[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-564613-105":53,"doc-detail-564613-en":126},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":119,"head_meta":121,"extra_data":123,"updated_unix":125},105,"en","optical-alignment-thermal-growth-machinery-movement-presented-for-the-vibration-institute-february-17-2007","Optical Alignment, Thermal Growth & Machinery Movement - Presented For The Vibration Institute - February 17 2007","","Optical Alignment, Thermal Growth & Machinery Movement presents how high-precision optical measurement improves hot shaft alignment when conventional cold alignment is insufficient. The material defines parallel, angular, and combined shaft misalignment, then explains alignment factors and tolerance criteria linking rotational speed, coupling span, and allowable deviation in horizontal and vertical directions. It compares cold alignment targets against thermal growth and static deflection, showing how OA enables accurate measurement and optimization of machinery alignment.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":11,"@type":70,"position":76},"https://docshare.wps.com/template/presentations/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/optical-alignment-thermal-growth-machinery-movement-presented-for-the-vibration-institute-february-17-2007/564613/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/optical-alignment-thermal-growth-machinery-movement-presented-for-the-vibration-institute-february-17-2007/564613.png","ImageObject",442,249,{"name":88,"@type":89},"Melati","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-20","2026-10-12",true,{"@type":98,"interactionType":99,"userInteractionCount":73},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"What types of (mis)alignment are discussed for two machine shafts?","Question",{"text":108,"@type":109},"The document describes parallel misalignment as rim offset between two shaft centerlines, angular misalignment as coupling face deviation from parallel, and their combined misalignment condition.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"How are alignment accuracy requirements evaluated?",{"text":113,"@type":109},"Alignment tolerance charts tie shaft speed, coupling span, and misalignment in horizontal and vertical directions to assess whether realignment is required.",{"name":115,"@type":106,"acceptedAnswer":116},"What problems does optical alignment help address in achieving hot (operating) alignment?",{"text":117,"@type":109},"It explains that cold shaft alignment targets can be invalidated by thermal growth and static deflection during operation, and OA is used to improve hot alignment accuracy.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},564613,1792471102,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":8,"category_name":11,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":73,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":135,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":141},962085570644,"https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","By Stanley R. Bognatz, P.E.  \nOptical Alignment, Thermal Growth & Machinery Movement 75 Laurel Street, Carbondale, PA 18407  \nPh. (570) 282-4947 email: [srb@mbesi.com](srb@mbesi.com)  \nOptical Alignment, Thermal Growth, & Machinery Movement  \nPresented For: The Vibration Institute, February 17th, 2007  \nBy:  \nStanley R. Bognatz, P.E. President  \nIntroduction  \nOur customers often seek help achieving precision alignment of their critical machinery when  standard alignment techniques do not provide satisfactory operation.  \nWhile helping them achieve the  simple goal of good hot alignment, we ve identified many mechanical issues using Optical Alignment ( OA ) that were not intuitive to those involved, and were not previously solved using vibration analysis or other techniques.  \nWe would like to share some OA background with you, and how we apply OA to optimize shaft alignment and eliminate machinery problems.  \n© 2007 M&B Engineered Solutions, Inc. Optical Alignment, Thermal Growth  \n& Machinery Movement  \n2007 M&B Engineered Solutions, Inc. 1  \nBy Stanley R. Bognatz, P.E.  \nOptical Alignment, Thermal Growth & Machinery Movement 75 Laurel Street, Carbondale, PA 18407  \nPh. (570) 282-4947 email: [srb@mbesi.com](srb@mbesi.com)  \nBasic Shaft Alignment  \nHow do we define the (mis)alignment of two machine shafts?  \nParallel misalignment: coupling rim offset between two shaft centerlines  \nAngular misalignment: coupling face deviation from parallel  \nCombined Misalignment  \nAngular (Face) Misalignment  \nParallel (Offset) Misalignment  \nCombined the usual field condition .  \n© 2007 M&B Engineered Solutions, Inc. Optical Alignment, Thermal Growth  \n& Machinery Movement  \nAlignment Factors  \nHow accurate do we need to be? What factors might you consider?  \n\n| More Critical: | Less Critical: |\n| --- | --- |\n| High speed (=> 1,800 rpm) | Low speed (\u003C 1,800 rpm) |\n| Rigid couplings | Geared Couplings |\n| Disc-pack couplings (for offset) | Flexible Couplings |\n| Short coupling spans | Long coupling spans |\n|  |  |\n\nWhat criteria do you have?  \n© 2007 M&B Engineered Solutions, Inc. Optical Alignment, Thermal Growth  \n& Machinery Movement  \n2007 M&B Engineered Solutions, Inc. 2  \nBy Stanley R. Bognatz, P.E.  \nOptical Alignment, Thermal Growth & Machinery Movement 75 Laurel Street, Carbondale, PA 18407  \nPh. (570) 282-4947 email: [srb@mbesi.com](srb@mbesi.com)  \nAlignment Criteria  \nThe Alignment Tolerance Chart ties speed, coupling span, and misalignment in the horizontal & vertical directions together to assess alignment accuracy.  \nShaft deviation is calculated for each side of the coupling (h & v) and plotted as a function of speed to determine if alignment is required.  \nWe can see that at 3,600 rpm, deviation much beyond 1 mil/inch should be realigned.  \n2.0  \n1.8  \n1.6  \n1.4  \n1.2  \n1.0  \n0.8  \n0.6  \n0.4  \n0.2  \nSHAFT DEVIATION ( MILS/ INCH)  \n© 2007 M&B Engineered Solutions, Inc. Optical Alignment, Thermal Growth  \n& Machinery Movement  \nAlignment Accuracy  \nSo, once again: How accurate does our alignment need to be?  \nTo muddy the water just a bit more:  \nWhat is the point in setting a cold shaft alignment within 0.002\" if adjacent bearing housings move 10 ~~ ~~ 20 mils (or more!) in different directions due to  \ncold alignment, with the shafts collinear, it is a sure bet  \nthermal growth and static deflection?  \nIf we set a  perfect  \nthat thermal growth and static deflection will ruin our alignment when the machine is operating.  \nThis is where Optical Alignment will provide significant improvement in our operating (hot) alignment accuracy.  \n© 2007 M&B Engineered Solutions, Inc. Optical Alignment, Thermal Growth  \n& Machinery Movement  \n2007 M&B Engineered Solutions, Inc. 3  \nBy Stanley R. Bognatz, P.E.  \nOptical Alignment, Thermal Growth & Machinery Movement 75 Laurel Street, Carbondale, PA 18407  \nPh. (570) 282-4947 email: [srb@mbesi.com](srb@mbesi.com)  \nWhat is Optical Alignment?  \n OA -The use of high-precision optical instrum","cbCaimpfvEtNlumf","https://ap.wps.com/l/cbCaimpfvEtNlumf","pdf",1251455,22,"English","# Introduction\n# Basic Shaft Alignment\n# Alignment Factors\n# Alignment Criteria\n# Alignment Accuracy\n# What is Optical Alignment?\n# Why Optics?\n# Optical Alignment Equipment","[{\"question\":\"What types of (mis)alignment are discussed for two machine shafts?\",\"answer\":\"The document describes parallel misalignment as rim offset between two shaft centerlines, angular misalignment as coupling face deviation from parallel, and their combined misalignment condition.\"},{\"question\":\"How are alignment accuracy requirements evaluated?\",\"answer\":\"Alignment tolerance charts tie shaft speed, coupling span, and misalignment in horizontal and vertical directions to assess whether realignment is required.\"},{\"question\":\"What problems does optical alignment help address in achieving hot (operating) alignment?\",\"answer\":\"It explains that cold shaft alignment targets can be invalidated by thermal growth and static deflection during operation, and OA is used to improve hot alignment accuracy.\"}]","Optical Alignment, Thermal Growth & Machinery Movement - Presented For The Vibration Institute - February 17 2007 | PDF",1791843204,8]