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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">fwj</journal-id><journal-title-group><journal-title xml:lang="ru">Трение и и износ</journal-title><trans-title-group xml:lang="en"><trans-title>Title in english</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0000-0000</issn><issn pub-type="epub">0000-0000</issn><publisher><publisher-name>AGU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32864/0202-4977-2024-45-4-327-334</article-id><article-id custom-type="elpub" pub-id-type="custom">fwj-30</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Определение предельных функциональных зазоров подшипника скольжения в условиях гидродинамической смазки</article-title><trans-title-group xml:lang="en"><trans-title>Determination of the Maximum Functional Clearances of a Plain Bearing under Hydrodynamic Lubrication Conditions</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Леонов</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Leonov</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Тимирязевская, 49, г. Москва 127434</p></bio><bio xml:lang="en"><p>Timiryazevskaya str., 49, Moscow 127434</p></bio><email xlink:type="simple">metr@rgau-msha.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шкаруба</surname><given-names>Н. Ж.</given-names></name><name name-style="western" xml:lang="en"><surname>Shkaruba</surname><given-names>N. Zh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Тимирязевская, 49, г. Москва 127434</p></bio><bio xml:lang="en"><p>Timiryazevskaya str., 49, Moscow 127434</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вергазова</surname><given-names>Ю. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Vergazova</surname><given-names>Yu. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Тимирязевская, 49, г. Москва 127434</p></bio><bio xml:lang="en"><p>Timiryazevskaya str., 49, Moscow 127434</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Российский государственный аграрный университет МСХА имени К.А. Тимирязева»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian State Agrarian University Moscow Timiryazev Agricultural Academy</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>26</day><month>09</month><year>2026</year></pub-date><volume>45</volume><issue>4</issue><fpage>327</fpage><lpage>334</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; AGU, 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">AGU</copyright-holder><copyright-holder xml:lang="en">AGU</copyright-holder><license xlink:href="https://fwj.ejournal.by/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://fwj.ejournal.by/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://fwj.ejournal.by/jour/article/view/30">https://fwj.ejournal.by/jour/article/view/30</self-uri><abstract><p>В статье рассмотрены факторы, влияющие на работу подшипника скольжения. Показано, что на основании основных положений теории гидродинамической смазки, переходя от формулы, характеризующей несущую способность смазочного слоя подшипников скольжения, к параметрам толщины масляного слоя и зазора, можно получить выражения для определения функциональных зазоров, в диапазоне которых подшипник будет работать в условиях гидродинамического трения. В результате проведенных расчётов подшипника скольжения редуктора привода транспортёра определены предельные функциональные зазоры для условия использования втулок различной длины в соответствии с ГОСТ ИСО 4379–2006. Обоснована рациональная длина цапфы подшипника скольжения исходя из величины наибольшего функционального зазора и его влияния на отклонение межосевого расстояния в зубчатой передаче редуктора. Предложена новая посадка Н8/f7 взамен рекомендуемых стандартом ГОСТ ИСО 4379–2006 Н8/g7 и Н8/e7, что гарантировано обеспечит наличие гидродинамического клина в начале эксплуатации и наиболее рациональный запас материалов на износ. Практическая значимость исследований заключается в возможности применения предложенного подхода при проектировании подшипников скольжения, работающих в условиях гидродинамической смазки, с целью определения рациональной длины и посадки сопрягаемых элементов подшипникового узла.</p></abstract><trans-abstract xml:lang="en"><p>The article considers the factors influencing the operation of a sliding bearing. It is shown that on the basis of the basic provisions of the theory of hydrodynamic lubrication, passing from the formula, characterising the bearing capacity of the lubricating layer of sliding bearings, to the parameters of the oil layer thickness and clearance, it is possible to obtain expressions for determining the functional clearances, in the range of which the bearing will operate under conditions of hydrodynamic friction. As a result, of calculations of the plain bearings of the conveyor drive gearbox, the maximum functional clearances had determined for the conditions of using bushings of various lengths in accordance with GOST ISO 4379–2006. The rational length of the plain bearing bush was selected based on the magnitude of the largest functional clearance and its influence on the deviation of the center distance in the gear drive of the gearbox. A new fit H8/f7 has proposed instead of those recommended by the GOST ISO 4379–2006 standard, which has guaranteed to ensure the presence of a hydrodynamic wedge at the beginning of operation and the most rational supply of materials for wear. The practical significance of the research lies in the possibility of using the proposed approach when designing sliding bearings operating under hydrodynamic lubrication conditions in order to determine the rational length and fit of the mating elements of the bearing unit.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>подшипник скольжения</kwd><kwd>предельные функциональные зазоры</kwd><kwd>гидродинамическая смазка</kwd><kwd>допуск посадки</kwd><kwd>запас точности</kwd><kwd>длина цапфы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>plain bearing</kwd><kwd>maximum functional clearances</kwd><kwd>hydrodynamic lubrication</kwd><kwd>fit tolerance</kwd><kwd>accuracy margin</kwd><kwd>length plain bearing bush</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Захаров С.М. 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