{"id":14194,"date":"2024-11-01T09:01:20","date_gmt":"2024-11-01T09:01:20","guid":{"rendered":"https:\/\/hydraflu.com\/?p=14194"},"modified":"2026-05-23T06:21:21","modified_gmt":"2026-05-23T06:21:21","slug":"types-of-threads","status":"publish","type":"post","link":"https:\/\/hydraflu.com\/pt\/tipos-de-fios\/","title":{"rendered":"Tipos de roscas: um guia completo sobre perfis, padr\u00f5es e aplica\u00e7\u00f5es."},"content":{"rendered":"

\"verifique<\/p>\n

Have you ever found yourself wondering why a nut is not fitting into the bolt? What does\u00a0that spiral pattern on the\u00a0bolt mean? Threads are the unsung heroes of engineering, connecting, holding, and keeping the world moving around. It’s all about the components that hold everything from handheld drills to Wartsila Marine Engines. In this article guide, you will learn all about types of threads.<\/span><\/p>\n

Como identificar e classificar fios<\/span><\/h2>\n

Identifying and classifying threads is tricky because there are many profiles, pitches, and standards to consider. But here\u2019s a straightforward way to do it. You can start by examining the thread profile. The profiles are usually “V” shaped, square, or other designs that you can learn in the\u00a0coming section.\u00a0<\/span><\/p>\n

Depois disso, voc\u00ea pode determinar o sentido da rosca. A maioria das roscas \u00e9 direita, ou seja, aperta no sentido hor\u00e1rio, mas roscas esquerdas s\u00e3o usadas onde as roscas direitas podem afrouxar em certas condi\u00e7\u00f5es. Com esses detalhes em m\u00e3os, o pr\u00f3ximo passo \u00e9 verificar o passo, que \u00e9 a dist\u00e2ncia entre cada crista. Isso ajudar\u00e1 a diferenciar roscas do mesmo di\u00e2metro. Por fim, me\u00e7a o di\u00e2metro para verificar se a rosca \u00e9 interna ou externa. Com todas essas informa\u00e7\u00f5es, voc\u00ea pode classificar o tipo de rosca. Ela ser\u00e1 de entrada \u00fanica ou m\u00faltipla, e voc\u00ea poder\u00e1 identificar os padr\u00f5es que segue, como o sistema m\u00e9trico (ISO), o padr\u00e3o brit\u00e2nico (British Standard) ou outros.<\/span><\/p>\n

Vis\u00e3o geral dos tipos de rosca mais comuns<\/span><\/h2>\n

Conhecer os detalhes de cada tipo de rosca pode ajudar a tomar melhores decis\u00f5es em rela\u00e7\u00e3o a servi\u00e7os, instala\u00e7\u00f5es e engenharia. Isso garante funcionalidade e confiabilidade. A seguir, apresentamos os tipos de roscas utilizados na ind\u00fastria e na instala\u00e7\u00e3o de m\u00e1quinas hidr\u00e1ulicas.\u00a0<\/span><\/p>\n

<\/h2>\n

\"roscas<\/span><\/h2>\n

Rosca direita<\/span><\/h3>\n

As roscas direitas s\u00e3o o tipo mais comum usado em aplica\u00e7\u00f5es de fixa\u00e7\u00e3o e s\u00e3o projetadas para apertar no sentido hor\u00e1rio. Isso faz com que pare\u00e7am naturais para a maioria das pessoas. <\/span><\/p>\n

Rosca esquerda<\/span><\/h3>\n

Roscas esquerdas s\u00e3o usadas em situa\u00e7\u00f5es onde uma rosca direita poderia se soltar devido ao movimento ou \u00e0 carga. Essas roscas apertam no sentido anti-hor\u00e1rio, o oposto da maioria dos fixadores padr\u00e3o, tornando-as \u00fateis quando for\u00e7as rotacionais poderiam desaparafusar uma rosca direita.\u00a0<\/span><\/p>\n

S\u00e3o comuns em m\u00e1quinas rotativas ou pe\u00e7as que sofrem carga reversa, pois isso evita o afrouxamento acidental. Um exemplo simples \u00e9 o uso frequente em pedais de bicicleta para garantir que a rota\u00e7\u00e3o n\u00e3o afrouxe a rosca inadvertidamente.<\/span><\/p>\n

Tipos de rosca com base em perfis e formatos<\/span><\/h2>\n

Os perfis de rosca desempenham um papel significativo na determina\u00e7\u00e3o da resist\u00eancia e funcionalidade da rosca. Diferentes perfis servem a diferentes prop\u00f3sitos, e a sele\u00e7\u00e3o correta depende muito dos requisitos espec\u00edficos da aplica\u00e7\u00e3o. Escolher o perfil de rosca apropriado pode garantir que a rosca tenha um desempenho ideal, proporcionando resist\u00eancia, precis\u00e3o ou flexibilidade conforme necess\u00e1rio.<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tipo de rosca<\/b><\/td>\nPerfil do t\u00f3pico<\/b><\/td>\nDimens\u00f5es<\/b><\/td>\n<\/tr>\n
Rosca \u00e0 direita<\/span><\/td>\nSulco helicoidal<\/span><\/td>\nAperta no sentido hor\u00e1rio<\/span><\/td>\n<\/tr>\n
Rosca esquerda<\/span><\/td>\nSulco helicoidal<\/span><\/td>\nAperta no sentido anti-hor\u00e1rio<\/span><\/td>\n<\/tr>\n
Threads de inicializa\u00e7\u00e3o \u00fanica<\/span><\/td>\nh\u00e9lice simples<\/span><\/td>\nUm sulco por tom<\/span><\/td>\n<\/tr>\n
Threads de inicializa\u00e7\u00e3o m\u00faltipla<\/span><\/td>\nM\u00faltiplas h\u00e9lices<\/span><\/td>\nM\u00faltiplas ranhuras para movimentos mais r\u00e1pidos<\/span><\/td>\n<\/tr>\n
“V” Shape Threads<\/span><\/td>\nPerfil em V<\/span><\/td>\ntom padronizado<\/span><\/td>\n<\/tr>\n
Fios quadrados<\/span><\/td>\nPerfil quadrado<\/span><\/td>\nBaixo atrito, alta capacidade de carga<\/span><\/td>\n<\/tr>\n
Acme Threads<\/span><\/td>\nPerfil angulado<\/span><\/td>\nF\u00e1cil de fabricar, precis\u00e3o moderada<\/span><\/td>\n<\/tr>\n
Rosca de junta<\/span><\/td>\nPerfil arredondado<\/span><\/td>\nAdequado para desgaste.<\/span><\/td>\n<\/tr>\n
Roscas de contraforte<\/span><\/td>\nPerfil assim\u00e9trico<\/span><\/td>\nAlta for\u00e7a axial, unidirecional<\/span><\/td>\n<\/tr>\n
Roscas c\u00f4nicas<\/span><\/td>\nPerfil c\u00f4nico<\/span><\/td>\nVeda\u00e7\u00e3o \u00e0 prova de vazamentos, alta press\u00e3o<\/span><\/td>\n<\/tr>\n
Fios de minhoca<\/span><\/td>\nEstrutura helicoidal<\/span><\/td>\nConverte movimento rotacional em movimento linear.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\"tipos“V” shape threads<\/span><\/h3>\n

“V” shape threads are the most common type, known for their good strength and sealing properties. These threads are typically used for general fastening because they provide a reliable balance of strength and ease of manufacturing. The “V” profile helps maintain tightness under various conditions, which makes it a versatile choice.\u00a0<\/span><\/p>\n

You’ll see these threads everywhere, from small hydraulic machines to heavy-duty industrial bolts, because of their adaptability and reliable performance.<\/span><\/p>\n

Fios quadrados<\/span><\/h3>\n

As roscas quadradas s\u00e3o projetadas para transmiss\u00e3o de pot\u00eancia e s\u00e3o comumente usadas em fusos de esferas onde se exige baixo atrito. Seu formato permite um movimento eficiente com desgaste m\u00ednimo, o que as torna ideais para aplica\u00e7\u00f5es que envolvem cargas pesadas.\u00a0<\/span><\/p>\n

As faces planas da rosca quadrada ajudam a reduzir o deslizamento sob for\u00e7a, proporcionando desempenho confi\u00e1vel em m\u00e1quinas de precis\u00e3o. Essas roscas s\u00e3o frequentemente encontradas em sistemas como atuadores lineares, onde \u00e9 necess\u00e1ria uma for\u00e7a suave e consistente.<\/span><\/p>\n

Acme Threads<\/span><\/h3>\n

As roscas Acme s\u00e3o semelhantes \u00e0s roscas quadradas, mas possuem um perfil ligeiramente angulado que facilita sua fabrica\u00e7\u00e3o. Elas s\u00e3o frequentemente utilizadas em aplica\u00e7\u00f5es como tornos de bancada, macacos hidr\u00e1ulicos e outras ferramentas onde s\u00e3o necess\u00e1rias resist\u00eancia e movimento suave.\u00a0<\/span><\/p>\n

As laterais anguladas tornam as roscas Acme mais robustas sob carga em compara\u00e7\u00e3o com as roscas quadradas, mantendo o atrito relativamente baixo. Esse equil\u00edbrio de caracter\u00edsticas as torna uma escolha popular para sistemas mec\u00e2nicos que exigem precis\u00e3o e confiabilidade moderadas.<\/span><\/p>\n

Rosca de junta<\/span><\/h3>\n

As roscas de junta s\u00e3o caracterizadas por suas cristas e ra\u00edzes arredondadas, o que as torna adequadas para aplica\u00e7\u00f5es sujeitas a desgaste frequente. O perfil arredondado ajuda a distribuir a tens\u00e3o de maneira mais uniforme, reduzindo o risco de danos \u00e0 rosca ao longo do tempo. Essas roscas s\u00e3o frequentemente encontradas em aplica\u00e7\u00f5es de baixa exig\u00eancia, como engates ferrovi\u00e1rios, onde a durabilidade \u00e9 fundamental.\u00a0<\/span><\/p>\n

Roscas de contraforte<\/span><\/h3>\n

As roscas trapezoidais s\u00e3o utilizadas em aplica\u00e7\u00f5es onde a for\u00e7a \u00e9 aplicada principalmente em uma dire\u00e7\u00e3o. Elas proporcionam alta resist\u00eancia e excelente capacidade de carga. S\u00e3o particularmente \u00fateis em prensas hidr\u00e1ulicas e outros equipamentos hidr\u00e1ulicos onde altas for\u00e7as axiais s\u00e3o comuns.\u00a0<\/span><\/p>\n

O design assim\u00e9trico das roscas trapezoidais permite que elas suportem cargas significativas com efici\u00eancia, sem comprometer a integridade estrutural. Essas roscas s\u00e3o frequentemente escolhidas para m\u00e1quinas pesadas que exigem transfer\u00eancia de for\u00e7a unidirecional.<\/span><\/p>\n

Roscas c\u00f4nicas<\/span><\/h3>\n

As roscas c\u00f4nicas s\u00e3o projetadas para criar uma veda\u00e7\u00e3o herm\u00e9tica e \u00e0 prova de vazamentos, sendo comumente utilizadas em tubula\u00e7\u00f5es e sistemas hidr\u00e1ulicos. O perfil c\u00f4nico se encaixa na rosca correspondente \u00e0 medida que \u00e9 apertado, criando uma veda\u00e7\u00e3o robusta. Isso torna as roscas c\u00f4nicas ideais para aplica\u00e7\u00f5es de alta press\u00e3o, onde vazamentos devem ser evitados a todo custo. Elas s\u00e3o amplamente utilizadas em sistemas de g\u00e1s e fluidos.<\/span><\/p>\n

Fios de minhoca<\/span><\/h3>\n

As roscas sem-fim s\u00e3o normalmente encontradas em conjuntos de engrenagens e s\u00e3o usadas para converter movimento rotacional em movimento linear. Elas apresentam uma estrutura helicoidal que interage com uma roda sem-fim, proporcionando um controle preciso do movimento. Isso as torna ideais para mecanismos de eleva\u00e7\u00e3o hidr\u00e1ulica e sistemas de dire\u00e7\u00e3o automotiva, onde o movimento controlado \u00e9 crucial.\u00a0<\/span><\/p>\n

As roscas sem-fim s\u00e3o essenciais para sistemas que necessitam de redu\u00e7\u00e3o de velocidade e aumento de torque, proporcionando uma vantagem mec\u00e2nica significativa.<\/span><\/p>\n

Padr\u00f5es e Classifica\u00e7\u00f5es de Roscas<\/span><\/h2>\n

Compreender os padr\u00f5es de rosca \u00e9 crucial, especialmente no ambiente globalizado de hoje, onde projetos internacionais s\u00e3o comuns.\u00a0<\/span><\/p>\n

Tipos b\u00e1sicos de rosca e normas internacionais<\/h3>\n

a) Roscas de fixa\u00e7\u00e3o em geral<\/strong><\/h4>\n\n\n\n\n\n\n\n\n
Tipo de rosca<\/strong><\/td>\nPadr\u00e3o Internacional\/Regional<\/strong><\/td>\nAplica\u00e7\u00f5es t\u00edpicas<\/strong><\/td>\nPrincipais caracter\u00edsticas<\/strong><\/td>\n<\/tr>\n<\/thead>\n
UNC\/UNF<\/strong><\/td>\nASME B1.1 (EUA)<\/td>\nMaquinaria norte-americana, pe\u00e7as automotivas<\/td>\nRoscas grossas (UNC) e finas (UNF), ideais para ambientes com alta vibra\u00e7\u00e3o.<\/td>\n<\/tr>\n
Roscas m\u00e9tricas<\/strong><\/td>\nISO 68-1 (Global)<\/td>\nMaquinaria e eletr\u00f4nica europeias\/asi\u00e1ticas<\/td>\nRoscas m\u00e9tricas, medidas em mil\u00edmetros (ex.: M6, M12)<\/td>\n<\/tr>\n
BSPP\/BSPT<\/strong><\/a><\/td>\nISO 228-1 (Paralelo)\/ISO 7-1 (C\u00f4nico)<\/td>\nSistemas hidr\u00e1ulicos europeus, conex\u00f5es de tubula\u00e7\u00e3o<\/td>\nA rosca BSPP requer an\u00e9is de veda\u00e7\u00e3o, enquanto a rosca BSPT \u00e9 autovedante.<\/td>\n<\/tr>\n
NPT\/NPTF<\/strong><\/a><\/td>\nASME B1.20.1 (EUA)<\/td>\nTubula\u00e7\u00f5es e sistemas hidr\u00e1ulicos norte-americanos<\/td>\nRosca c\u00f4nica, NPTF (veda\u00e7\u00e3o a seco) oferece melhor resist\u00eancia a vazamentos.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

b) Roscas para Fins Espec\u00edficos<\/strong><\/h4>\n\n\n\n\n\n\n\n\n
Tipo de rosca<\/strong><\/td>\nPadr\u00e3o internacional<\/strong><\/td>\nCampos de inscri\u00e7\u00e3o<\/strong><\/td>\nCaracter\u00edsticas t\u00e9cnicas<\/strong><\/td>\n<\/tr>\n<\/thead>\n
Fios MJ<\/strong><\/td>\nISO 5855-2 (Aeroespacial)<\/td>\nFixadores aeroespaciais (parafusos, porcas)<\/td>\nDesign de raiz arredondada, alta resist\u00eancia \u00e0 fadiga, requer ferramentas especiais.<\/td>\n<\/tr>\n
ACME Trapezoidal<\/strong><\/td>\nASME B1.5 (EUA)<\/td>\nM\u00e1quinas pesadas (macacos, fusos de esferas)<\/td>\nPerfil trapezoidal, adequado para cargas elevadas e movimento bidirecional.<\/td>\n<\/tr>\n
UNJ Threads<\/strong><\/td>\nNAS 1591 (Aeroespacial, EUA)<\/td>\nEstruturas de aeronaves, componentes de alta tens\u00e3o<\/td>\nRaiz arredondada, maior resist\u00eancia a fissuras, em conformidade com o padr\u00e3o militar MIL-STD.<\/td>\n<\/tr>\n
T\u00f3picos PG<\/strong><\/td>\nDIN 40430 (Alemanha)<\/td>\nPrensa-cabos el\u00e9tricos<\/a><\/td>\nRoscas m\u00e9tricas para veda\u00e7\u00e3o \u00e0 prova d'\u00e1gua e poeira.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Compara\u00e7\u00e3o de padr\u00f5es de roscas para tubos e sistemas hidr\u00e1ulicos<\/h3>\n\n\n\n\n\n\n\n\n
Nome padr\u00e3o<\/strong><\/td>\nRegi\u00e3o<\/strong><\/td>\nTipo de rosca<\/strong><\/td>\nM\u00e9todo de veda\u00e7\u00e3o<\/strong><\/td>\nFaixa de press\u00e3o t\u00edpica<\/strong><\/td>\n<\/tr>\n<\/thead>\n
ISO 1179<\/strong><\/td>\nGlobal<\/td>\nBSPP (s\u00e9rie G)<\/td>\nRosca paralela + anel de veda\u00e7\u00e3o\/junta<\/td>\n\u226440 MPa<\/td>\n<\/tr>\n
SAE J514<\/strong><\/a><\/td>\nAm\u00e9rica do Norte<\/td>\nConicidade JIC 37\u00b0<\/td>\nVeda\u00e7\u00e3o c\u00f4nica metal-metal<\/td>\n\u226470 MPa<\/td>\n<\/tr>\n
DIN 2353<\/strong><\/td>\nEuropa<\/td>\nConicidade de 24\u00b0 (s\u00e9rie DKO)<\/td>\nVeda\u00e7\u00e3o de encaixe por compress\u00e3o<\/td>\n\u226463 MPa<\/td>\n<\/tr>\n
JIS B0203<\/strong><\/td>\nJap\u00e3o<\/td>\nPT (c\u00f4nico)<\/td>\nSemelhante ao BSPT, requer fita de veda\u00e7\u00e3o.<\/td>\n\u226430 MPa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Padr\u00f5es de rosca para equipamentos de constru\u00e7\u00e3o e seguran\u00e7a<\/h3>\n\n\n\n\n\n\n\n
Nome padr\u00e3o<\/strong><\/td>\nCen\u00e1rios de aplica\u00e7\u00e3o<\/strong><\/td>\nTipo de rosca<\/strong><\/td>\nRequisitos principais<\/strong><\/td>\n<\/tr>\n<\/thead>\n
EN 13564-1<\/strong><\/td>\nImpermeabiliza\u00e7\u00e3o de edif\u00edcios (v\u00e1lvulas de reten\u00e7\u00e3o)<\/td>\nBSPP\/S\u00e9rie G<\/td>\nMateriais resistentes \u00e0 corros\u00e3o, teste de press\u00e3o est\u00e1tica<\/td>\n<\/tr>\n
EN 362<\/strong><\/td>\nConectores de reten\u00e7\u00e3o de queda (equipamento de seguran\u00e7a)<\/td>\nDesign de port\u00e3o com fechamento autom\u00e1tico<\/td>\nResist\u00eancia est\u00e1tica \u226515 kN, resist\u00eancia \u00e0 n\u00e9voa salina<\/td>\n<\/tr>\n
ASME A120<\/strong><\/td>\nTubula\u00e7\u00e3o de prote\u00e7\u00e3o contra inc\u00eandio<\/td>\nNPT<\/td>\nRevestimento resistente ao fogo, testes de veda\u00e7\u00e3o de alta press\u00e3o<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Como escolher a linha certa para sua aplica\u00e7\u00e3o<\/span><\/h2>\n

Cada cen\u00e1rio indica um tipo diferente de linha, seu perfil e o material adequado, ajudando voc\u00ea a fazer uma escolha informada que garanta estabilidade e efic\u00e1cia.<\/span><\/p>\n

Conclus\u00e3o<\/span><\/h2>\n

Threads might be small, but their impact is colossal. Whether you’re an engineer, a technician, or someone who loves to tinker, understanding the different types of threads and their applications will give you a solid foundation for making informed choices\u2014and maybe even impress a colleague at the next design meeting. So next time you see a screw, look beyond the twisted piece of metal. See the thought, the design, and the potential held within that simple spiral.<\/span><\/p>\n

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

Have you ever found yourself wondering why a nut is not fitting into the bolt? What does\u00a0that spiral pattern on the\u00a0bolt mean? Threads are the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-14194","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"yoast_head":"\nTypes of Threads: A Comprehensive Guide<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hydraflu.com\/pt\/tipos-de-fios\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Types of Threads: A Comprehensive Guide\" \/>\n<meta property=\"og:description\" content=\"Have you ever found yourself wondering why a nut is not fitting into the bolt? What does\u00a0that spiral pattern on the\u00a0bolt mean? 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