball, Needle, and Roller types (Inch and Metric Sizes) made from Ceramic (Si3N4\/ZrO2), Stainless (440c\/316) or Chrome Steel(SAE52100 steel); Tolerance ABEC1, 3, 5, 7.level.<\/p>\n

We work directly with our OEMs and Bearing Distributors. Our engineers can help you with bearing, shaft and housing tolerances as well as semiconductor applications, cryogenic applications, extreme hostile environments, and extreme\u00a0 temperatures environments.<\/p>\n

We also stock other manufacturer\u2019s bearings. We distribute bearings for extreme high temperature. We can help design\/manufacture any bearing.<\/p>\n

\u00a0<\/b><\/strong><\/p>\n

202<\/b><\/strong>4<\/b><\/strong>\u00a0New Week <\/b><\/strong>XZBRG<\/b><\/u><\/strong><\/a>\u00a0Product Recommendation:<\/b><\/strong><\/p>\n

Flanged Ball Bearings<\/b><\/u><\/strong>\uff1a<\/b><\/u><\/strong><\/a><\/p>\n

Flanged ball bearings have a solid steel flange on the outer ring. This allows the bearing to be more easily located in a housing. The flange can also help to prevent axial movement of the bearing in the event of a thrust load on the bearing. It is easier to maintain the position of a flanged bearing in the housing where a lot of vibration is present.<\/p>\n

http:\/\/xinzhou.bearingshow.net\/product-cat\/flanged-ball-bearings\/<\/u><\/a><\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

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

Supply all bearings for turbo pumps with ultra-high speed rotational performance under cryogenic environment NTN Corporation (hereafter, NTN) supplies all bearings for turbo pumps of engine in the second H3 Launch Vehicle (H3TF2: Test Flight No.2) launched from Tanegashima Space Center at 9:22:55 (JST) on February 17. In order for a rocket mounted with satellites […]<\/p>","protected":false},"author":1,"featured_media":4932,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3121],"tags":[],"table_tags":[],"class_list":["post-4939","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"_links":{"self":[{"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/posts\/4939"}],"collection":[{"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/comments?post=4939"}],"version-history":[{"count":3,"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/posts\/4939\/revisions"}],"predecessor-version":[{"id":4949,"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/posts\/4939\/revisions\/4949"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/media\/4932"}],"wp:attachment":[{"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/media?parent=4939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/categories?post=4939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/tags?post=4939"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/www.xzballbearing.com\/it\/wp-json\/wp\/v2\/table_tags?post=4939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}