翻訳と辞書 Words near each other ・ Multi-frequency signaling ・ Multi-frequency time division multiple access ・ Multi-fuel stove ・ Multi-function display ・ Multi-function printer ・ Multi-function structure ・ Multi-Functional Transport Satellite ・ Multi-gigabit transceiver ・ Multi-Gun ・ Multi-headed ・ Multi-Housing News ・ Multi-hyphenate ・ Multi-image ・ Multi-index notation ・ Multi-instrumentalist ・ Multi-jackbolt tensioner ・ Multi-junction solar cell ・ Multi-key quicksort ・ Multi-label classification ・ Multi-Lamellar Emulsion ・ Multi-lane free flow in Malaysia ・ Multi-layer CCD ・ Multi-layer insulation ・ Multi-leaded power package ・ Multi-level cell ・ Multi-level governance ・ Multi-level marketing ・ Multi-level technique ・ Multi-licensing ・ Multi-Line Extension telephone Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Multi-jackbolt tensioner ： ウィキペディア英語版 Multi-jackbolt tensioner Multi-jackbolt tensioners (MJT) provide an alternative to traditional bolted joints Rather than needing to tighten one large bolt, MJTs use several smaller jackbolts to drastically reduce the torque required to attain a certain preload. MJTs range in thread sizes from 3/4” to 32” and can achieve up to 20 million pounds of force and greater. MJTs only require hand-held tools, such as torque wrenches or air/electric impacts, for loading and unloading bolted joints.〔Steinbock, Rolf. "The Multi-Jackbolt Tensioning System." ''Handbook of Bolts and Bolted Joints.'' Ed. John H. Bickford and Sayed Nassar. New York: Marcel Dekker, Inc., 1998. 507-533.〕 ==Basics of multi-jackbolt tensioners== Multi-jackbolt tensioners (MJTs), registered under the trademark Superbolt or Supernut, are designed to decrease the torque required to tighten large bolted joints. One of the major problems associated with traditional bolt tightening methods is as the diameter of the bolt increases, the amount of torque required to tighten it increases in the third power of the diameter.〔 Because of this, the largest size bolt a person can typically tighten by hand is 1".〔Steinbock, Rolf. "Mechanical Tensioners Tame High-temperature Joint Failures." ''Power Engineering.'' August 1997, p. 46-50.〕 Multi-jackbolt tensioners reduce the amount of torque required to clamp the joint by using multiple jackbolts threaded through the nut or bolt head.〔Kane, Joe. "Revisiting Superbolt's Super Torquenut: Since Our Last Visit, Many More Compressor Related Applications of the Torquenut Have Been Uncovered." ''Compressor Tech Two.'' September, 2004.〕 The jackbolts, which are small enough to be tightened by simple hand tools, thrust against a hardened washer and generate clamping force on the joint. Loads up to 20,000,000 pounds and greater are attainable using only hand tools. MJTs and related products are produced by Superbolt, Inc. in Carnegie, PA. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Multi-jackbolt tensioner」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.